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
Tags: Angiosperms
Schlagwörter Karten:
Alle Karten (6)
angiosperms (6)
characteristics (2)
classes (1)
cotyledons (1)
cretaceous (1)
dicots (1)
integuments (1)
life cycles (1)
megaspores (1)
microspores (1)
monocots (1)
seed coat (1)
seeds (1)
