biology in human welfare - Category wise Question and Answer Practice Test with Solutions

Question : 6

Two microbes found to be very useful in genetic engineering are

a) Crown gall bacterium and Caenorhabditis elegans

b) Vibrio cholerae and a tailed bacteriophage

c) Diplococcus sp. and Pseudomonas sp.

d) Escherichia coli and Agrobacterium tumefaciens

Question : 7

Three crops that contribute maximum to global food grain production are

a) Wheat, maize and sorghum

b) Wheat, rice and maize

c) Wheat, rice and barley

d) Rice, maize and sorghum

Question : 8

Organic farming is the technique of raising crops through use of

a) Biofertilisers

b) Manures

c) Resistant varieties

d) All of these

Question : 9

Which one of the following is not an antibiotic ?

a) Griseofulvin

b) Streptomycin

c) Citric acid

d) Cephalosporin

Question : 10

The technology of biogas production was developed in India mainly due to the efforts of

a) Indian Council of Medical Research (ICMR)

b) Indian Agricultural/ Research Institute (IARI) and Khadi and Village Industries Commission (KVIC)

c) National Botanical Research Institute (NBR1)

d) Indian Council of Agricultural Research (ICAR)