Which of the following statements does not comply with the International Code of Botanic Nomenclature.
a. A plant could have but one valid scientific name.
b. The name should be the latest usable one.
c. Two different species or two different genera could not bear the same name.
d. The generic and specific combinations should be succeeded by the names of the authors.
b. The name should be the latest usable one.
The other term for complete metamorphosis
a. ametabolous
b. holometabolous
c. hemimetabolous
d. helimetabolous
b. holometabolous
The scientific name of pagatpat is…
a. Rhizophora apiculata
b. Bruguiera parviflora
c. Avicennia alba
d. Sonneratia alba
d. Sonneratia alba
Invasive species are species which have the ability to become established in natural or semi-natural environments or communities and cause an ecological imbalance. Which of the following groups is not among the invasive species in the Philippines as reported in ASEAN Biodiversity Magazine?
a. tubang-bakod, kamagong, native kuhol
b. golden apple snail, Thai catfish, American bullfrog
c. water hyacinth, morning glory, Mimosa pudica
d. hagonoy, large leaf lantana, cogon
a. tubang-bakod, kamagong, native kuhol
This Republic Act is known as the “National Caves and Cave Resources Management and Protection Act” of 2001.
a. RA 9702
b. RA 2709
c. RA 7290
d. RA 9072
d. RA 9072
The first stage of seed germination:
a. emergence of hypocotyls
b. breaking of testa
c. enlargement of endosperm
d. water absorption
d. water absorption
The scientific name of almon is Shorea almon. On the other hand, the scientific name of malaanonang is Parashorea malaanonan.
a. Only the first statement is true
b. Both statements are true
c. Only the second statement is true
d. Both statements are false
a. Only the first statement is true
Gugo is used extensively in the Philippines and other oriental countries for washing hair. What is the scientific name of gugo?
a. Pistia sp.
b. Entada phaseoloides
c. Nymphoides indica
d. Ludwigia adscendens
b. Entada phaseoloides
The prevention of crossing among populations due to growth on different sites:
a. genetic isolation
b. phenological isolation
c. ecological isolation
d. geographical isolation
c. ecological isolation
It is the study of algae:
a. Physiology
b. Bacteriology
c. Phycology
d. Mycology
c. Phycology
Supporting roots arising above ground level and growing downwards and outwards into the ground.
a. taproot
b. fibrous roots
c. buttress
d. fascicled roots
c. buttress
A covering, composed partly or wholly of silk or other sticky fiber, spun or constructed by many larvae as a protection for the pupal stage.
a. chrysalis
b. cocoon
c. exuvia
d. ootheca
b. cocoon
A three-needle leaf of one Philippine conifer.
a. Agathis damara
b. Pinus kesiya
c. Pinus merkusii
d. Podocarpus Philippinensis
b. Pinus kesiya
Which is NOT an indigenous species in the Philippines?
a. Gubas
b. Kaatoan bangkal
c. Bagras
d. Yemane
d. Yemane
In silviculture practice, the treatment involved in cutting defective trees is called:
a. sanitation cutting
b. refining
c. selection cutting
d. weeding
a. sanitation cutting
A class of trees that are evergreen, have needle or scalelike foliage and conelike fruit; often called softwood.
a. hardwood
b. conifer
c. pine trees
d. temperate trees
b. conifer
Which of the following is the initial symptom of canker disease caused by Corticium disolor in neem tree?
a. branching swelling
b. yellowing of leaves
c. necrosis
d. girdled branches
a. branching swelling
All are listed as critically endangered mammal species in DENR Administrative Order 2004-15 except:
a. tamaraw
b. dugong
c. Palawan flying fox
d. Visayan spotted deer
c. Palawan flying fox
These are simple plants without true leaves, stems, and roots but carry on photosynthesis in the presence of chlorophyll:
a. fungi
b. ferns
c. mosses
d. algae
d. algae
Insects that feed on plants:
a. entomohozorous
b. herbivorous
c. carnivorous
d. saprophagus
b. herbivorous
Per Executive Order. 23, issued in 2011, 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 forest 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
Not among the families that exude white sap.
a. Moraceae
b. Apocynaceae
c. Sapotaceae
d. Dipterocarpaceae
d. Dipterocarpaceae
After a heavy rain, the water in the soil that drains down due to gravity is called gravitational water or:
a. available water
b. free water
c. bound moisture
d. hygroscopic water
a. available water
Which of the following are characteristics of clayey soils?
I. Excellent water-holding capacity
II. Excellent mineral-holding capacity
III. Difficult to work
a. II and III
b. I and II
c. I and III
d. I, II, and III
d. I, II, and III