Which of the given statements are correct for artificial hybridisation?
A. It is non-crossing experiment, which prevents the contamination of unwanted pollen grains on stigma.
B. This technique is achieved by emasculation and bagging.
C. This technique was used by Mendel to study genetics in Pisum sativum.
D. Plant breeder does not employ this approach for crop improvement programme.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → B and C only
Artificial hybridisation is the planned crossing of chosen parents. It is done by hand so that only the pollen that the breeder wants reaches the stigma.
(A) It is non-crossing experiment, which prevents the contamination of unwanted pollen grains on stigma. — Incorrect. Artificial hybridisation is a crossing experiment, because two different parents are crossed. What keeps unwanted pollen away from the stigma is the bagging step used in it.
(B) This technique is achieved by emasculation and bagging. — Correct. In emasculation the anthers are removed from the flower bud before they burst. In bagging the flower is covered with a bag, so that no unwanted pollen can reach the stigma.
(C) This technique was used by Mendel to study genetics in Pisum sativum. — Correct. Mendel crossed garden pea plants, Pisum sativum, by hand to study the inheritance of characters such as tall and dwarf.
(D) Plant breeder does not employ this approach for crop improvement programme. — Incorrect. It is one of the major approaches that plant breeders use for crop improvement. They cross different varieties to combine good characters.
NCERT Extract:
Pollination – …
