Plant Breeding

Q. Pusa komal is a disease resistant variety of cowpea resistant to ________.

1. hill bunt
2. black rot
3. bacterial blight
4. aphids

Q. Bacillus thuringiensis is a

1. Bacterium
2. Bioherbicide
3. Bio fertilizer
4. None of the above

Q. Which among the following was the result of Green Revolution in India?

1. Expansion of irrigation infrastructure
2. Distribution of synthetic fertilisers
3. Development of high yielding grain varieties
4. Distribution of pesticides

Q. The correct sequence of steps in breeding a new genetic variety of a crop is:
(a) Selection of parents
(b) Cross hybridisation of the selected parents
(c) Collection of variability
(d) Testing, release and commercialisation of new cultivars
(e) Selection and testing of superior recombinants

1. (a), (b), (c), (d), (e)
2. (e), (a), (b), (d), (c)
3. (c), (a), (b), (e), (d)
4. (c), (a), (b), (d), (e)

Q. All plants of a pure line have

1. Same genotype
2. Similar phenotype
3. Same phenotype and different genotype
4. Same genotype and drastically different phenotypes

Q. Choose the characteristic of a crop which is NOT desired for plant breeding.

1. Adaptability for all weather conditions
2. High-yielding plant varieties
3. Develop plants with low nutritional level
4. Disease-free plant varieties

Q. Purposeful manipulation of qualities in plants to create new varieties with desired characteristics is called plant breeding.

1. False
2. True

Q. All organisms are dependent upon plants directly or indirectly.

1. False
2. True

Q. Arrange the following in the correct sequence of steps in breeding a new genetic variety of a crop.

1. Release cultivar
2. Hybridisation
3. Gather variables
4. Testing
5. Select parents

Q. Artificial hybridisation is done by the process of self pollination.

1. False
2. True