91Ó°ÊÓ

Assertion: Shoot-tip culture is used to raise virus-free clones. Reason: Other explants can equally give rise to virus -free clones

Assertion: Hissardale is a new breed of sheep. Reason: Developed by crossing between Merino ewes and Bikaneri rams.

Assertion: Multiplication of plants in in vitro condition from the explants is called micropropagation. Reason: Micropropagation occurs either in the form of multiple shoot formation or somatic embryos.

Assertion: Beeswax is an animal product produced by honeybee. Reason: Honey contains only sugar, nothing else.

Assertion: Cattle breeds can be improved by superovulaton and embryo transplantation. Reason: Superovulation in high milk-yielding cows is induced by hormonal injection

Assertion: Pomato is not available commercially. Reason: Pomato did not have all the desired combination of characteristics for its commercial utilization.

Assertion: Atlas 66 is used as a donor for improving cultivated wheat. Reason: Atlas 66 is protein rich wheat variety.

Assertion: Some maize varieties are resistant to maize stem borer. Reason: They contain high aspartic acid, low nitrogen and low sugar content.

Assertion: Some cotton varieties do not attract bollworms. Reason: These cotton varieties are nectar less and posses smooth leaves.

Assertion: Wild relatives of several plants are useful to us. Reason: Wild relative posses certain resistant characters which are useful in plant breeding.