Breeding of crops with high levels of minerals, vitamins, and proteins is called:
1. | somatic hybridization |
2. | biofortification |
3. | biomagnification |
4. | micropropagation |
Somaclones are obtained by:
1. tissue culture
2. plant breeding
3. irradiation
4. genetic engineering
In the cloning of cattle, a fertilized egg is taken out of the mother's womb and:
1. | the egg is divided into 4 pairs of cells which are implanted into the womb of other cows |
2. | in the eight-cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cows |
3. | in the eight-cell stage, the individual cells are separated under an electrical field for further development in cultural media |
4. | from this, up to eight identical twins can be produced |
In order to obtain virus-free plants through tissue culture the best method is:
1. protoplast culture
2. embryo rescue
3. anther culture
4. meristem culture
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 |
1. IAA
2. ethylene
3. gamma radiations
4. infrared radiations
1. | rice | 2. | wheat |
3. | bajra | 4. | maize |
Which part would be most suitable for raising virus-free plants for micro propagation?
1. Bark
2. Vascular tissue
3. Meristem
4. Node