BIOL 2102 Life Cycles
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17 Terms
What is alternation of generations?
Life cycle in plants and some algae where multicellular haploid (gametophyte) and diploid (sporophyte) stages alternate between generations.
What is a sporophyte?
A multicellular diploid (2n) stage that produces haploid spores by meiosis.
What is the ploidy of the sporophyte?
Diploid (2n)
What does the sporophyte produce?
Haploid spores
How are spores produced in the sporophyte?
By meiosis
What is a gametophyte?
A multicellular haploid (n) stage that produces gametes.
What is the ploidy of the gametophyte?
Haploid (n)
What does the gametophyte produce?
Gametes (sperm and egg)
How are gametes produced in the gametophyte?
By mitosis
What happens during fertilization in alternation of generations?
Haploid gametes fuse to form a diploid zygote.
What does the zygote develop into?
A diploid sporophyte through mitosis
Which life stage is dominant in non-vascular plants?
Gametophyte (haploid)
Which life stage is dominant in seedless vascular plants?
Sporophyte (diploid)
Which life stage is dominant in seed plants?
Sporophyte (diploid)
Draw Animal life cycle
Draw Plant life cycle
Draw Fungi Life Cycle
