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5
Describe the angiosperm life cycle (1 - 5).
1. Microsporangia in anthers produce pollen (microspores) by meoisis.
2. Microspores germinate, form 3-nucleate microgametophytes with 2 sperm cells.
3. Megasporangia in ovules produce megaspores by meoisis.
4. Megaspores develop into 8-nucleate megagametophytes with 1 egg cell.
5. Double fertilization produces an embryo in a seed (from ovule) in a fruit (from ovary)
2. Microspores germinate, form 3-nucleate microgametophytes with 2 sperm cells.
3. Megasporangia in ovules produce megaspores by meoisis.
4. Megaspores develop into 8-nucleate megagametophytes with 1 egg cell.
5. Double fertilization produces an embryo in a seed (from ovule) in a fruit (from ovary)
Tags: angiosperms, life cycles, megaspores, microspores
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Autor: zeestree
Oberthema: Medicine
Thema: Angiosperms
Schule / Uni: University of Hawaii at Manoa
Ort: Honolulu
Veröffentlicht: 19.04.2010