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Unformatted text preview: • Microspores → pollen grains → pollen tube (male gametophytes) → sperms c) Ovule = It consists of megasporangium, megaspore, and protective integuments d) Pollination =Transfer of pollen to the part of a seed plant containing the ovules 3) Generalized Life Cycle (Pine Trees) – Figure 1 <Figure 1> Life Cycles of Pine Tree...
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- Fall '11
- Pinophyta, pine tree, Male gametophytes, Microspores pollen grains