11. Which of the following govern sporophytic self-incompatibility in Brassica?

A. Aegilops
B. Triticum
C. Both (a) and (b)
D. S alleles


Correct Answer: D. S alleles

12. Commercial sugarcane is heterozygous with germplasm from

A. 1-3 Saccharum species
B. 3-5 Saccharum species
C. 5-7 Saccharum species
D. 7-9 Saccharum species


Correct Answer: B. 3-5 Saccharum species

13. The intervention in the communication system of nematodes offers several possibilities of biocontrol. Which of the following(s) play(s) a very important role in the host recognition?

A. Protein
B. Lipid
C. Carbohydrate moiety
D. Minerals


Correct Answer: C. Carbohydrate moiety

14. The hybrid embryo can be rescued from damage/collapse by growing it

A. at low temperature
B. at low pH
C. at low water activity
D. in artificial medium


Correct Answer: D. in artificial medium

15. For an increased level of mannitol in transgenic tobacco plants which of the following gene is transferred?

A. Mannitol dehydrogenase
B. Mannitol synthease
C. Both (a) and (b)
D. Mannitol pyrophosphorylase


Correct Answer: A. Mannitol dehydrogenase

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