Biology - Questions and Answers, General Study (GK)

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361.

In dry regions, the leaf size of a tree becomes smaller. It is so to

(a)Reduce metabolism

(b)Maintain natural growth

(c)Reduce transpiration

(d)Protect plant from animals

Comment

Answer is: CNA

362.

Which is the main constituent of Biogas?

(a)Carbon dioxide

(b)Methane

(c)Hydrogen

(d)Nitrogen dioxide

Comment

Answer is: BNA

363.

Which of the following gas do not considered as polluting agent of air?

(a)CO₂

(b)CO

(c)NO₂

(d)SO₂

Comment

Answer is: ANA

364.

Eco-mark is given to an Indian product which is

(a)Rich in protein

(b)Environment

(c)Economically viable

(d)Pure and unadulterated

Comment

Answer is: BNA

365.

Workers of paint industry are exposed to which one of the following hazards?

(a)Nickel pollution

(b)Cadmium pollution

(c)Strontium pollution

(d)Lead pollution

Comment

Answer is: DNA

366.

Van Mahotsav is associated with

(a)Cutting trees

(b)Planting trees

(c)Increase in crop

(d)Protection of plants

Comment

Answer is: BNA

367.

Crop shown soon after the onset of south-West monsoon in India is called

(a)Rabi

(b)Kharif

(c)Rainfed

(d)Dry farming

Comment

Answer is: BNA

368.

The major combustible component of gobar (cow dung) gas is

(a)Methane

(b)Carbon dioxide

(c)Hydrogen

(d)Propane

Comment

Answer is: ANA

369.

Which one among the following group of items contains only biodegradable items?

(a)Wood, grass, plastic

(b)Wood, grass, leather

(c)Fruit peels, lime juice, china clay cup

(d)Lime juice, grass, polystyrene cup

Comment

Answer is: BNA

370.

Xerophytes thrive in

(a)Hot and arid conditions

(b)Cool and wet conditions

(c)Hot and wet conditions

(d)Cool and arid conditions

Comment

Answer is: ANA

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Biology - Questions and AnswersPage 37

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