Question

Good morning friends .
Can anyone give me the correct answer for this
How does sexual reproduction occurs in bryophytes?
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Answer 1

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Bryophytes have neither pollen nor flowers and rely on water to carry the male gametes (the sperm) to the female gametes (the eggs). The spore capsules are produced after the sperm have fertilized the eggs. Hence the spores are part of the sexual reproductive cycle.

Pyrrhobryum paramatense, gametophyte

click to enlarge

Entosthodon apophysata, a moss

The gametes are produced on what’s called the gametophyte. In mosses and leafy liverworts the stems and leaves make up the gametophyte. In hornworts and thallose liverworts the gametophyte is a flattish sheet click for photo. A spore capsule is part of the sporophyte, which develops from a fertilized egg. In some species the fertilized egg will produce just spore capsules whereas in others fertlized eggs will also produce a supporting stalk for the spore capsule. In the former the capsule is the whole sporophyte, whereas in the latter the stalk (called a seta) and the capsule make up the sporophyte. A sporophyte is always attached to a gametophyte, from which it draws nutrients while developing.

Answer 2

Answer:

here is your answer dear. ....

Explanation:

In bryophytes the process requires the production of male gametes (sperm), female gametes (eggs) and some means of getting the sperm to the eggs. The gametes are produced on the gametophytes. The sperm are produced within tiny, typically stalked, club-shaped structures called antheridia and you can also see bryophyte sperm referred to as antherozoids. The stalk anchors the antheridium to the gametophyte. Each antheridium produces numerous sperm. The eggs are produced in tiny, typically somewhat flask-like structures called archegonia. Each archegonium holds one egg (in a swollen section called the venter) and the sperm enter through the channel in the narrower, tubular section (or neck). On the side of the venter opposite the neck is the foot which anchors the archegonium to the gametophyte. In the early stages of archegonial development that channel does not exist, the area being filled with cells. At maturity the cells in the centre of the neck disintegrate to create the channel. The channel is filled with mucilage that results from the breaking down of the cells that initially occupied the channel.

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