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What begins with predominantly inorganic environment and is characterized by early and continued dominance of producers?
A. Primary succession
What condition is manifested when internodes are stunted and leaves are clustered?
B. etiolation
What is a transition area between a protected area and the surrounding landscape?
B. buffer zone
What is the enlarged, basal portion of a pistil in which ovules are found?
C. ovary
What is the status of the statements regarding RA 9072 and RA 9147?
B. The first statement is true while the second statement is false.
What law primarily manages the Philippines protected area systems?
A. RA 7586
What differentiates a cyme from a corymb as a form of inflorescence?
B. Inner flowers open last
If 50% of the unknown species were discovered, what would be the total number of species known to science?
A. 5.6 M
To which family do tanniferous trees and shrubs belong?
C. rutaceae
What is the study of the evolutionary relationship of organisms using fossils and modern representatives?
C. systematics
What carbohydrate material makes up the cell walls of most plants?
C. cellulose
Where does ATP synthesis occur in a cell?
D. mitochondrion
What type of plants shed off their leaves at the end of each growing season?
C. deciduous
Which statements refer to forest tree improvement?
B. I, II and III
What is the characteristic of a cyme compared to a corymb?
A. Inner flowers open first
What is the symptom known as when necrotic tissue within a leaf spot cracks and falls?
A. shot hole
What is true about physical disturbances of the ecosystem?
D. Statement 1 is true, statement 2 is false
Which animals generally abound in freshwater/swamp forests?
C. Herons, dusks, flycatchers
What type of seeds can be stored at low or subfreezing temperatures for a long time?
A. All statements are true.
What are the characteristics of leaf miners attacking bagras?
D. I, II and III
Which insect concentrates on the inflorescence of bagras?
C. gall midge
What are sources of nitrogen for plants?
B. I, II and III
What nutrient deficiency is indicated by yellow spots on mahogany leaves?
D. Iron
What happens when radiant energy is intercepted by a leaf?
B. I, II and III
What results from a large planting hole with plenty of refilled soil?
C. II and III
What is the unit of vegetation that includes plants and animals associated with them?
B. Ecosystem
Which class has flowers that develop into fruits surrounding the seeds?
C. angiosperms
What is the ratio of Apitong to Red Lauan based on given ratios?
A. 21:11
What is nitrogen fixation?
C. All statements are true
What carries water with dissolved minerals from the roots to the leaves of trees?
B. xylem
What is the process by which cell walls absorb water making them softer?
D. Imbibition
What are characteristics of seed production areas?
C. I, II and III
What disease symptom is observed when plants are kept in rooms without sunlight?
B. etiolation
How many segments does the thorax of an insect consist of?
B. Three
Which is NOT a part of the leg?
D. larvae
What indicates that seeds are free from pathogenic microflora?
A. Seed health certification
Which is not a tree or shrub?
B. Eragrostiscurvuravea
What refers to the sizes of soil particles that predominate?
B. Texture-structure
What type of fruit does bagras produce?
B. stone
What is glycolysis the first phase in?
B. respiration
What kind of fruit does narra have?
A. samara
Where is leaching more pronounced?
A. Statement 1 is correct, statement 2 is false
What refers to the infestation of shoot moth to Pinuscaribbea?
B. I and II
What is the upper limit of the water holding capacity of the soil?
D. Saturation point
What is a supporting and strengthening tissue with irregular primary wall thickenings?
B. collanchyma
What characterizes Hemiptera?
A. I only
What is true about Palasan?
A. All statements are true.
What does it mean if the soil is impervious?
B. Cannot be penetrated by liquid or gas
What deals with the distribution of plants on the earth’s surface?
C. plant geography
What process washes many water soluble mineral nutrients out of the soil?
C. Leaching
What results from nutrient deficiency?
A. All statements are true
How do you classify a surface of a leaf covered with small wart-like projections?
B. Muricate
How many 8-m long sticks are needed to stake a 1 hectare plantation?
A. 3750
What characterizes the first climatic type in the Philippines?
A. No dry season with a very pronounced maximum rainy period from November to January.
What characterizes an ecosystem?
A. I and III
What are leaf margins that are cut into rounded teeth referred to as?
A. crenate
What refers to Ipscalligraphus?
A. I, II and III
What does the growth or yield of a tree depend upon?
D. Considerably greater than
To which family do Kamatog and kayugalo belong?
A. caesalpiniaceae
From where do branches of roots originate?
C. pericycle
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