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Choanocytes form the lining of paragastr...

Choanocytes form the lining of paragastral cavity in

A

jellyfish

B

sponges

C

helminthes

D

echinoderms

Text Solution

Verified by Experts

The correct Answer is:
C
Choancytes form the lining of paragastral cavity ini sponges By constant beating of flagella of choanocyte cells, a water current is produced, which has a fixed direction.
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Note the following (A) It forms the lining of the cavities of alveoli of the lungs (B) it forms the lining of wet surfaces like buccal cavity and oesophagus (C) it occurs in the ducts of sweat glands (D) it forms the lining of salivary glands and sweat glands (E) it is a loose connetive tissue Which of the above are associated with ltrgt simple epithelial tissue ?

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ARIHANT NEET-ANIMALIA -I (LOWER INVERTEBRATES)-CHAPTER EXERCISES (Taking it together) medical entrances gallery (Collection of Questions Asked in NEET & in various Entrance Exams))
  1. Which of the statements regarding coelenterates is/are wrong I. Cnid...

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  2. Which one of these is referred to as Venus flower basket ?

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  3. Choanocytes form the lining of paragastral cavity in

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  4. In the cycle of Ascaris lumbricoides rhabditiform larva undergoes 2nd ...

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  5. Infection of Ascaris usually occurs by :

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  6. Choanocytes are present in

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  7. Match the following Columns with reference to Taenia.

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  8. Pentaradial symmetry occurs in

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  9. Which one of the following statements about certain given animals is c...

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  10. Biradial symmetry and lack of cnidoblasts are the characteristics of

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  11. Sycon belongs to a group of animals which are best described as

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  12. The true statement regarding corals is

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  13. Jellyfish belongs to class

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  14. Nematoblasts are found in

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  15. Match the following cloumns .

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  16. Flatworms excrete through

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  17. Which of the following cells are useful for feeding in sponges?

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  18. In most simple type of canal system of porifera, water flows through w...

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  19. Which one of the following animal phyl possesses spicules ?

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  20. The non-cellular layer present between pinacoderm and choanoderm in bo...

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