The protoplasm of a single cell is known as:
A. protoplast
B. chromoplast
C. chloroplast
D. hydroplast
A. protoplast
What type of soil has less than 15% silt and clay, light in texture and can hold less water and minerals but more air?
A. loam soil
B. sandy soil
C. clay soil
D. sandy loam
B. sandy soil
Reduction of growth or stunting is a sign of nutrient deficiency. Severe stunting is principally caused by lack of potassium and iron.
A. All statements are false
B. Statement 1 is true; statement 2 is false
C. Statement 1 is false; statement 2 is true
D. All statements are true
B. Statement 1 is true; statement 2 is false
A simple, dry dehiscent fruit from a compound pistil is:
A. tuber
B. capsule
C. pod
D. berry
B. capsule
Its presence in the cell results in the stiff and sturdy framework and lack of motility of plants.
A. cellophane
B. cell wall
C. chlorophyll
D. chloroplast
B. cell wall
Which are leaf feeding beetles?
I. Pachyrrhynchus sp.
II. Metacyrphus sp.
III. Margronia helaralis
A. II and III
B. I and III
C. I, II and III
D. I and II
D. I and II
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 involved and the geographic area covered.
A. All statements are true
B. Statement 1 is true; statement 2 is false
C. All statements are false
D. Statement 1 is false; statement 2 is true
A. All statements are true
Which are characteristics of chewing insects?
I. They have two mandibles
II. They have two maxillae
III. They have two labrum
A. I, II and III
B. I and III
C. I and II
D. II and III
C. I and II
As a forester in-charge, you walked through your teak plantation. You noticed that the leaves look dry and scorched along the margins. The teak trees are deficient in:
A. Calcium
B. Nitrogen
C. Potassium
D. Phosphorus
C. Potassium
In typhoon-belt areas, extreme wind velocities reach to about 200 km/h. To reduce some of the damages, a shelterbelt is established. What are some of the desirable characteristics of species for shelterbelts?
I. wind firmness
II. rapid development
III. ability to coppice
A. I, II and III
B. II and III
C. I and III
D. I and II
A. I, II and III
Gugo is used extensively in the Philippines and other oriental countries for washing hair. What is the scientific name of gugo?
A. Pitisia sp.
B. Entada phaseoloides
C. Nymphoides indica
D. Ludwegia adscebdens
B. Entada phaseoloides
_____ is an organism with or having three or more sets of chromosomes.
A. multiploid
B. diploid
C. haploid
D. polyploidy
D. polyploidy
Which of the following are characteristics of natural regeneration?
I. Often the simplest and cheapest type of forest management because it requires small investment.
II. It may result in the production of better quality trees.
III. It is applicable in degraded areas.
A. I and III
B. II and III
C. I, II and III
D. I and II
D. I and II
An area is proclaimed as protected area if it meets three criteria. It has unique ecosystems. It is a wildlife corridor. What is the other criterion?
A. It is a mountainous area
B. It does not have indigenous peoples inside
C. It is a resource reserve
D. It contains locally endemic species
D. It contains locally endemic species
What generally influence the quality of seeds or seedlings?
A. Parent’s physical appearance and environment
B. Parent’s physical appearance and soil nutrients
C. Parent’s genetic composition and/or environment
D. Parent’s genetic composition and soil nutrients
C. Parent’s genetic composition and/or environment
Altered soil microclimate is detrimental to soil organisms which require moisture for processes. Compaction of soil has no effect on microbial activity.
A. All statements are true
B. Statement 1 is false; statement 2 is true
C. All statements are false
D. Statement 1 is true; statement 2 is false
D. Statement 1 is true; statement 2 is false
Which is NOT an indigenous species in the Philippines?
A. Gubas
B. Katooan bangkal
C. Bagras
D. Yemane
D. Yemane
Which of the following is the initial symptom of canker disease caused by Corticium discolor in neem trees?
A. branch swelling
B. yellowing of leaves
C. necrosis
D. girdled branches
B. yellowing of leaves
Canker disease in tree species are evidenced by which of the following:
I. longitudinal bark cracks
II. girdled branches
III. necrosis of leaves
A. II and III
B. I and II
C. I, II and III
D. I and III
C. I, II and III
____ is an ecosystem that accumulates plant material overtime and store an average of 10x more carbon per hectare than any other ecosystem.
A. wetland reserve
B. forest reserve
C. peatland
D. national park
C. peatland
_____ species are those that germinate and establish seedlings only in highly distributed environments.
A. Endangered species
B. Pioneer species
C. Keystone species
D. Climax species
B. Pioneer species
What are the purposes of mulching with grasses or leaves?
I. reduces evaporation
II. prevents hardening of surface soil
III. facilitates root penetration
A. I, II and III
B. I and III
C. I and II
D. II and III
A. I, II, and III
Per Executive Order No. 23, it is the obligation of the State to protect the remaining forest area of the country. It is also its obligation to allow natural regeneration of residual forests and development of plantation forests.
A. Statement 1 is true; statement 2 is false
B. All statements are true
C. All statements are false
D. Statement 1 is false; statement 2 is true
B. All statements are true
Which of the following are characteristics of clayey soils?
I. Excellent water-holding capacity
II. Excellent mineral-holding capacity
III. Difficult to work with
A. II and III
B. I and II
C. I and III
D. I, II and III
D. I, II and III