Q. No.Match the following columns and choose the correct option.
1. A-5 B-4 C-1 D-2
2. A-5 B-4 C-1 D-3
3. A-4 B-2 C-3 D-1
4. A-1 B-2 C-4 D-5
Select the incorrect statement:
| 1. | Inbreeding helps in the accumulation of superior genes and the elimination of undesirable genes |
| 2. | Inbreeding increases homozygosity |
| 3. | Inbreeding is essential to evolve pure lines in any animal |
| 4. | Inbreeding selects harmful recessive genes that reduce fertility and productivity |
The world's highly prized wool-yielding 'Pashmina' breed is:
1. Sheep
2. Goat
3. Goat-sheep cross
4. Kashmiri sheep-Afghan sheep cross
In maize, hybrid vigour is exploited by:
1. bombarding the protoplast with DNA
2. crossing of two inbred parental lines
3. harvesting seeds from the most productive plants
4. inducing mutations
Crop plants grown in monoculture are:
1. low in yield
2. free from intraspecific competition
3. characterized by a poor root system
4. highly prone to pests
Which one of the following is being utilized as a source of bio-diesel in the Indian countryside?
1. Euphorbia
2. Beetroot
3. Sugarcane
4. Pongamia
| 1. | haploids are reproductively more stable than diploids |
| 2. | mutagens penetrate in haploids more effectively than in diploids |
| 3. | haploids are more abundant in nature than diploids |
| 4. | all mutations, whether dominant or recessive are expressed in haploids |
1. Xanthomonas
2. Pseudomonas
3. Alternaria
4. Erwinia
Polyethene glycol method is used for:
1. gene transfer without a vector
2. biodiesel production
3. seedless fruit production
4. energy production from sewage
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