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True ...
no
Some types of algae that show a distinct alternation of generations are members of the green algae group, such as Ulva and Spirogyra. These algae have a haploid gametophyte generation and a diploid sporophyte generation. The gametophyte generation produces haploid gametes that fuse to form a diploid zygote, which develops into the sporophyte generation that produces haploid spores.
Parents are also diploid, only gametes are haploid (at least, if we are talking about animal species; some plants have alternating generations, which have both haploid and diploid adults).
in gerneral haploid
haploid, diploid, and alternation of generations
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diploid sporophyte and a haploid gametophyte
Human beings do exhibit an alternation of generations, but the haploid phase is extremely deemphasized while the diploid phase is overwhelmingly dominant. The haploid phase in humans that results from meiosis is restricted to only one cell, either an egg in the female or a sperm in the male. There is never a multicellular haploid structure as there usually are in plants. If such a multicellular haploid structure is required for a true alternation of generations, then humans do not exhibit alternation of generations. The human organism grows by mitosis (the diploid phase) only after fertilization. A plant sporophyte is diploid and it produces spores by meiosis. Humans, like plant sporophytes, are diploid and make haploid gametes by meiosis.
Plants exhibit alternation of generations that includes both diploid and haploid multicellular stages.The multicellular diploid stage is called the sporophyte and haploid stage is called gametophyte.
no
alternation of generations
Some types of algae that show a distinct alternation of generations are members of the green algae group, such as Ulva and Spirogyra. These algae have a haploid gametophyte generation and a diploid sporophyte generation. The gametophyte generation produces haploid gametes that fuse to form a diploid zygote, which develops into the sporophyte generation that produces haploid spores.
Alternation of generation refers to the life cycles of organisms that alternate between a haploid form that produces gametes that undergo sexual reproduction and a diploid form that produces spores that give rise to the haploid form.
Plants have an alternation of generations when they are in the gametophyte stage or the sporophyte stage. Gametes, which is haploid, or spores, which are diploid. Seedless vascular plants can be dominated by a haploid gametophyte stage where they are most of the time.
gametes
An alternation-of-generations life cycle is a reproductive strategy where an organism alternates between a multicellular diploid stage (sporophyte) and a multicellular haploid stage (gametophyte) in its life cycle. This cycle enables the organism to undergo both sexual and asexual reproduction at different stages.