Question

Flow of energy in nature takes the following path

(a) carnivores herbivores → green plants

(b) green plants herbivores → carnivores

(c) sun → green plants → herbivores → carnivores

(d) sun → carnivores → herbivores → green plants



2.Which of the following statements is not correct?

(a) Forests protect the soil from erosion

(b) Plants and animals in a forest are not dependent on one another

(c) Forests influence the climate and water cycle

(d) Soil helps forests to grow and regenerate



3.Which of the following is not prepared from the wood obtained from forest?

(a) Paper

(b) Thermocol

(c) Matchsticks

(d) Plywood



4.The first link in all food chains are

(a) herbivores

(b) carnivores

(c) green plants

(d) None of these



5.Forests are not responsible for

(a) providing medicinal plants

(b) maintaining the flow of water into the streams

(c) creating flood conditions

(d) absorbing rainwater and maintaining water table



6.Choose the correct statement.

A) Trees have crowns of different sizes and different types.

B) Trees have crowns of the same sizes and different types.

C) Trees have crowns of different sizes and the same type.

D) None of the above is correct.


7.DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 Mushrooms and other micro-organisms that live in the soil feed upon dead plant and animal tissues and are known as decomposers. These micro-organisms play an important role in forests. The humus, a dark coloured substance, is produced by decomposers. A layer of humus is found if we remove some dead leaves from the soil in forests. The presence of humus ensures that nutrients from dead plants and animals are released into the soil. When the nutrients are recycled in forests,

A) There is no wastage in forests

B) The nutrients are again absorbed by the roots of living plants.

C) Both the above are correct

D) None of the above is correct.


8.Assertion(A): A Food chain will never begin if there are no green plants.

Reason (R): Green plants produce food by the process of photosynthesis.

A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.


9.DIRECTIONS: Carefully observe pictures given below and answer the following questions. Look at the following diagram and answer the following questions.

What does the diagram represent?

A) life cycle of frog

B) an ecosystem

C) a food chain

D) a population



10..Match the Column I with Column II.

Column I Column II

(a) Decomposers (i) Dead plant and animal tissues

(b) Canopy (ii) Habitats for wildlife

(c) Porcupine (iii) Microorganisms

(d) Humus (iv) Wild animal

(e) Forest (v) Branches of tall trees







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Answer 1

Answer:

Are these tick the correct option