Q. No.Among the following edible fishes, which one is a marine fish having rich source of omega-3 fatty acids?
1. Mangur
2. Mrigala
3. Mackerel
4. Mystus
1. Mangur
2. Mrigala
3. Mackerel
4. Mystus
Pollen grains can be stored for several years in liquid nitrogen having a temperature of
1. - 196C
2. - 80C
3. - 120C
4. - 160C
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 of the following enhances or induces fusion of protoplasts?
1. Polyethylene glycol and sodium nitrate
2. IAA and kinetin
3. IAA and gibberellins
4. Sodium chloride and potassium chloride
Which part of the tobacco plant is infected by Meloidogyne incognita?
1. Root
2. Flower
3. Leaf
4. Stem
A true breeding plant is:
| 1. | Always homozygous recessive in its genetic constitution |
| 2. | One that is able to breed on its own |
| 3. | Produced due to cross-pollination among unrelated plants |
| 4. | Near homozygous and produces offspring of its kind |
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Interspecific hybridization is the mating of
1. more closely related individuals within same breed for 4-6 generations
2. animals within same breed without having common ancestors
3. two different related species
4. superior males and females of different breeds
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Homozygous purelines in cattle can be obtained by:
1. mating of related individuals of same breed.
2. mating of unrelated individuals of same breed.
3. mating of individuals of different breed.
4. mating of individuals of different species.
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The agricultural practice of breeding and raising livestock is called:
| 1. | Domestication | 2. | Breeding |
| 3. | Animal husbandry | 4. | Bio-fortification |
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A group of animals related by descent and similar in most characteristics like general appearance, features, size, configuration, etc., are said to belong to a:
| 1. | Variety | 2. | Species |
| 3. | Strain | 4. | Breed |
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