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Pheretima posthuma (earthworm) is highly...

Pheretima posthuma (earthworm) is highly useful as or Most important use of earthworm is

A

their burrows make the soil loose

B

they make the soil porous, leave their castings and take organic debris in the soil

C

they are used as fish meal

D

they kill the birds due to biomagnification of chlorinated hydrocarbons

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The correct Answer is:
B
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ARIHANT NEET-STRUCTURAL ORGANISATION IN SOME ANIMALS -CHAPTER EXERCISES (A) TAKING IT TOGETHER (ASSORTED QUESTIONS OF THE CHAPTER FOR ADVANCED LEVEL PRACTICE )
  1. Given below the figure of alimentary canael of cockroach. Ident...

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  2. Which one of the following is correctly matched regarding earth...

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  3. Pheretima posthuma (earthworm) is highly useful as or Most important u...

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  4. Photoreceptors in earthworms occur in

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  5. Intergumentary nephridia of Earthworm occur in

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  6. Pheretima posthuma and Periplanata are similar in which aspect

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  7. Identify A to E in the given diagram of female reproductive sy...

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  8. One of the main functions of frog's skin is

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  9. Which one of the following is not a characteristic feature of frog

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  10. The given figure is related to female reproductive system of fr...

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  11. How do you differentiate a frog from a toad

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  12. Which is correct respiration in Earthworm?

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  13. Earthworms obtain oxygen for respiration through moist skin. They...

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  14. The septal and pharyngeal nephridia open into alimentary canal and are...

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  15. Which one correctly describes the location of body parts in Pheretima?

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  16. Nephrostome occurs in

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  17. The body wall of earthworm is covered by which of the following l...

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  18. Choose the correct statement regarding frog from the following.

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  19. Fenestra ovalid in frog is the

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  20. Acrosome of the sperm of frog helps in fertilization by

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