1. | It decreases the productivity of inbred population, after continuous inbreeding. |
2. | It decreases homozygosity. |
3. | It exposes harmful recessive genes that are eliminated by selection. |
4. | Elimination of less desirable genes and accumulation of superior genes takes place due to it. |
1. | Fertilised eggs at 4 to 6 cells - stages are recovered non-surgically from a super-ovulating cow and transferred to a surrogate mother. |
2. | It is used to increase herd size in a short time |
3. | Cow is administered with hormones to induce super-ovulation. |
4. | Super-ovulating cow is either mated with an elite bull or is artificially inseminated |
The term 'Blue Revolution' is related with :
1. Various crop plants and their by-products
2. Development of water reservoirs
3. Honey and its by-products
4. Fishery industry
Assertion (A): | Spirulina is a microbe that can be used for reducing environmental pollution. |
Reason (R): | Spirulina is a rich source of protein, carbohydrates, fats, minerals and vitamins. |
1. | Both (A) and (R) are correct and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are correct but (R) is not the correct explanation of (A). |
3. | (A) is correct but (R) is not correct. |
4. | (A) is not correct but (R) is correct. |
Select the incorrect statement with respect to inbreeding of animals.
1. | It is used for evolving pure lines in cattle. |
2. | It helps in accumulation of superior genes and elimination of less desirable genes. |
3. | It decreases homozygosity. |
4. | It exposes harmful recessive genes that are eliminated by selection. |
Assertion (A): | Spirulina is a microbe that can be used for reducing the environmental pollution. |
Reason (R): | Spirulina is a rich source of protein, carbohydrates, fats, minerals, and vitamins. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Match List - I with List - II
List - I | List - II |
(a) Protoplast fusion | (i) Totipotency |
(b) Plant tissue culture | (ii) Pomato |
(c) Meristem culture | (iii) Somaclones |
(d) Micropropagation | (iv) Virus free plants |
Choose the correct answer from the options given below:
(a) | (b) | (c) | (d) | |
1. | (iii) | (iv) | (i) | (ii) |
2. | (iv) | (iii) | (ii) | (i) |
3. | (iii) | (iv) | (ii) | (i) |
4. | (ii) | (i) | (iv) | (iii) |
Mutations in plant cells can be induced by:
1. Gamma rays
2. Zeatin
3. Kinetin
4. Infrared rays