Interspecific hybridisation is the mating of:
1. | animals within the same breed without having common ancestors |
2. | two different related species |
3. | superior males and females of different breeds |
4. | more closely related individuals within the same breed for 4-6 generations |
Among the following edible fishes, which one is a marine fish having a rich source of omega-3 fatty acids?
1. Mystus
2. Mangur
3. Mrigala
4. Mackerel
Homozygous pure lines in cattle can be obtained by:
1. Mating of unrelated individuals of same breed.
2. Mating of individuals of different breed.
3. Mating of individuals of different species.
4. Mating of related individuals of same breed.
Outbreeding is an important strategy in animal husbandry because it:
1. | helps in the accumulation of superior genes. |
2. | is useful in producing pure lines of animals. |
3. | is useful in overcoming inbreeding depression. |
4. | exposes harmful recessive genes that are eliminated by selection. |
1. | cross-hybridisation among the selected parents |
2. | evaluation and selection of parents |
3. | germplasm collection |
4. | selection of superior recombinants |
To obtain virus-free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?
1. | Apical meristem only |
2. | Palisade parenchyma |
3. | Both apical and axillary meristems |
4. | Epidermis only |
Which part would be most suitable for raising virus-free plants for micro propagation?
1. Bark
2. Vascular tissue
3. Meristem
4. Node
1. | rice | 2. | wheat |
3. | bajra | 4. | maize |
1. IAA
2. ethylene
3. gamma radiations
4. infrared radiations