Which one of the following causes crown gall disease

Micropropagation is

Assertion : Cattle breeds can be improved by superovulaton and embryo transplantaion.

Reason : Superovulation in high milk-yielding cows is induced by hormonal injection.

If the source is opposite to the direction of sun, then honey bee will convey the direction by

Which of the following is the pair of biofertilizers ?

Which of the following statements is not true about somatic embryogenesis?