Do spores undergo mitosis?
Haploid (1n) spores germinate and undergo mitosis to produce a multicellular gametophyte (1n). Specialized cells of the gametophyte undergo mitosis to produce sperm and egg cells (1n), which combine in fertilization to make a zygote (2n).
Can spores be produced asexually?
Asexual spores are formed after mitosis (mitospores) without the involvement of meiosis. Fungi produce an enormous variety of asexual spores. Some species can produce several types of such spores.
Are spores produced by mitosis or meiosis?
Spores are usually haploid and unicellular and are produced by meiosis in the sporophyte. Once conditions are favorable, the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which will eventually go on to produce gametes.
Which organism does not reproduce by spores?
Amoeba, Paramaecuim, Plasmodium, Yeast, Hydra spyrogyra are not produced by spore formation.
What do spores need growing?
Spore germination requires the presence of water and oxygen and is characterized by rapid swelling as a result of hydration.
What is spore formation?
Spore formation is a form of reproduction in which the reproductive bodies called the spores are present in a sac called the sporangia. Once these spores mature the sporangia burst and these matured spores reach different areas by air, wind and water.
How is a seed like a spore?
Comparison Table Between Seeds and Spores. The ripened ovules in a flowering plant is known as a seed. The reproductive cells that are responsible for developing into a new plant or organism without any fusion with another reproductive cell are known as spores.