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One direct use of earthworms to far...

One direct use of earthworms to farmers is

A

allowing sunlight to pass in upper layers of soil

B

enrichment of soil by nephridial excreptions

C

removal of dead leaves

D

killing of some harmful insects

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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. A frog must swallow air to expand the lungs because frog

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  2. Dissection of frog is done from ventral side because

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  3. One direct use of earthworms to farmers is

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  4. Nephridia of Earthworm are analogous to

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  5. Given below the figure of alimentary canael of cockroach. Ident...

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

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

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  8. Photoreceptors in earthworms occur in

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  9. Intergumentary nephridia of Earthworm occur in

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  10. Pheretima posthuma and Periplanata are similar in which aspect

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

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

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

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

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  15. How do you differentiate a frog from a toad

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  16. Which is correct respiration in Earthworm?

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

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

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

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  20. Nephrostome occurs in

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