What is the similarity between gymnosperms and angiosperms?

Compared with the gametophytes of the bryophytes,the gametophytes of vascular plants are:

Which scientists conducted in-depth research in the field of plant classification?

How many orders does the series Inferae contain?

Read carefully the following statements:
$I.$ Funaria possesses unicellular and unbranched rhizoids.
$II.$ Gemmae are asexual buds, which originate from small receptacles called gemma cups.
$III.$ The Sphagnum plants have a magnificent property of retaining water.
$IV.$ Mosses along with lichens are the first organisms to colonise rocks.
Which of the statements given above are correct?

Primary development of male and female gametophytes takes place in the sporangia itself in