Free Strategies For Enhancement In Food Production (Weekly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Outbreeding is an important strategy of animal husbandry because it :

(a) is useful in overcoming inbreeding depression.

(b) is useful in producing purelines of animals.

(c) exposes harmful recessive genes that are eliminated by selection.

(d) helps in accumulation of superior genes.

Question-2

The capacity to regenerate whole plant from plant cell or explant is known as

(a) Pluripotency

(b) Totipotency

(c) Metaplasia

(d) Atrophy

Question-3

Which statements are correct about Atlas-66?

(a) It has been used as a donor for improving cultivated wheat

(b) It has high protein content

(c) Both (a) and (b)

(d) Protina, Shakti and Rattan are three improved and biofortified hybrids of Atlas-66

Question-4

Match the following columns.

Column I(Breeding types)	Column II(Features)
A. Outcrossing	1. Exposes harmful recessive genes that are usually eliminated by selection
B. Cross-breeding	2. Mating of animals belonging to different breeds
C. Interspecific hybridisation	3 Mating of animals of same breed but having no common ancestors on either side of their pedigree for 4-6 generations
D. Inbreeding	4 Mating of animals of different species

Codes A B C D

(a) 4 3 2 1

(b) 1 2 3 4

(c) 3 2 4 1

(d) 2 4 3 1

Question-5

Somatic hybridization is a technique of

(a) Natural pollination

(b) Natural breeding

(c) Artificial pollination

(d) Somatic cell hybridization

Question-6

The term 'breed' means

(a) A group of animals which depend on each other.

(b) A group of animals related by descent and similar in most of the characters like general appearance, feature, size and configurations.

(c) A group of animals living in a same habitat.

(d) A group of animals which can't reproduce with each other.

Question-7

Which of the following statements is not true about somatic embryogenesis?

(a) Somatic embryos can develop from microspores.

(b) The pattern of development of a somatic embryo is comparable to that of a zygotic embryo.

(c) Somatic embryo is induced usually by an auxin such as 2, 4-D.

(d) A somatic embryo develops from a somatic cell

Question-8

A cybrid is a hybrid carrying

(a) genomes and cytoplasms of two different plants.

(b) cytoplasms of two different plants.

(c) cytoplasms of two different plants and genome of one plant.

(d) genomes of two different plants.

Question-9

Which one of the following is an exotic Indian fish ?

(a) Heteropneustes fossilis

(b) Catla catla

(c) Cyprinus carpio

(d) Labeo rohita

Question-10

Crop improvement is possible through

(a) selection

(b) judicious combination of selection, introduction and hybridization.

(c) scientific improvement of cultivated plants.

(d) introduction.