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Assertion(A): In sponges, archaeocytes a...

Assertion(A): In sponges, archaeocytes are totipotent.
Reason( R): They give rise to all types of amoebocytes and are self replicating.

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

B

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion

C

Assertion is true, but Reason is False

D

Assertion is false, but Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
Archaeocytes are cells of sponge which play an important role in reprodution and regeneration . They may be converted into other types of cells are also called undifferentiated totiponent cells.
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ARIHANT NEET-ANIMALIA -I (LOWER INVERTEBRATES)-CHAPTER EXERCISES (Taking it together) Medical entrances special format questions (Assertion and reason)
  1. Assertion Endotherms are cold-blooded animals. Reason Ectotherms ca...

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  2. Assertion Hydra is a diploblastic animals . Reason Hydra is derived...

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  3. Assertion(A): In sponges, archaeocytes are totipotent. Reason( R): T...

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  4. Assertion : Sponges belong to Porifera Reason : Sponges have canal s...

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  5. Assertion Spongilla and Leucosolenia are structurally similar sponges ...

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  6. Assertion Sponges are less specialised ones. Reason Sponges show lea...

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  7. Assertion : Sponges do not show any animal nature. Reason : Sponges ...

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  8. Assertion In Hydra, both pseudopodia and flagella occur in sensory ce...

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  9. Assertion The coelenteron of Hydra is called gastrovascular cavity. ...

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  10. Assertion Medusa of Obelia is carnivorous . Reason Digestion is bot...

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  11. Assertion : Coelenterates shown altermation of generation. Reason : ...

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  12. Assertion Hydatid vesicle is the characteristic of Echinococcus for ab...

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  13. Assertion Taenia solium has a characteristic uterus. Reason The ute...

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  14. Assertion In Fasciola hepatica, digestion is intracellular. Reason ...

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  15. Assertion Paragonimus is known as lung fluke. Reason Lung fluke spe...

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  16. Assertion Scolex with hooks are present in Taenia Reason Structure ...

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  17. Assertion Nematodes are different from flatworms Nematodes are commo...

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  18. Assertion Telogonic is a condition of ovary Reason The telogonic go...

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  19. Assertion Copulatory bursa is present in male Ancylostoma Reason Co...

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  20. Assertion A parasitic disease elephantiasis can be identified with en...

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