What is meaning of alternation of generation in bryophytes?

Answer 1

All plants reproduce through alternating generations. Nowhere is this more apparent than in the mosses. The first generation, the gametophyte, forms the green leafy structure we ordinarily associate with moss. It produces a sperm and an egg (the gametes) which unite, when conditions are right, to grow into the next generation: the sporophyte or spore-bearing structure.
The moss sporophyte is typically a capsule growing on the end of a stalk called the seta. The sporophyte contains no clorophyl of its own: it grows parasitically on its gametophyte mother. As the sporophyte dries out, the capsule release spores which will grow into a new generation of gametophytes, if they germinate.

Mosses, the most common, diverse and advanced brypophytes, are categorized into three classes: Peat Mosses (Sphagnopsida), Granite Mosses (Andreaopsida), and "True" Mosses (Bryopsida or Musci).

So basically, two different types of reproductives.

another way of stating is the haploid and diploid - gametophyte (gamete plant) is the haploid generation and produces gametes by mitosis.. and the Sporophyte (spore plant) is the diploid and produces spores by meiosis - both in their haploid stages, however (just read it again, it may seem confusing at first.. think abotu it hard for a sec, you will get it). And to give you the definition of haploid and diploid.... haploid is one complete set of chromosomes (half of the diploid) the diploid is having a pair of chromosomes. For instance - one of our sex cells in haploid, when they unite, they double forming the diploid.

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Answer 2

All plants reproduce through alternating generations. Nowhere is this more apparent than in the mosses. The first generation, the gametophyte, forms the green leafy structure we ordinarily associate with moss. It produces a sperm and an egg (the gametes) which unite, when conditions are right, to grow into the next generation: the sporophyte or spore-bearing structure.
The moss sporophyte is typically a capsule growing on the end of a stalk called the seta. The sporophyte contains no clorophyl of its own: it grows parasitically on its gametophyte mother. As the sporophyte dries out, the capsule release spores which will grow into a new generation of gametophytes, if they germinate.

Answer 3

All plants passed through two generations in there life.
1.Gametophytic generation(produce gametes,male and female)
2.Sporophytic generation(produce spores)
In the same way bryophytes alse show this type of life cycle.
Gametophytic generation produces male and female gametes.These gametes unite to form zygote after fertalization.This zygote change into zygospore which grow into sporophyte which is called sporophyte generation.In this sporophyte spores are produced which germinate to produce gametophyte generation. This gametophyte generation again produce sporophyte generation.In this way both generations alternate each other and this alternation is called Alternation of generation.

Answer 4

In plant kingdom, the life cycle is completed in two generations-1.sporophytic and 2.gametophytic.The sequential alternation of sporophytic generation with gametophytic generation is the alternation of generation.Its the same with the bryophytes i.e. the sporophytic generation alternates with the gametophytic generation.

Answer 5

bryophytes have two generation in their life cycle.Sporophyte and Gametophyte. these two stages they alternate with each other which is known as alternation of generation.

Answer 6

The Gametophyte generation (haploid) produces haploid gametes in gametangia by mitosis. The gametes fuse and form a diploid zygote. The diploid zygote divides by mitosis and becomes the sporophyte generation, which is diploid. The sporphyte produces haploid spores in the sporangia, which divide by mitosis to become the gametophyte. Gametophyte (n) -> gametes (n) -> zygote (2n) -> sporophyte (2n) -> spores(n) -> gametophyte (n) Remember, gametes can only fuse and spores can only divide by mitosis.