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Mitochondria have their own DNA — evidence they were once independent bacteria absorbed by early cells.
Plant Kingdom
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Heterospory
Heterospory: Production of two types of spores - microspores and megaspores
Heterospory is the production of two distinct types of spores by plants: microspores (male) and megaspores (female).
Terms:
Microspores
Smaller spores that develop into male gametophytes
Megaspores
Larger spores that develop into female gametophytes
Heterospory is a significant evolutionary step in plants, leading to the development of seeds. It is observed in genera like Selaginella and Salvinia.
Common Use:
Understanding plant reproduction and evolution.
Evolution
Heterospory
Reproduction
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