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Consider the following statements about earthworms: A. They soften the soil as they keep digging underneath to make tunnels. B. They eat the dead leaves and plants and their droppings fertilise the soil. C. They turn the waste into compost. D. They produce compost which is costlier than the fertilizers made in factories. E. Spraying chemicals (pesticides) does not affect the earthworms. The true statements are

Consider the following statements about earthworms: A. They soften the soil as they keep digging underneath to make tunnels. B. They eat the dead leaves and plants and their droppings fertilise the soil. C. They turn the waste into compost. D. They produce compost which is costlier than the fertilizers made in factories. E. Spraying chemicals (pesticides) does not affect the earthworms. The true statements are Correct Answer A, B and C

​Explanation:

Earthworm:

  • The earthworm is a reddish-brown terrestrial invertebrate.
  • They inhabit the upper layer of the moist soil.
  • During day time, they live in burrows made by boring and swallowing the soil.
  • Earthworms play a vital role in the natural cycle of the earth.
  • The Earthworms soften the soil by digging underneath to make tunnels.
  • They play a crucial role in breaking down organic matter and fertilising the soil, simply through their constant eating and pooping.
  • Earthworms can be used for fishing and compost.
  • Worms are important to the ecosystems in which they live and breed.
  • They are known as farmers friends as their compost helps in enriching the soil and give bountiful produce.
  • Kingdom: Animalia
  • Phylum: Annelida
  • Class: Clitellata
  • Family: Lumbricidia

Important Points

Earthworms are useful in several ways for farmers:

  • Earthworms make the soil porous by digging burrows in the soil. Hence they are called friends of the farmers.
  • The nitrogenous wastes and other waste products of the earthworms form food for plants. This process of increasing the fertility of the soil by earthworms is called vermicomposting.
  • Earthworms are used as fish bait to catch fish.
  • Some tribals in India use earthworms as medicine to cure jaundice, piles, diarrhoea, bladder stones, etc.
  • The earthworms reduce both acidity and alkalinity of the soil and create optimum conditions for plant growth.
  • The density of earthworms in the soil is considered to be a good indicator of healthy soil because they increase the soil's water-holding capacity and moisture content.

Thus,

A. They soften the soil as they keep digging underneath to make tunnels. Correct
B. They eat the dead leaves and plants and their droppings fertilise the soil. Correct
C. They turn the waste into compost. Correct
D. They produce compost which is costlier than the fertilizers made in factories. Incorrect
E. Spraying chemicals (pesticides) does not affect the earthworms. Incorrect

Related Questions

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