Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed:

1. recombinant DNA technology

2. transgenic mechanism

3. mutation breeding

4. gene therapy.

Subtopic:  Plant Breeding for Quality (OLD NCERT) |
 79%
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The term ‘totipotency’ refers to the capacity of a:

1. cell to generate the whole plant

2. bud to generate the whole plant

3. seed to germinate

4. cell to enlarge in size

Subtopic:  Plant Tissue Culture |
 93%
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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.
 
1. (i) and (iii) 2. (i) and (ii)
3. (i) and (iv) 4. (ii) and (iii)
Subtopic:  Plant Breeding for Quality (OLD NCERT) |
 65%
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The biggest constraint of plant breeding is:

1. availability of desirable gene in the crop and its wild relatives

2. infrastructure

3. trained manpower

4. transfer of genes from unrelated sources.

Subtopic:  Plant Breeding for Quality (OLD NCERT) |
 83%
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Micro-propagation is:

1. propagation of microbes in vitro

2. propagation of plants in vitro

3. propagation of cells in vitro

4. growing plants on a smaller scale

Subtopic:  Plant Breeding for Quality (OLD NCERT) |
 68%
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Protoplast is:

1. another name for protoplasm 2. an animal cell
3. a plant cell without a cell wall 4. a plant cell
Subtopic:  Plant Breeding & Its Steps (OLD NCERT) | Plant Breeding for Quality (OLD NCERT) |
 86%
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Which one of the following is a marine fish?

1. Rohu 2. Hilsa
3. Catla 4. Common Carp
 

Subtopic:  Animal Husbandry (OLD NCERT) |
 84%
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Which one of the following products of apiculture is used in cosmetics and polishes?

1. honey 2. propolis
3. wax 4. Royal jelly
Subtopic:  Animal Husbandry (OLD NCERT) |
 83%
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More than 70 per cent of livestock population is found in:

1. Denmark 2. India
3. China 4. India and China
Subtopic:  Animal Husbandry (OLD NCERT) |
 91%
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The agriculture sector of India employs about:

1. 50 percent of the population

2. 70 percent of the population

3. 30 percent of the population

4. 60 percent of the population.

Subtopic:  Plant Breeding & Its Steps (OLD NCERT) | Impact: Green Revolution (OLD NCERT) | Breeding for Disease Resistance (OLD NCERT) |
 64%
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