Gymnosperms

Gymnosperms versus Angiosperms 0:51
Phylogenetic placement 2:16
Characteristics of the Vascular Plants
Vascular cambium 3:48
The seed 13:19
Heterospory 20:04
Endospory 25:21
Pollen 26:28
Ovule 28:04
Pollen tube 33:44
Fertilization 35:07
Sections of ovules and seeds 39:09
Adaptive significance of the seed 43:14
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