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The internal skeleton of Leucosolenia is...

The internal skeleton of Leucosolenia is formed of calcareous

A

monaxon (single -rayed) spicules

B

monaxon and tri-radiate (three-rayed) spicules

C

tri-radiate and quadri-radiate (four -rayed) spicules

D

monaxon, tri-radiate and quadri-radiate spicules

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The correct Answer is:
D
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ARIHANT NEET-ANIMALIA -I (LOWER INVERTEBRATES)-CHAPTER EXERCISES (Taking it together) Assorted Questions of the Chapter for Advanced Level Practise
  1. In the members of phylum-Porifera

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  2. Which of the following is a false statement ?

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  3. The internal skeleton of Leucosolenia is formed of calcareous

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  4. The principle cell types present in the body wall of Leucosolenia are ...

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  5. Choose the incorrect pair from the following

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  6. Sponges are multicellular organisms yet they have no respiratory organ...

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  7. Which one of the following statement about all four of Spogilla , leec...

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  8. Cnidarians exhibits two basic body forms called polyp and medusa. The ...

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  9. Recent biochemical evidence indicated that cnidarians , as well as spo...

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  10. Hydra/Obelia is

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  11. If a Hydra is cut into two parts

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  12. Choose the false statements .

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  13. Identify and tick the option which is incorrect feature of medusae.

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  14. In the life history of Aurelia, the correct chronological sequence of ...

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  15. Which of the following is true ?

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  16. Which of the following statements is not true ?

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  17. Which of the following statements is incorrect about ctenophora ?

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  18. Nuda and Beroe are members of class- Nuda of phylum -ctenphora . The s...

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  19. Among the statements given below find ou which one is not true about P...

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  20. A proglottid is called gravid proglottid , when it has

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