Download PDF – Microbes in Human Welfare : Class – 12th (Biology) Practice Test | MCQs for NEET

Microbes in Human Welfare : Class – 12th (Biology) Practice Test | MCQs for NEET

Q1. Integrated Pest Management (IPM) discourages the excessive used of

A) biological methods

B) chemical pesticides

C) mechanical methods

D) all of these

Answer: (B)

chemical pesticides

Q2. Which of the following is not used as a biopesticide ?

A) Trichoderma harzianum

B) Nucleopolyhedrovirus

C) Xanthomonas campestris

D) Bacillus thuringiensis

Answer: (C)

Xanthomonas campestris is not used as a biopesticide

Q3. Organic farming does not include

A) green manures

B) chemical fertilisers

C) farmyard manures

D) compost

Answer: (B)

chemical fertilisers

Q4. Organic farming includes

A) use of fertilisers and pesticides of biological origin

B) IPM (Integrated Pest Management)

C) locally developed pest resistant varieties

D) all of these

Answer: (D)

all of these

Q5. Living organisms used to enrich the nutrient quality of the soil are called as

A) biocontrol agents

B) biofertilisers

C) synthetic fertilisers

D) natural fertilisers

Answer: (D)

Living organisms used to enrich the nutrient quality of the soil are called as natural fertilisers

Q6. Biofertilisers are

A) some bacteria and cyanobacteria

B) fertilisers formed by ploughing in barseem

C) fertilisers obtained by decay of dead organisms

D) fertilisers prepared by mixing cattle dung with crop residues

Answer: (A)

These are some bacteria and cyanobacteria

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