Which of the following statements are correct?
(A) In the last five decades or so, India almost totally neglected compost and switched over to chemical fertilisers.
(B) Earthworms convert organic matter into compost more slowly than the normal composting process.
(C) Several types of pest controlling chemicals have been isolated from neem.
(D) Owls and peacocks prey upon vermin and pests.
(E) Biocomposting increases the quantity of waste that civic authorities have to dispose of.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A), (C) and (D) only
Two statements reverse one word of the book’s lines on compost and pest control.
(A) In the last five decades or so, India almost totally neglected compost and switched over to chemical fertilisers. — Correct. In the push for more output, compost was almost totally neglected.
(B) Earthworms convert organic matter into compost more slowly than the normal composting process. — Incorrect. Earthworms do it faster, not more slowly.
(C) Several types of pest controlling chemicals have been isolated from neem. — Correct. Neem gives plant-based pesticides.
(D) Owls and peacocks prey upon vermin and pests. — Correct. These birds help in biopest control.
(E) Biocomposting increases the quantity of waste that civic authorities have to dispose of. — Incorrect. Civic authorities have to dispose of a reduced quantity of waste.
NCERT (2026-27): “7.5 Strategies for Sustainable Development … Biocomposting: In our quest to increase agricultural production during the last five decades or so, we almost totally neglected the use of compost and completely switched over to chemical fertilisers. …” “… Earthworms can convert organic matter into compost faster than the normal composting process. This process is now being widely used. Indirectly, the civic authorities are benefited too as they have to dispose reduced quantity of waste.” “7.5 Strategies for Sustainable Development … One such step is the use of pesticides based on plant products. Neem trees are proving to be quite useful. Several types of pest controlling chemicals have been isolated from neem and these are being used. Mixed cropping and growing different crops in consecutive years on the same land have also helped farmers. In addition, awareness is spreading about various animals and birds which help in controlling pests. For example, snakes are one of the prime group of animals which prey upon rats, mice and various other pests. Similarly, large varieties of birds, for example, owls and peacocks, prey upon vermin and pests. …” |