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Published on: 28/05/2021
QB365 Provides the HOT Question Papers for Class 12 Biology, and also provide the detail solution for each and every HOT Questions. HOT Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams
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.
The Indian Agricultral Research has released several varieties of crop plants.Name the three plants with their biofortification.
2.
How does MOET help in cattle breeding?
3.
Write down the difference between pisciculture and aquaculture.
4.
Name the Indian scient, whose efforts brought 'green revolution' in India.
5.
What are the disease resistence varities of Brassica and wheat?
6.
What is meant by micro-propagation?
7.
How does mutation breeding artificially occur in plants?
8.
250 g of micro-organism due to its high rate of biomass production can be expected to produce 25 tones of protein. Write scientific name of this organism. How can it decide the future of mankind in the space?
9.
MOET is a programme for heard improvement. Expand this term and arrange the following step in correct sequence.
a) Produce 6-8 egg.
b) A cow is administered hormones with FSH like activity.
c) Mating the animal with an elite bull.
d) Transferred to surrogate mothers.
e) Fertilized eggs at 8-32 cell stages are recovered non surgically.
10.
Following are the steps in a particular process. Name the process and fill in the steps that are given as blanks.

11.
Genetic variability is the root of any breeding program. How can these naturally occurring genetic variations be used for benefit to mankind and the biosphere in general.
12.
As the population is continuously increasing and land for agriculture is decreasing. So how we can overcome food scarcity problem. Suggest two measures.
13.
It is estimated that more than 70% of the world livestock population is in India and China. Yet they contribute only 25% of the world’s farm produce .What does it indicates. How can we improve it?
14.
How are two following varieties of sugarcane different from reach other?
(i) Saccharum Barberi
(ii) Saccharum officinarum
15.
It is easier to culture plants cells in vitro as compared to animal cells. Why?
1.
( )
Vit-A enriched carrot and spinach,protein enriched beans,Vitamin-C enriched bittergourd and mustard.
2.
( )
Successful production of hybrids are high, the herd size increased in a short time.
3.
( )
Pisciculture is the method of culture of fishes.Aquaculture is the culture of aquatic animals.
4.
( )
M.S. Swaminathan
5.
( )
Brassica-Pusa swarnim ,Wheat-Himgiri
6.
( )
Methods of producing plants by tissue culture.
7.
( )
Chemicals and gamma radiations
8.
( )
Methylophilus Methylotrophus. Less load of food on the space ship, production of food as and when required outside the dimensions of biosphere.
9.
( )
[ b,a,c,e,d ]
10.
( )
a) Evaluation and selection of parents
b) Selection and testing of superior recombinants.
11.
( )
Out breading-unrelated animals of a variety
Cross breading-between different breeds
Inter-specific hybridization between different species
12.
( )
Sea food fisheries
Use DNA modulation technique for better prospects in agriculture.
13.
( )
The per unit productivity is very low. So in addition to conventional practice of animal breeding & care, new technologies also have to be an applied.
14.
( )
(i) Saccharum Barberi grows in North India, has poor sugar contents and yield.
(ii) Saccharum officinarum grows in South India, has thicker stems, more content, and yield but cannot be grown in North India.
15.
( )
1. Plant cells retain the power of division for comparavely longer periods than animal cells.
2. Animal cells become mature just after the embryonic stage and hence cannot be cultured.
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