Q. No.While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant:
1. Bagging of female flower
2. Dusting of pollen on stigma
3. Emasculation
4. Collection of pollen
Polyethene glycol method is used for:
| 1. | gene transfer without a vector |
| 2. | biodiesel production |
| 3. | seedless fruit production |
| 4. | energy production from sewage |
1. Xanthomonas
2. Pseudomonas
3. Alternaria
4. Erwinia
| 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 |
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
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
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
The world's highly prized wool-yielding 'Pashmina' breed is:
1. Sheep
2. Goat
3. Goat-sheep cross
4. Kashmiri sheep-Afghan sheep cross
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
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