Steps Towards Prevention

Q.

What are the different stages that are involved in the farming practices?

Q.

Mention one significance of bioreactors.

Q. Biofuel can be produced from:

1. Agricultural waste

2. Organic waste

3. Human waste

4. Electronic waste

Q. In the recent Global Environmental Summit, a few suggestions on the preventive measures towards soil pollution were putforth:
(i) Introducing crop rotation to reduce damage and diseases by pests and fungi
(ii) Introducing pest resistant genetic strains
(iii) Introducing herbicides and fungicides to prevent crop damage
(iv) Introducing chemical fertilizers for better growth of crop

Which of these suggestions would reduce soil pollution?

1. i and iv
2. i, ii and iii
3. i and ii
4. ii, iii and iv

Q.

Which of the following statement(s) is/are false with regards to excessive usage of fertilisers?

1. They are eco-friendly.
2. They improve the quality of groundwater.
3. They adversely affect the useful component of the soil.
4. They reduce the self regeneration capacity of the soil.

Q. Which of the following helps in maintaining soil fertility?
A. Crop rotation
B. Herbicides
C. Pesticides

1. Only A
2. Only B
3. A and C
4. A, B and C

Q. _____ is the successive cultivation of different crops to reduce the incidence of pests.

1. Monoculture
2. Crop rotation
3. Tissue culture
4. Sustainable farming

Q. Which of the following substances are biodegradable waste?

1. Plastics
2. Aluminium cans
3. Metal scraps
4. Food waste