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The biological control of agricultural pests, unlike chemical control is

Very expensive
Polluting
Self perpetuating
Toxic
Additional Questions

Which one of the following is used as biological insecticide?

Answer

Yeast is used in the production of

Answer

Which of the following microbes is used for commercial production of ethanol?

Answer

Crop rotation is used by farmers to increase

Answer

During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undergraded?

Answer

In paddy fields biological nitrogen fixation is chiefly brought by

Answer

Study the followings related to uses of plants and identify the correct match for the sorghum and cotton respectively.

I. Blood purification and organic fertilizer.

II. Animal feed and paper industry

III. B Vitamin and cosmetics.

IV. Explosives and organic fertilizer.

The correct pair is:

Answer

Agriculture by using only biofertilizers is called

Answer

Bacterial leaf blight of rice is caused by a species of:

Answer

Which of the following is a symbiotic nitrogen fixer?

Answer
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