Biology Test 20

Pashmina is a breed of goat. It is also called changthangi variety of northern temperate region and is largely found in Changthang region of Ladakh.

Karl von Fritsch discovered ‘waggle dance’ or language of the bees’ for the communication between worker honey bees. Apis dorsata is largest wild bee.

Mule is the product of interspecific hybridization. It is usually a sterile hybrid whose size is of a donkey and is a mare.

The queen bee copulates only once in its life cycle and sperms are stored in spermatheca. It can lay both unfertilized (leads to drone) eggs and fertilized (leads to worker and next queen) eggs.

Murrah (Murrah group), Mehsana (Gujarat group) and Jaffrabadi (Gujarat group) are the Indian buffalo breeds.

Foot and mouth disease and pox are the viral diseases of cattle.

Biofortification is a method of breeding crops to increase their nutritional value. This can be done either through conventional selective breeding, or through genetic engineering. Biofortification differs from ordinary fortification because it focuses on making plant foods more nutritious as the plants are growing, rather than having nutrients added to the foods when they are being processed.

In Rh-negative disorder, the mother forms antibodies that destroy the baby's incompatible blood cells.

Gamma rays (from cobalt 60) are generally used for induced mutation in crops plants.

Emasculation is the removal of stamens or anthers or killing of pollen grains of a flower without affecting the female reproductive organs. It is done to prevent self-fertilization.