________ is not a pathogen of infectious disease.

Ecology was developed as a result of the need to understand, explain and solve the problems of human kind's increasingly damaging impact to_______.

They play a major role in maintaining ecosystem structure and integrity.

The following characteristic of the Ozone Layer.

I. Created by lightning and the sun rays

II. made of 3 oxygen atoms

III. It limits the ultraviolet rays from reaching the trophosphere.

The tendency for biological systems to resist change and to remain in the state of equilibrium.

How much will you pay for a wildlife collector's permit provided under DAO No. 98-29?

The biological clock enabling plants to adjust their metabolism to seasonal functions is _______.

A vegetatively covered tract of land predominantly composed of tress and other woody plants is.

If lacinia is the inner distal lob, what is the outer distal lobe of the maxilla of insect?

If lacinia is the inner distal lob, what is the outer distal lobe of the maxilla of insect?

One of the tests to determine seed quality is viability test. What is the other test?

Which of the following is true

I. Forest benefits are of value at all stages of economic development.

II. Forest can provide an important and sustainable base for rural development.

III. A well-managed forest can respond to changing demands.

The scientific name of sago palm is:

It is a strand of immature cells derived from the apical meristem which differentiates into primary vascular tissue.

The scientific name of pugahan is ________.

If the projected crown diameter of mother trees is 20 meters, what is the total area covered if there are 11 mother trees with 2 meters projected crown diameter per each mother tree?

These are all characteristics of Narra except that:

A protected fragile shield of gas that absorbs harmful ultraviolet rays of the sun that has been increasingly pierced by holes caused by man-made chemicals.

The NIPAS Act identifies________ specific categories of protected areas.

What is the classification of a surface of a leaf or a stem covered with wart-like projections?

Which of the following does not have peds that open on the tree upon maturity?

This is not an embroyophyte.

The type of species whose status provides information on the over-all condition of the ecosystem.

These are species that can be repeatedly cut but still maintain their junvenity.

The abdomen is where the_____ of the insect is found.

The following site preparation is generally suited in grassland planting where the grass is more than 1 meter high.

A survey showed that in the undisturbed dipterocarp areas, there are about 30,000-100,000 wildings per hectare. After a seed year, about 20% of these stayed dormant at least within the seed year thus assuring continuous supply of planting stocks. What is the minimum number of dormant wildings available if the mortality is 20%

Exudates are compounds that ooze out of the cut stem or trunk. Moraceae has ______ sap while Gutiferae has ______ sap

This involves the evaporation of water from the stomata on the surface of the leaves thus creating a vacuum within plant tissues and ultimately enabling roots to take up soil nutrient solustions.

The living together of two or more organisms benefitting one, harming none is referred to as________.

The maintenance of a relatively constant internal environment by an organism in a variable external environment.

A ______ is a woody-stemmed plant with single trunk while a ______is a woody plant with several stems of about the same size.

Which of the following is not a mangrove.

Diospyros ferrea belong to the family of:

The following are considered as most notable seed-borne organism which infect seed and cause deterioration even before sowing.

I. Fusarium solani

II. Fomes Spp.

III. Cladosporium cladosportoides

Which does not belong to family Sapindaceae?

This insect attacks bagras by depositing its egg on cracks an crevices of barks; then when larva develops, it cuts zigzag-tunnels between the bark and the wood.

Exudates from trees can also be classified as to types. Sapotaceae has ______while Nyctaginaceae has ___ sap.

It increases the density of desirable species by interplanting, planting on gaps or planting along the cleared lines.

The following can cause wood decay.

I. Fomes lignosus

II. Sclerotium rolfsii

III. Ganoderma pseudoterreum

These are tiny green bodies in the original land area of 27, 960 hectares. Over the years, this was reduced to only 10, 492 has. How many percent of the watershed was lost.

Parenchyma are relatively unspecialized thin-walled cells for storage. Schlerenchyma is a thin walled cell which strengthens tissues.

The hypocotyl is a part of the embryo that develops into a ______.

In organic soils, more than_____ percent of the soil particles are organic.

What is described as the world's smallest monkey?

This species has large and robust leaves that are suitable for disposable platters and as wrapper for food.

A nutrient that promotes respiration and formation of the chlorophyll?

It refers to the response of plants to relative lengths of light and dark period.

The conversion of living things into inorganic material through geological processes.