What is a vascular system? Plant biology
Veins in a leaf About 600 million years ago, the first plant cells evolved to be different from animal cells, and from earlier prokaryote cells, because they had a stiff [...]
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05, 2017
Veins in a leaf About 600 million years ago, the first plant cells evolved to be different from animal cells, and from earlier prokaryote cells, because they had a stiff [...]
