Home
Class 12
BIOLOGY
The reason that the chemical/synthetic f...

The reason that the chemical/synthetic fertilisers should be replaced by biofertilisers is that the former

A

are source of environmental pollution

B

are expensive

C

exhaust the valuable energy resources for their manufacture

D

all of these

Text Solution

Verified by Experts

The correct Answer is:
D
Chemical fertilisers are being used in increasing amounts in order to increase output in high yielding varieties of crop plants. However, chemical fertilisers cause pollution of water bodies as well as ground water, besides getting stored in crop plants. They are expensive and also require lot of energy resources in their manufacture.
Promotional Banner

Similar Questions

Explore conceptually related problems

Chemical fertilisers and Biofertilisers.

Assertion : Biofertilisers are preferred to chemical fertilisers. Reason : Chemical fertilisers are generally more expensive and hazardous to environment.

Assertion : In angiosperms, endosperm development precedes embryo development. Reason : Double fertilisation ensures that the nutritive tissue is formed before the zygotes starts cleaving so that the energy spent on the formation of endosperm does not get wasted.

Read the following statements (i) Birth control pills are likely to cause cardiovascular problems (ii) A women who substitutes or takes the place of the real mother to nurse the embryo is called surrogate mother (iii) Numerous children have been produced by in vitro fertilisation but with some abnormalities (iv) Women plays a key role in the continuity of the family and human species (v) Foetal sex determinatio test should not be banned Which of the following pair consists of incorrect statements

Write down the ways to minimise the use of fertilisers and chemicals so that their harmful effects on the environment are reduced.

Assertion:Fruit is the mature or ripened ovary developed after fertilisation. Reason:Fruit formed without fertilisation of the ovary is called parthenocarpic fruit.