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Animals devoid of respiratory, excretory...

Animals devoid of respiratory, excretory and circulatory organs belong to phylum ………………….. .

A

echinodermata

B

platyhelminthes

C

porifera

D

mollusca

Text Solution

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The correct Answer is:
C
porifera
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  1. Which of the following is not reported to have any fresh water forms?

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  2. Pseudocoelom is not found in …………………… .

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  3. Animals devoid of respiratory, excretory and circulatory organs belong...

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  4. Cilia of gills of bivalve molluscs help in …………………… .

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  5. All flat worms differ from all round worms in having …………… .

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  6. Parthenogenesis can be seen in

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  7. The endocrine gland of insects, which secretes the juvenile hormone, i...

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  8. Malpighian tubules are ……………….. .

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  9. In mollusca, eye is present over a stalk called ……………….. .

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  10. Which of the following symmetries is found in adult sea anemone?

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  11. Feeding in sponges takes place through ………………. .

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  12. Osphradium is meant for ………………. .

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  13. Excretory product of spider is ……………………………………….

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  14. Which of the following is not the character of Taenia solium?

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  15. Daphnia is commonly known as ………………. .

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  16. Wuchereria is found in …………………. .

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  17. Turbellarians are free living ............ .

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  18. Polyp phase is absent in …………………. .

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  19. Animals having pseudocoelomate and triploblastic nature are present in...

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  20. Primitive nervous system is formed in …………………. .

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