Mutation breeding

1. Is the use of induced mutations in plant breeding to develop improved varieties.

2. Can be done only by physical mutagens.

3. Has led to the development of mung bean resistant to yellow mosaic virus (YMV) and

powdery mildew

4. Both 1. and 3.

Atlas 66 is a variety of :-

1. Wheat

2. Bhindi

3. Rice

4. Sugar cane

Agriculture contributes about _____ of India’s GDP and gives employment to _______ of the population

1. 15%, 18%

2. 33%, 62%

3. 62%, 33%

4. 62%, 70%

Somaclones are produced by

1. Micropropagation.

2. Mutation.

3. Polyploidy.

4. Hybridisation.

Which of the following in not the objective of bio fortification :-

1. Improvement of protein content and quality.
2. Increase oil content & quality
3. Reduction in micro nutrient and mineral content.
4. Improvement of vitamin content.

Find the correct match with respect to crop variety for their disease resistant 

   Column I                       Column II

(a) Pusa Komal                (i) Tobaccor mosaic virus

(b) Pusa Sadabahar         (ii) Black rot

(c) Pusa Shubhra             (iii) White rust

(d) Pusa Swarnim             (iv) Bacterial Blight

1. a(iv), b(i), c(ii), d(iii)
2. a(iv), b(i), c(iii), d(ii)
3. a(i), b(iv), c(ii), d(iii)
4. a(ii), b(iii), c(iv), d(i)

Plants can be made disease resistant through

1. Colchicine treatment

2. X-ray treatment

3. Hormone treatment

4. Breeding with wild relatives

Read the following statement and select the right choice

a. Semi-dwarf varieties, Jaya and Ratna were developed in IRRI, Phillippines.
b. Classical plant breeding involves crossing or hybridization of pure lines.
c. Saccharum barberi was originally grown in South India.
d. Genetic variability is the root of any breeding programme.

1. Only a is correct.

2. b and d are correct.

3. a, b and c are correct.

4. b, c and d are correct.

In wheat, stem sawfly unable to cause destruction of crop due to

1. Low nitrogen and sugar content
2. Hollow stem
3. Solid stem
4. Nectarless flowers