Question 15
Compare and contrast
gametogenesis in plants and animals. And, be able to discuss the significance
of alternation of generations and its significance. [See page 238]
Gametogenesis in Animals (read pages 984-986)
Spermatogenesis is a continuous
process in humans.
There is evidence of at least
3 different kinds of sperm cells (egg-getters, blockers, killers).
Spermatogenesis produces four
sperm cells for every spermatogonial cell.
Oogenesis has long delays in
humans; all primary oocytes are present at the birth of each female.
Oogenesis has uneven division
of cytoplasm and produces 1 egg for every oogonial cell.
Alternation of
Generations in Plants (see Figure 13.5 on page 238)
What is the function of
alternation of generations in plants (all plants have it)?
Gametogenesis
in Plants (pages 598-599)
Plants make gametes by mitosis, how does this differ from animals?
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John C. Murphy |
Science |
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Phone: (815) 436-3200, ext. 2120 |
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jmurphy@learningcommunity202.org |
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