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megaspore
[ meg-uh-spawr, -spohr ]
noun
, Botany.
- the larger of the two kinds of spores characteristically produced by seed plants and a few fern allies, developing into a female gametophyte. Compare microspore.
- the embryo sac of a flowering plant.
megaspore
/ ˈmɛɡəˌspɔː /
noun
- Also calledmacrospore the larger of the two types of spore produced by some spore-bearing plants, which develops into the female gametophyte Compare microspore
- the cell in flowering plants that gives rise to the embryo sac
megaspore
/ mĕg′ə-spôr /
- One of the two types of haploid spores produced by a heterosporous plant. Megaspores develop into female gametophytes and are usually larger than microspores.
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Derived Forms
- ˌmegaˈsporic, adjective
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Other Words From
- meg·a·spor·ic [meg-, uh, -, spawr, -ik, -, spor, -], adjective
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Word History and Origins
Origin of megaspore1
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Example Sentences
In Welwitschia also the megaspore is filled with prothallus-tissue, but single egg-cells take the place of archegonia.
From Project Gutenberg
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