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单词 megaspore
释义

megaspore

/ˈmɛɡəspɔː /
noun Botany
The larger of the two kinds of spores produced by some ferns. Compare with microspore.Both of these genera are heterosporous, meaning that each species produces two distinctly different types of spores: microspores and megaspores....
  • They have male spores called microspores and female spores called megaspores.
  • Their heterosporous life cycle (including both megaspores and microspores) is likely to be an adaptation to their aquatic habit.
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更新时间:2024/11/12 8:51:09