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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
Questions + Answers key
Take MCQ Biology Test1.
Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?
Thick stem, long internodes, high sugar content and disease resistant.
Thick stem, high sugar content and profuse flowering.
Thick stem, short internodes, high sugar content, disease resistant.
Thick stem, low sugar content, disease resistant.
2.
33% India's Gross Domestic Product comes from
Industry
Agriculture
Export
Smallscale cottage industry
3.
The agriculture sector of India employs
60% of the population
70% of the population
30% of the population
62% of the population
4.
More than 70% of livestock population is in :
Denmark
India
China
India and China
5.
To isolate protoplast, one needs :
pectinase
cellulase
both pectinase and cellulase
chitinase
6.
protoplast is:
another name for protoplasm
an animal cells
a plant cell without cell wall
a plant cell
7.
Micro-propagation is :
propagation of microbes in vitro
propagation of plants in vitro
propagation of cells in vitro
growing plants on smaller scale
8.
Lysine and tryptophan are :
proteins
non-essential amino acids
essential amino acids
aromatic and no acids
9.
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.
(i) and (iii)
(i) and (ii)
(iii) and (iv)
(ii) and (iii)
10.
The term 'totipotency' refers to the capacity of a:
Cell to generate whole plant
bud to generate whole plant
seed to germinate
cell to enlarge in size
1.
(a)
Thick stem, long internodes, high sugar content and disease resistant.
2.
(b)
Agriculture
3.
(d)
62% of the population
4.
(d)
India and China
5.
(c)
both pectinase and cellulase
6.
(c)
a plant cell without cell wall
7.
(b)
propagation of plants in vitro
8.
(c)
essential amino acids
9.
(d)
(ii) and (iii)
10.
(a)
Cell to generate whole plant
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