Flowers and fruits are used by angiosperms to reproduce, while gymnosperms have unenclosed or "Naked" seeds on the surface of leaves or as cones
<h2>Answer:</h2>
The option D is correct.
<u>B cells are memory producing cells.</u>
<h3>Explanation:</h3>
As B cells are the specific receptor cell, after immunity to certain infection of the foreign particle, there is a function of acquired immunity is the protection of the body from that particular infection for the whole life which is done by <u>memory cells of B lymphatics.</u>
Its important because they produce offspring. Without any offspring the species would slowly die off and become extinct.
Teh answer is c. The human skin cell.
