1
Q
A type of forest generally found in humid warm region characterized by considerable number of evergreen hardwood with many vines and lianas
a. mossy forest
b. tropical rain forest
c. dipterocarp forest
d. primary forest
A
dipterocarp forest
2
Q
The rate of storage of organic matter in plant tissues in excess of the respiratory utilization by plants during the period of measurements.
a. Primary productivity
b. Net productivity
c. Net primary productivity
d) Gross primary productivity
A
Net primary productivity
3
Q
The conversion of light energy to chemical energy occurring in plants.
a. Light reaction process
b. Glycolysis
c. Photophosphorylation
d. Photosynthesis
A
d. Photosynthesis
4
Q
The forest type with the most highly stratified and the greatest diversity of ecological niches.
a. Dipterocarp forest
b. Tropical forest
c. Mangrove
d. Mossy
e. All of these
A
b. Tropical forest
5
Q
An example of lime element.
a. N
b. K
c. Ca
d. All of these
A
c. Ca
6
Q
An environment which supports an animal or plant population and includes space, food, cover and the presence of other animal or plant species.
a. Niche
b. Habitat
c. Ecosystem
d. Fundamental niche
A
b. Habitat
7
Q
After the gravitational water has drained down, the soil is said to be at its:
a.Wilting capacity
b. Wilting coefficient
c. Field capacity
d. Moisture equilibrium
A
c. Field capacity
8
Q
It is the intimate association of a fungus with the plant roots.
a. Lichen
b. Mycelium
c. Mycorrhiza
d. Symbiosis
A
c. Mycorrhiza
9
Q
It refers to the outward appearance of a tree from the influence of its environment.
a. Genotypic
b. Phylogenetic
c. Phenotypic characters
d. B and C
A
c. Phenotypic characters
10
Q
A plant or community that occupies newly available or little differentiated sites is called:
a. Pioneer
b. Climax
c. Ecotone
d. Sapling
e. Succession
A
a. Pioneer
11
Q
An organism that synthesizes organic compounds from inorganic substances through photosynthesis or chemosynthesis.
a. Consumer
b. Producer
c. Decomposer
d. Predator
A
b. Producer
12
Q
The mass of plants that occupy a somewhat discontinuous space between definable lower and upper vertical
limits.
a. Tree layer
b. Overstorey
c. Forest layer
d. Canopy
A
d. Canopy
13
Q
The main agent of soil erosion.
a. Siltation
b. Sedimentation
c. Surface runoff
d. Streamflow
A
c. Surface runoff
14
Q
The prevention of crossing among populations due to growth on different sites.
a. Geographic isolation
b. Ecological isolation
c. Genetic isolation
d. Phenetic isolation
A
b. Ecological isolation
15
Q
If the soil has a pH value of 8, it is;
a. Acidic
b. Basic
c. Neutral
d. Semi acidic
A
b. Basic
16
Q
Any tree or plant which, by its presence, increase or decrease, denotes some particular changes in site, soil or use condition is;
a. Keystone species
b. Plant indicator
c. Plant index
d. Representative
A
b. Plant indicator
17
Q
The measure of physiological fitness of the organism with respect to one or all of the conditions of its environment is called;
a. Adaptation
b. Acclimation
c. Convergent evolution
d. Divergent evolution
A
a. Adaptation
18
Q
The movement of water through a differentially permeable membrane from an area where it is in high
concentration to an area where it is in low concentration.
a. Osmosis
b. Diffusion
c. Translocation
d. Transpiration
A
b. Diffusion
19
Q
An organism that transmits a pathogenic organism from one host to another.
a. Carrier
b. Virus
c. Pathogen
d. Vector
A
d. Vector
20
Q
The man-directed control of insect pests by employing the use of natural enemies.
a. Mechanical control
b. Cultural control
c. Biological control
d. Genetic control
A
c. Biological control
21
Q
An unwanted organism which competes with man for food and shelter or threatens their health, comfort or
welfare.
a. Insect
b. Weeds
c. Pest
d. Pathogens
A
c. Pest
22
Q
A control method whereby synthetic toxic substances or bioactive plant products are used to combat pest population.
a. Mechanical control
b. Cultural control
c. Biological control
d. Chemical control
A
d. Chemical control
23
Q
In the study of an ecosystem, the different component organisms will be considered. However, not all organisms can be studied at the same time. If only one species will be taken into account, the study is called?
a. Ecology
b. Synecology
c. Autecology
d. Ecological system
A
c. Autecology
24
Q
The group of individuals of the same genetic characteristics and are potentially interbreeding with one another.
a. Population
b. Ecosystem
c. Biosystem
d. Species
A
d. Species
25
The amount of solar radiation needed for the elongation of shoots and induction of flowering response.
a. 0.36-0.76 micron
b. 0.72-1.0 micron
c. 1.0-3.0 micron
d. None of these
a. 0.36-0.76 micron
26
The peak photosynthesis takes place at this range of solar radiation.
a. 0.72-1.0 micron
b. 0.4-0.51 micron
c. 0.76-0.85 micron
d. All of these
b. 0.4-0.51 micron
27
The following are factors that affect the amount of light reaching the earth’s surface except for:
a. Ozone
b. Vegetation
c. Slope
d. Albedo
a. Ozone
28
It is the orientation of the slope which receives the optimum amount of solar radiation.
a. N-E facing slope
b. S-E facing slope
c. S-W facing slope
d. E-W facing slope
a. N-E facing slope
29
The ecosystem is otherwise known as;
a. Biocoenosis
b. Biogeocoenosis
c. Community
d. Population
b. Biogeocoenosis
30
The passage of energy in one direction through an ecosystem.
a. Energy flow
b. Food chain
c. Food web
d. Cycle
a. Energy flow
31
A measure of disorder, randomness in energy.
a. Waste
b. Heat
c. Albedo
d. Entrophy
d. Entrophy
32
Consumers that consume the organic matter originating from plant and animal remains.
a. Detritivore
b. Omnivore
c. Carnivore
d. Herbivore
a. Detritivore
33
The basic building block of the large organic molecules necessary for life.
a. Nitrogen
b. Phosphorus
c. Carbon
d. Oxygen
c. Carbon
34
The maximum reproductive rate of an organism.
a. Biotic potential
b. Natality
c. Fertility
d. Survival
a. Biotic potential
35
The factors that tend to reduce population growth rate.
a. Climate
b. Weather
c. Environmental resistance
d. Mortality
d. Mortality
36
The study of energy and its transformation.
a. Kinetic
b. Thermodynamics
c. Potential
d. Motion
b. Thermodynamics
37
Consumers that eat a variety of plant and animal organisms.
a. Omnivore
b. Carnivore
c. Herbivore
d. Detritivore
a. Omnivore
38
Population 1 is generally larger than Population 2; population 1 benefits while population 2 is fatally affected.
a. Amensalism
b. Commensalism
c. Parasitism
d. Predation
d. Predation
39
Population 1 is generally smaller than Population 2; population 1 benefits while population 2 is harmed.
a. Amensalism
b. Commensalism
c. Parasitism
d. Predation
c. Parasitism
40
The production of new individuals by birth, hatching or cloning.
a. Natality
b. Fecundity
c. Fertility
d. Mortality
a. Natality
41
The movement of a member out of a population.
a. Migration
b. Emigration
c. Immigration
d. None of these
b. Emigration
42
The role performed by organism in a community.
a. Habit
b. Habitat
c. Niche
d. Succession
c. Niche
43
The first organisms that occupy an area after a natural catastrophe.
a. Colonizers
b. Invaders
c. Gaps
d. Lichens and mosses
d. Lichens and mosses
44
An association that exists between fungi and the roots of plants.
a. Parasitism
b. Commensalism
c. Mutualism
d. Amensalism
c. Mutualism
45
The most diverse type of ecosystem.
a. Temperate forest
b. Tropical rain forest
c. Boreal forest
d. Savanna
b. Tropical rain forest
46
A reservoir of phosphorus in the soil.
a. Sediments
b. Fertilizers
c. soil
d. Phosphate rocks
d. Phosphate rocks
47
An organism that lives on dead organic or inorganic matter.
a. Parasite
b. Saprophyte
c. Epiphyte
d. Depophyte
b. Saprophyte
48
The physical change of state in which a gas or vapor is transformed into a liquid as in the formation of water droplets when water vapor cools.
a. Evaporation
b. Volatilization
c. Condensation
d. Precipitation
c. Condensation
49
The loss of water vapor from the plants through the stomates.
a. Evaporation
b. Transpiration
c. Absorption
d. Evapotranspiration
b. Transpiration
50
A species whose role is essential for the survival of many other species in an ecosystem.
a. Pioneer
b. Native
c. Keystone
d. Dominant
c. Keystone
51
An adaptation in which toxic substances secreted by roots or shed leaves inhibit the establishment of competing plants nearby.
a. Toxication
b. Allelopathy
c. Commensalism
d. Juxtaposition
b. Allelopathy
52
The birth rate or the production of new individuals in a population in relation to time.
a. Abnormality
b. Mortality
c. Dispersal
d. Natality
d. Natality
53
Insects feeding on other insects.
a. Zoophagous
b. Phytophagous
c. Entomophagous
d. Detritophagous
c. Entomophagous
54
Capturing food while flying.
a. Feeding
b. Grazing
c. Hawking
d. Preying
c. Hawking
55
The ability of tree to survive, grow and develop under the shade.
a. Shade affinity
b. Shade adaptation
c. Shade resistance
d. Shade tolerance
d. Shade tolerance
56
The most important physical factor influencing plant succession process.
a. Herbicidal treatment
b. Shifting cultivation
c. Fire
d. Scarification
c. Fire
57
The formation of species during geographical isolation is called;
a. Allopatric speciation
b. genetic drift
c. sympatric speciation
d. hybridization
a. Allopatric speciation
58
The first basic principle of ecology is expressed in which of the following terms?
a. homeostasis
b. interrelatedness
c. stability
d. ecological balance
b. interrelatedness
59
It pertains to the running body of water;
a. lotic
b. lentic
c. marine
d. benthic
a. lotic
60
An open system comprising of organisms and non-living materials involving together in the flow of energy and circulation of matter;
a. ecology
b. ecosystem
c. ecotone
d. a and c
b. ecosystem
61
The variability and variety among living organisms and ecological complexes in which they occur. It has three levels, genetic, species and ecosystem/habitat diversity;
a. plant diversity
b. biological diversity
c. biodiversity
d. b and c
d. b and c
62
It is the ability of an individual to reproduce and multiply in an optimum condition;
a. fecundity
b. fertility
c. biotic potential
d. carrying capacity
c. biotic potential
63
A community of trees possessing sufficient uniformity of composition, constitution, age, spatial arrangement or condition to be distinguishable from adjacent communities;
a. block
b. site
c. forest
d. stand
d. stand
64
The study of change in the distribution and abundance of the population through space or time;
a. demography
b. population dynamics
c. population analysis
d. population statistics and survey
b. population dynamics
65
It is the basic functional unit where the living communities and non-living components interact for the maintenance of life;
a. biosphere
b. ecological unit
c. ecosystem
d. ecotone index
c. ecosystem
66
Biggest and most complex among the ecosystems;
a. biodiversity
b. agriculture
c. ecology
d. forest
d. forest
67
The dry weight of all organic matter in a given ecosystem;
a. canopy
b. humus
c. litter
d. biomass
d. biomass
68
The boundary between two ecosystems is called;
a. ecotone
b. site boundary
c. site index
d. site location
a. ecotone
69
It is an orderly process of community development that involves changes in species structure;
a. population change
b. ecological succession
c. pioneer stages
d. development stage
b. ecological succession
70
The gap in the forest produced by the fall of a tree;
a. biotpe
b. space
c. chablis
d. ecortone
c. chablis
71
In the tropics, the bulk of nutrients are found in;
a. ecosystem
b. atmosphere
c. biomass
d. soil
c. biomass
72
All the plants and animals within an are or region is called;
a. biome
b biotic potential
c. biota
d. birth rate
c. biota
73
This is an atmospheric phenomenon where uncontrollable amount of electric charges are released/deposited in
the earth.
a. lightning
b. relative humidity
c. precipitation
d. atmospheric constituents
a. lightning
74
The effects of forests on the different components of the environment are referred to as;
a. Forest attributes
b. Forest influences
c. Forest Productivity
d. All of these
b. Forest influences
75
Solar radiation is composed of waves of various wavelengths. What is the percentage of solar radiation for; (write the letters opposite the item)
i. Visible spectrum - b
ii. Far red - d
iii. Ultraviolet rays - a
a. 4%
b. 44%
c. 54%
d. 52%
a. 4%
76
Expression of the amount of water present in the air relative to the amount of water that the air can hold at saturated conditions.
a. absolute humidity
b. absolute moisture
c. moisture content
d. relative humidity
d. relative humidity
77
The amount of light energy falling on a unit surface area per unit of time is referred to as;
a. light spectrum
b. energy spectrum
c. light quality
d. light intensity
d. light intensity
78
This is a flat area with high elevation.
a. valley
b. ridge
c. gully
d. plateau
d. plateau
79
Erosion by water that produces very small and numerous channels is called;
a. rill erosion
b. gully erosion
c. sheet erosion
d. avalanche
a. rill erosion
80
The fixation of atmospheric carbon dioxide in a carbon sink through biological or physical processes, such as photosynthesis.
a. carbonization
b. carbon storage
c. sinking
d. sequestration
d. sequestration
81
It refers to the daily variations in atmospheric condition.
a. climate
b. runoff
c. weather
d. rainfall
c. weather
82
After a heavy rain, the water in the soil that drains due to gravity is called gravitational water or otherwise known as;
a. available water
b. free water
c. bound moisture
d. hygroscopic water
b. free water
83
The most important influence of the forest resource ecosystem on the environment is;
a. aesthetic values
b. production value
c. enhancement of climate
d. watershed value
c. enhancement of climate
84
It lessens the amount of water that reaches the ground.
a. canopy interception
b. throughfall
c. overland flow
d. stemflow
a. canopy interception
85
The tropical rainforest functions as;
a. productive
b. regenerative
c. protective
d. all of these
d. all of these
86
The collective term for the crown of the tree.
a. canopy
b. crown
c. head
d. none of these
a. canopy
87
What causes the general warming of the atmosphere?
a. Solar radiation
b. Hydrologic cycle
c. Wind movement
d. Earth’s rotation
a. Solar radiation
88
It is a primary input to the water balance equation.
a. rainfall
b. discharge
c. runoff
d. soil moisture
a. rainfall
89
It causes the decrease of water quantity stored in the vegetation.
a. interception
b. transpiration
c. infiltration
d. percolation
b. transpiration
90
The upper portion of the earth’s crust that is biochemically weathered plus other unconsolidated materials below it are part of the;
a. solum
b. soil
c. parent material
d. regolith
c. parent material
91
It pertains to the features of the actual surface of the earth considered collectively as to form
a. contour
b. aspect
c. slope
d. topography
d. topography
92
Term referring to unintercepted rainfall in a watershed.
a. fallout
b. drip
c. throughfall
d. runoff
c. throughfall
93
A geographic gradient in plants;
a. aspect
b. slope
c. cline
d. partite
c. cline
94
What refers to as the distinctive use of natural enemies in the control of pest infestation?
A. Herbicide
B. Insecticide
C. Biological control
D. Predator control
C. Biological control
95
What is referred to as the systematic examination, description, classification and mapping of soil in a given area geo encoding of such Information?
A. Soil survey
B. soil inventory
C. soil characterization
D. Soil classification
A. Soil survey
96
Which of the following are common characteristics and/or activities in seed production areas?
I. All are natural and artificial stands of proven genetic quality
II. All undergo progeny testing
III. All undergo rouging
A. I & II
B. I, II & III
C. I & III
D. II & III
B. I, II & III
97
The ________ of the soil refers to the sizes of particles that predominate while ________ refers to the arrangement of soil particles into aggregates.
A. Texture-horizons
B. Structure-horizons
C. Structure-texture
D. Texture- structure
D. Texture- structure
98
An animal or organism which is active at dawn is classified as
A. Endothermic
B. Nocturnal
C. Crepuscular
D. Diurnal
C. Crepuscular
99
The ability of tree to survive, grow and develop under the shade is
A. shade resistance
B. shade affinity
C. shade adaption
D. shade tolerance
D. shade tolerance
100
These are materials that have been deposited by water.
A. Residual materials
B. Alluvium
C. Colluviums
D. Aeolian deposit
B. Alluvium
101
The selection of desirable clones from the mixed population and vegetatively propagated crops.
A. Pure-line selection
B. Inbred selection
C. mass selection
D. clonal selection
D. clonal selection
102
Biologists have found that there is a direct relationship between the area of natural habitat and the number of species it can sustain. Reducing habitat size increases the risk of species extinctions.
A. All statements are true
B. Statement 1 is false; Statement 2 is true
C. All are false
D. Statement 1 is true; Statement 2 is false
A. All statements are true
103
_________ is a method of rooting cutting which involves oxygen cycling in water where cutting is placed and adding nutrients in the water
A. Hydroponics
B. Aeroponics
C. Misting
D. Bubble bath
A. Hydroponics
104
Which of the following fields in Forestry that deals with the management of forest community including soil, water, and climate.
a. forest utilization engineering
b. forest ecosystem management
c. forest resources management
d. forest governance and social forestry
b. forest ecosystem management
105
_______ is the movement of chemical elements and inorganic compounds that are essential to life
A. Sulphur cycle
B. Phosphorous cycle
C. Nitrogen cycle
D. Nutrient cycling
D. Nutrient cycling
106
Translocation is dependent on environment factor such as light, temperature and water. It involves the movement of various materials within a plant.
A. Statement 1 is true: statement 2 is false
B. Both statements are false
C. Both statements are true
D. Statement 1 is false; statement 2 is true
C. Both statements are true
107
________ is the place where organism live while _______ are large, recognized community units resulting from interactions between regional climates and regional biota.
A. Ecosystem-environment
B. Environment-ecosystem
C. Biomes-habitats
D. Habitat-biomes
D. Habitat-biomes
108
What is that field of study that deals NOT only with forest community but also soil, water, and climate.
A. Pathology
B. Dendrology
C. Forest ecosystem
D. Forest soil
C. Forest ecosystem
109
This refers to the use of natural enemies to control pest infestation.
A. Predator control
B. Herbicide
C. Biological control
D. Insecticide
C. Biological control
110
Decomposing organic matters that is at a stage where its constituents are already undistinguishable is referred to as
A. litter
B. humus
C. A-horizon
D. duff
B. humus
111
The biological process that includes the capture of light energy and its transformation into chemical energy of organic molecules, which are manufactured from carbon dioxide and water.
A. Photosynthesis
B. Carbon assimilation
C. Respiration
D. Transpiration
A. Photosynthesis
112
The basic unit of organic entity-environment interaction resulting from the complex interplay of living and non-living elements of the temporal and spatial dimension is
known as
A. Biodiversity
B. Ecosystem
C. Carbon cycle
D. Nitrogen cycle
B. Ecosystem
113
The size of grain of soils is referred to as
A. pH
B. bulk density
C. structure
D. texture
D. texture
114
An epiphyte and a tree where it grows is an example of what ecological relationship?
A. commensalism
B. mutualism
C. neutralism
D. ammensalism
A. commensalism
115
________ is a method of vegetative propagation where the stems are placed on top of the ground and covered with soil until roots are produced at the nodes.
A. Grafting
B. Marcotting
C. Layering
D. Seeding
C. Layering
116
When one organism interacts with the other, one is benefited and the other is not affected, this interaction is known as
A. Amensalism
B. commensalism
C. protocooperation
D. Parasitism
B. commensalism
117
The soil that is moved by gravity is called
A. colluvium
B. moraine
C. alluvial
D. loess
E. aeolian
A. Colluvium
118
These are wealthy characteristic of pioneer species except
A. Healthy leaves
B. Fast growing
C. Low biotic potential
D. Early flowering
C. Low biotic potential
119
An organism which is the result of a cross between two varieties, species, genera is called a
A. Hybrid
B. Sub-species
C. Variety
D. Cultivar
A. Hybrid
120
These are the pores in plant leaves and stalks that regulate gas exchange and transpiration.
A. lenticels
B. stomata
C. guard cells
D. aperture
B. stomata
121
What is the uppermost slightly decayed layer of organic matter on the forest floor and is a valuable source of humus?
A. Organic matter
B. Forest litter
C. Decomposed leaves
D. Macronutrients
B. Forest litter
122
The method of reducing water evaporation from the soil by spreading on the soil a layer of material such as straw, dead leaves and paper is known as
A. Mulching
B. Girdling
C. Layering or air layering
D. Hardening off
A. Mulching
123
It is the study of effect of climate on the health of living things
A. Bioclimatology
B. livoclimatology
C. Endoclimatology
D. sexoclimatology
A. Bioclimatology
124
Which of the following is responsible for the elongation of the plant part such as the main stem, branches, and roots?
A. cambial growth
B. primary growth
C. tertiary growth
D. secondary growth
B. primary growth
125
It is a term used to indicate the productive capacity of a site for given species or group of species.
A. Site factor
B. Site quality
C. Site index
D. Site indicator
B. Site quality
126
A vegetative strip of land that provides an additional protective layer to the forest is called
A. Firebreak
B. Greenbelt
C. Buffer zone
D. Fire lines
C. Buffer zone
127
Plants which flower only once and live only for one growing season is called
A. zygomorphic
B. monocarpic
C. caulocarpic
D. polycarpic
B. monocarpic
128
________ are plants, animals or microorganisms that are confined to a particular boundary, while _________ are restricted to a certain geographic area.
A. Endemic- rare species
B. Endemic-uncommon species
C. Rare- uncommon species
D. Uncommon species- Rare
A. Endemic- rare species
129
Which of the following characterize (s) an autotroph substance?
I. An organism that synthesizes its own food from inorganic substances
II. Its secretion has an inhibitory effect on other organisms.
A. II only
B. I only
C. I and II
D. Neither I nor II
C. I and II
130
Bagras is a large tree with leaves which are opposite or nearly opposite in young trees and alternate in mature trees. The fruit is small and contain numerous minute seeds.
A. Both statements are true
B. The first statement is false, the second is true
C. Both statements are false
D. The first statement is true, the second is false
B. The first statement is false, the second is true
131
Tropical soils are highly susceptible to physical degradation if they are exposed to the sun. The higher the rainfall, the more susceptible the soil to leaching. Evaluate the statements.
A. Statement 1 is true Statement 2 is false
B. Both statements are true
C. Both statements are false
D. Statement is false. statement 2 is true
B. Both statements are true
132
It is an experiment in which rooted cuttings or grafted trees are planted according to replicated design and measured consistent with the experimental plan.
A. selection test
B. clonal test
C. provenance test
D. hybrid test
B. clonal test
133
What single celled plants without definite cell wall and nucleus, can reproduce by binary fission?
A. Bacteria
B. Algae
C. Fungi
D. Nematodes
A. Bacteria
134
The science of classification and nomenclature of plants and the art and science of studying the external form and structure trees are
A. Plant systematics and Tree Morphology
B. Dendrology and Morphology
C. Systematics and Tree morphology
D. Plant taxonomy and Tree Morphology
D. Plant taxonomy and Tree Morphology
135
An insect that interferes with the growth and development of plants.
A. Parasite
B. Predator
C. Prey
D. Pest
D. Pest
136
Anemophilous is wind-pollinated, while malacaphilous is pollinated by:
A. bird
B. water
C. snail
D. Bat
C. snail
137
What kind of fruit narra has?
A. Schizocarp
B. Caryopsis - grass
C. Follicle
D. Samara
D. Samara
138
________ is the splitting of water to provides hydrogen ion and gaseous oxygen.
A. Electrolysis
B. Hydrolysis
C. Photosynthesis
D. Photolysis
A. Electrolysis
139
It is known as the Queen of the Philippine Orchids.
A. Jade vine
B. Pakpak lawin
C. Rafflesia
D. Waling-waling
D. Waling-waling
140
A forester informed you that your pine plantation lacks magnesium. What is his indicator?
A. Cones did not develop
B. Needles turn yellowish from the tips
C. Needles look dry
D. Absence of fox-tails
B. Needles turn yellowish from the tips
141
_________ is the unit of vegetation which includes NOT only the plants of which It is composed but the animals habitually associated with them and also all the physical and chemical components of the immediate environment or habitat.
A. Bioregion
B. Ecosystem
C. Ecological zone
D. Forest
B. Ecosystem
142
It has tiny pipelines that carry water with a small amount of dissolved minerals from the roots to the leaves of trees.
A. Phloem
B. Xylem
C. Cambium
D. Cork layer
B. Xylem
143
A representative family of mangrove forest is
A. Pinaceae
B. Podocarpacea
C. Cruciferea
D. Rhizophoraceas
Rhizophoraceas
144
The measure of the ability of a substance in the soil to transfer heat is referred to as
A. Thermal conductivity
B. Soil conductivity
C. Specific heat conductivity
D. Heat conductivity
Thermal conductivity
145
___________ refers to ferns and club mosses.
A. Spermatophytes
B. Pteridophytes
C. Hydrophytes
D. Saprophytes
B. Pteridophytes
146
The young leaves of Himbabao are cooked and eaten as vegetable. What is its scientific name?
A. Embella philippinesis
B. Alleanthus luzonicus
C. Embellia luzonicus
D. Alleanthus mindanensis
B. Alleanthus luzonicus
147
This is a soil layer approximately parallel to the land surface.
A. Regolith
B. Soil monolith
C. Soil profile
D. Soil horizon
D. Soil horizon
148
For a soil to be classified as clay, it should have at least ___ of clay particles by weight.
A. 10%
B. 40%
C. 20%
D. 50%
B. 40%
149
A red soil is generally
A. alkaline
B. fertile
C. acidic
D. neutral
C. acidic
150
Which of the following is a characteristic of El Niño?
A. Brings heavy downpour
B. Triggers soil erosion
C. Brings about droughts and extreme dryness
D. Brings massive flooding
C. Brings about droughts and extreme dryness
151
Which of the following is not a factor of shapes variation?
A. Mutation
B. Pollen dispersal
C. Clonal forestry
D. Selection
C. Clonal forestry
152
It is a chemical emitted by an organism that induces a behavioral or physiological response in another organism of the same species.
A. Growth regulator
B. Rairomone
C. hormone
D. pheromone
D. pheromone
153
It is a type of disease control that makes use of two or more natural control strategies.
A. Regulatory control
B. Biological control
C. Cultural control
D. Physical control
C. Cultural control
154
What is a type of disease symptom where there is stimulation of growth?
A. Hypertrophic
B. Holotrophic
C. Atrophic
D. Necrosis
A. Hypertrophic
155
Coconut is a
A. drupe
B. pepo
C. berry
D. pome
A. drupe
156
The carbonized remains of a compressed carboniferous forest is known
A. coal / charcoal
B. pigments
C. chalk
D. ceag
A. coal / charcoal
157
It is referred to as the size of proportional amount of individual soil particles.
A. Soil texture
B. Soil structure
C. Soil separates
D. Soil consistency
A. Soil texture
158
It refers to the study of the form and structure of organism.
A. Taxonomy
B. Morphology
C. Physiognomy
D. Physiology
B. Morphology
159
What kind of water forms a very thin film around the soil particles and is held so t ightly by the soil that it cannot be taken up by the plant roots?
A. Stem flow
B. Capillary water
C. Hygroscopic water
D. Runoff water
C. Hygroscopic water
160
A silvicultural treatment which involves the removal of twigs and branches to enhance the growth and quality of the final crops in a tree plantation is referred to as
A. Sanitation cutting
B. Weeding
C. Thinning
D. Pruning
D. Pruning
161
Which of the following characterizes an ecosystem?
I. Place which can be recognized within their general surroundings.
II. place defined as territory of one animal species - (not several animal species)
III. place defined by the predominance of one plant species
A. I, II & III
B. II & III
C. I & III
D. I&I
A. I, II & III
162
________ is NOT an example of drupe fruit.
A. Caimito
B. pili
C. coconut
D. talisai
A. Caimito
163
________ is having or approaching the appearance or habit of a shrub
A. arborescent
B. caudex
C. florescence
D. frutescent
D. frutescent
164
What refers to as pre-emergence damping off?
A. Micro fungi infest leaves only
B. Infection occurs when seed germinates
C. Infection of seed embryos prevents radicle emergence
D. Micro fungi infest stem and root system
C. Infection of seed embryos prevents radicle emergence
165
Once the trees are harvested, new trees can grow in their place and continue to sequester carbon. The rate of carbon sequestration depends on the management practice adopted, the tree species planted and the geographic area covered.
A. Both statements are true
B. Statement 1 is is false: statement 2 1s true
C. Statement 1 is true; statement 2 is false
D. Both statements are false
A. Both statements are true
166
Another appropriate name for multiple use is
A. dominant use
B. land use
C. single use
D. harmonized use
D. harmonized use
167
Having the pollen-producing and the ovule-producing organs on the same individual is referred to as
A. monoecious
B. complete flower
C. perfect flower
D. dioecious
A. monoecious
168
The seral stage of succession wherein migrules, propagules, and reproductive structures start to germinate is known as
A. Ecesis
B. competitive
C. ecdysis
D. Invasion
A. Ecesis
169
Timber is a primary product in multiple use forestry. Secondary productions does NOT include
A. vines
B. rattan
C. bamboo
D. durian
D. durian
170
What differentiates a CORYMB from a cyme as form of inflorescence?
A. Inner flower opens last
B. Flowers start from same levels
C. Arranged like ribs of umbrella
D. Inner flower opens first
A. Inner flower opens last
171
Covering the bed surface with a layer of organic materials reduces evaporation of soil moisture and shield the soil surface from the sun. This nursery practice is called
A. Shading
B. Mulching
C. Scudding
D. Screening
B. Mulching
172
Carbon enters the atmosphere through respiration and combustion. Decomposition by soil organisms is at the center of the transformation and cycling of nutrients through the environment
A. Both statements are true
B. Both statements are false
C. The first statement is true, 2nd is false
D. The first statement is false, 2nd is true
A. Both statements are true
173
The enrichment of a water body with nutrients resulting in excessive growth of phytoplankton, algae or vascular plants leading depletion of oxygen is called
A. water pollution
B. siltation
C. red tide
D. eutrophication
D. eutrophication
174
What environment factor triggers the influx of potassium ions into the guard cells that causes opening of stomata?
a. water
b. wind
c. light
d. temperature
c. light
175
What forest product is used in the production of high-quality varnish, paint, plastic and adhesive?
A. Tiaong
B. Mahogany
C. Copal and dammar
D. Tanguile
C. Copal and dammar
176
Glycolysis is the first phase in the process of
A. Transpiration
B. Assimilation
C. Absorption
D. Respiration
D. Respiration
177
It is the primary input to the water balance equation
a. pressure
b. heat
c. rainfall
d. soil moisture
c. rainfall
178
This class has flowers which develop into fruits that completely surround the seed.
A. Angiosperm
B. Gymnosperm
C. Monocots
D. Dicots
A. Angiosperm
179
Which of the following generally abound in freshwater/swamp forest?
A. Snakes and frogs
B. Owls, doves and pigeons
C. Fruits oats and mice
D. Herons, ducks, flycatchers
D. Herons, ducks, flycatchers
180
_________ is an area within a biome which has a characteristic ecosystem.
A. Ecological area
B. Ecozone
C. Eco-tourism area
D. Ecotone
B. Ecozone
181
Which statements refer to forest tree improvement?
I. It involves the continuation of parentage and silviculture
II. Its purpose is to improve the overall yield of product
III. It improves the quality of the products
A. I, II and III
B. II and III
C. I and II
D. I and Ill
A. I, II and III
182
If the young of a cockroach is a nymph, what is the young of butterfly?
A. Anarus
B. nymph
C. caterpillar
D. pupa
C. caterpillar
183
Seed source is also known as
A. Germplasm
B. Provenance
C. Symbiosis
D. Genebank
B. Provenance
184
What is the intermediate cutting which involves the removal of trees to enhance
the growth of the final crops.
A. Thinning
B. Weeding
C. Sanitation cutting
D. Pruning
A. Thinning
185
Which of the following are characteristics of a clayey soil.
I. Excellent water holding capacity
II. Excellent mineral holding capacity
III. Difficult to work
A. I and III
B. I, II and III
C. I and II
D. II and III
B. I, II and III
186
This refers to a heritage physical or behavioral trait that serves specific function and improves the organism fitness to adjust.
A. Evolution
B. Survival of the fittest
C. Natural selection
D. Adaptation
D. Adaptation
187
Which of the following statements does NOT comply with the International Code of Botanic Nomenclature?
A. The generic and specific combinations should be succeeded by the names of the authors.
B. A plant could have but one valid scientific name.
C. The name should be the last usable one (should be first)
D. Two different species or two different genera could not bear the same name.
C. The name should be the last usable one (should be first)
Mocks
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