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Assertion. Water current flowing through...

Assertion. Water current flowing through the canal system is of prime importance for the sponges.
Reason. It helps sponges in nutrition, respiration, excretion and reproduction.

A

If both A and B are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true but R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
A
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PRADEEP-ANIMAL KINGDOM -Assertion-Reason Type Questions
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  3. Assertion. Water current flowing through the canal system is of prime ...

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  4. Assertion.The cnidarians are a great nuisance to the humans swimming i...

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  5. Assertion. Coral reefs serve as stable marine ecosystems. Reason. Th...

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  6. Assertion. Egg is alecithal ( yokless) in the flatworms. Reason. Yok...

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  7. Assertion. The roundworms are eucoelomates. Reason. They have a flu...

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  8. Assertion. Coelom in the annelids is divided into compartmentsby trans...

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  9. Assertion. Blood does not clot as a leech is sucking it. Reason. An ...

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  10. Assertion. Oysters and clams produce pearls. Reason. They are cultur...

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  11. Assertion. Sepia emits a dark cloud of ink when persued by an enemy. ...

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  12. Assertion. Many female insects emit pheromones into the air. Reason...

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  13. Assertion. Arthropods undergo periodic ecdysis during their growth. ...

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  14. Assertion. Ambulacral system of echinoderms contains water. Pores in...

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  15. Assertion.Annelids, mollusks and arthropods are protostomous coelomate...

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  16. Assertion. Small Tiedmann's bodies are associated with the ring ambula...

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  17. Assertion.Termites and ants are social insects. Reason. Both establi...

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  18. Assertion: Tapeworm, roundworm and pinworm are endoparasites of human ...

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  19. Read the given statements and select the correct option. Statement 1...

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  20. Assertion. Urochordate's tadpole larva is more chordata-like than the ...

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