Question

Q.2 Answer in one sentence. (20M)
1) Why would any pollen grains can remain as fossil?
2) What is meant by cryptoorchidism?​

Answer 1

1)The presence of sporopollenin causes them to be well-preserved. Pollen grains have an evident two-layered wall wherein exine is the exterior hard outer layer composed of sporopollenin. There is no enzyme known so far which can degrade sporopollenin. ...

2)A condition in which one or both of the testes fail to descend from the abdomen into the scrotum.

Answer 2

Answer:

1. The presence of sporopollenin causes them to be well-preserved. Pollen grains have an evident two-layered wall wherein exine is the exterior hard outer layer composed of sporopollenin. This is one of the most resistant organic materials that is known. It can tolerate extreme high temperatures and strong alkali and acids. There is no enzyme known so far which can degrade sporopollenin.

2. A condition in which one or both testicles fail to move from the abdomen, where they develop before birth, down into the scrotum. Boys who have had cryptorchidism that was not corrected in early childhood are at increased risk for developing cancer of the testicles. Also known as undescended testicles.