Free Microbes In Human Welfare (Weekly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

A good producer of citric acid is

(a) Aspergillus

(b) Clostridium

(c) Saccharomyces

(d) Pseudomonas.

Question-2

Pollution from animal excreta and organic wastes from kitchen can be most profitably minimised by

(a) using them for producing biogas.

(b) storing them in underground storage tanks.

(c) vermiculture.

(d) using them directly as biofertilizers.

Question-3

Chloramphenicol and erythromycin (broad spectrum antibiotics) are produced by

(a) Nitrobacter

(b) Streptomyces

(c) Rhizobium

(d) Penicillium

Question-4

Dragonflies are useful to get rid of _________.

(a) Aphids

(b) Ladybird

(c) Mosquitoes

(d) Both (a) and (c)

Question-5

'Antibiotics' literally means

(a) Against life

(b) Protecting life

(c) Healing life

(d) Accelerating life

Question-6

Select the correct statement from the following.

(a) Biogas, commonly called gobar gas, is pure methane

(b) Biogas is produced by the activity of aerobic bacteria on animal waste

(c) Methanobacterium is an aerobic bacterium found in rumen of cattle

(d) Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.

Question-7

Match the following columns.

Column I	Column II
A. Citric acid	1. Trichoderma
B. Cyclosporin	2. Clostridium
C. Statins	3. Aspergillus
D. Butyric acid	4. Monascus

Codes A B C D

(a) 3 1 4 2

(b) 3 1 2 4

(c) 1 4 2 3

(d) 3 4 1 2

Question-8

Which drug is generally administered at the time of organ transplant procedure?

(a) Bleomycin

(b) Actinomycin-D

(c) Cyclosporin-A

(d) Paclitaxel

Question-9

Insect resistant transgenic cotton has been produced by inserting a piece of DNA from

(a) a wild relative of cotton

(b) an insect

(c) a bacterium

(d) a virus

Question-10

Petro-crops are plants

(a) Used in refining crude oil

(b) Grown near oil plants

(c) Whose fossil remains formed crude oil

(d) From which petrol like fuels can be derived