Question

45. During an excavation of soil, Pollen
fossils were retrieved from deepest
layer of soil.
The pollen grains
remained as fossils because
(A) Exine has spiny Ornamentation.
(B) The exine of pollen grains is
highly resistant to enzyme action.
(C) Pollen
grains
asexual
reproductive structures.
are
(D) The intine of pollen grains is
made up of pectin.​

Answer 1

Answer:

pollen grains asexual reproductive structures sre

Answer 2

During the excavation of soil, pollen fossils remained fossil because (B) The exine of pollen grains is  highly resistant to enzyme action.

• The exine pollen is immune to the movement against any of the enzymes.
• The hard outer layer is known as the exine consisting of a sporo - pollenin and is considered to be one of the most robust organic materials.
• It is highly resistant to degradation as well.