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CBSE 12th Standard Biology Subject Strategies for Enhancement in Food Production Ncert Exemplar MCQ Questions With Solution 2021

Published on: 25/05/2021

QB365 Provides the updated NCERT Examplar Questions for Class 12 Biology, and also provide the detail solution for each and every ncert examplar questions , QB365 will give all kind of study materials will help to get more marks

Download CBSE Class 12th Standard CBSE Biology question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Biology

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Std: 12th Standard CBSE - Biology

chapter: - NCERT Exemplers

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Questions:

Multiple Choice Question

10 x 1 = 10

Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?

(a)

Thick stem, long internodes, high sugar content and disease resistant.

(b)

Thick stem, high sugar content and profuse flowering.

(c)

Thick stem, short internodes, high sugar content, disease resistant.

(d)

Thick stem, low sugar content, disease resistant.

A group of animals which are related by descent and share many similarities are referred to as

(a)

breed.

(b)

race.

(c)

variety.

(d)

species.

Inbreeding is carried out in animal husbandry because it

(a)

increases vigour

(b)

improves the breed.

(c)

increases heterozygosity.

(d)

increases homozygosity.

A collection of all the alleles of all the genes of a crop plant is called

(a)

germplasm collection

(b)

protoplasm collection

(c)

herbarium

(d)

somaclonal collection

33% India's Gross Domestic Product comes from

(a)

Industry

(b)

Agriculture

(c)

Export

(d)

Smallscale cottage industry

Which one of the following is a marine fish :

(a)

Rohu

(b)

Hilsa

(c)

Catla

(d)

Common carp

To isolate protoplast, one needs :

(a)

pectinase

(b)

cellulase

(c)

both pectinase and cellulase

(d)

chitinase

The biggest constraint of plant breeding is :

(a)

availability of desirable gene in the crop and its wild relatives

(b)

infrastructure

(c)

trained manpower

(d)

transfer of genes from unrelated sources

An explant is:

(a)

dead plant

(b)

part of the plant

(c)

part of the plant used in tissue culture

(d)

part of the plant that expresses a specific gene

10.

Given below are a few statements regarding somatic hybridization.Choose the correct statements.
(i)protoplasts of different cells of the same plant are fused
(ii)protoplasts from cells of different species can be fused
(iii)treatment of cells with cellulase and pectinase is mandatory
(iv)the hybrid protoplast contains characters of only one parental protoplast.

(a)

(i) and (iii)

(b)

(i) and (ii)

(c)

(iii) and (iv)

(d)

(ii) and (iii)