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How does a sporophyte become a gametophyte?
Diploid sporophyte cells undergo meiosis to produce haploid spores. Each spore goes through mitotic divisions to yield a multicellular, haploid gametophyte. Mitotic divisions within the gametophyte are required to produce the gametes.
What grows directly into a sporophyte?
Seeds are diploid, and can grow directly into a sporophyte.
On what structure does the sporophyte generation develop?
After fertilization, the diploid zygote develops into a mature sporophyte plant that arises from the gametophyte. In ferns, the sporophyte phase consists of the leafy fronds, sporangia, roots, and vascular tissue. The gametophyte phase consists of the small, heart-shaped plants or prothallia.
What is a sporophyte and gametophyte?
The multicellular diploid plant structure is called the sporophyte, which produces spores through meiotic (asexual) division. The multicellular haploid plant structure is called the gametophyte, which is formed from the spore and give rise to the haploid gametes.
Does a seed grow into a sporophyte?
Seeds and Pollen as an Evolutionary Adaptation to Dry Land Unlike bryophyte and fern spores (which are haploid cells dependent on moisture for rapid development of gametophytes ), seeds contain a diploid embryo that will germinate into a sporophyte.
How is sporophyte formed?
In the sporophyte phase a diploid (having two sets of chromosomes) plant body grows and eventually produces spores through meiosis. The union of two gametes during fertilization produces a diploid zygote, which divides mitotically to form a new sporophyte.
What is the meaning of Sporocyte?
sporocyte. / (ˈspɔːrəʊˌsaɪt, ˈspɒ-) / noun. a diploid cell that divides by meiosis to produce four haploid spores.
What process forms spores?
Spores are usually haploid and unicellular and are produced by meiosis in the sporophyte. Two gametes fuse to create a new sporophyte. This cycle is known as alternation of generations. Haploid spores produced by mitosis (known as mitospores) are used by many fungi for asexual reproduction.
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