SCIENCE-QUIZZ NO # 2

Which of the following molluscs does not belong to the group?

• a. clam

• b. oyster

• c. scallop

• d. snail

What is the term used for the top part of the rain forest?

• a. emergent

• b. canopy

• c. forest floor

• d. understory

Which food chain does occur in the forest ecosystem?

Why is producer important in an ecosystem?

• A. It is the source of food to the consumers.

• B. It is an organism that eats plants.

• C. It breaks down organism into smaller particles.

• D. It is a series of feeding relationship.

What kind of interaction is shown when animals like crabs and mollusks help break down plant litter in a mangrove ecosystem through grazing?

• A. competition         

• B. commensalism

• C. parasitism

• D. mutualism

Which of the following characterizes a tropical rainforest ecosystem?

            I. It is located at the polar zones.

            II. It has diverse plant and animal species

            III. It is situated in tropical places.

            IV. It caters to few plants and animals.

• A. I and II       

• B. II and III

• C. I and III   

•  D. III and IV

Which is not a function of mangrove roots?

• a. filter out salts

• b. build up shorelines

• c. absorb and store salt from the water

• d. remove impurities and pollutants from water

How can mangrove plants tolerate salt water?

• a. they do not absorb salt water

• b. they use salt and water to make food

• c. their bark is made up of salt-proof material

• d. they filter salt from the water using their roots

Which of the following describes a canopy of the rainforest?

• A. composed of trees that are 130 to 180 feet tall

• B. about 59 feet and consists of trunk of canopy, shrubs, small plants and trees

• C. consists mostly of fungi, insects, worms and litter from taller trees

• D. has slender trees from a dense platform of vegetation with 60 to 129 feet.

 Mangrove swamps is one of important components of the ecosystem? Where do they usually found?

• A. along arctic coastlines

• B. along rocky coastlines

• C. along temperate coastlines

• D. along tropical and subtropical coastlines