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Assertion (A): The leaves of hydrilla ar...

Assertion (A): The leaves of hydrilla are long and thin.
Reason (R): The strong water currents are not able to tear them apart.

A

A is correct and R is the correct explanation of A.

B

A is correct and R is not the correct explanation of

C

A is correct and R is wrong.

D

A is wrong and R is correct.

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BETOPPERS-OUR ENVIRONMENT-SUMMATIVE WORKSHEET (ANSWER THE FOLLOWING QUESTIONS:)
  1. Assertion (A): The leaves of hydrilla are long and thin. Reason (R):...

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  2. Name the different kinds of living organisms which exist in our enviro...

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  3. How are the following adapted to live in their respective environment?...

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  4. How are the following adapted to live in their respective environment?...

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  5. How are the following adapted to live in their respective environment?...

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  6. How are the following adapted to live in their respective environment?...

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  7. How are the following adapted to live in their respective environment?...

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  8. Name two biodegradable materials.

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  9. Name one non-biodegradable material.

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  10. Name two scavengers.

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  11. Name the raw materials used by plants to manufacture their food.

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  12. Which gas is released during the process of photosynthesis?

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  13. How have the socio-cultural activities influenced our environment?

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  14. Write on the cultural component of the environment.

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  15. Write in brief about the components of the environment.

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  16. Write the brief about the abiotic components of the environment?

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  17. Give examples of three food chains operating in nature.

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  18. Give reason Plants called producer.

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  19. What is meant by a food web? Explain with the help of a simple diagram...

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  20. What would happen if any of the links is missing in the food chain?

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  21. "Life would be impossible without plants". Explain.

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