Megaspore — Free Biology Illustration

Biology

Megaspore

A single enlarged haploid plant spore shown in isolation, relatively large compared with a typical microspore or pollen grain. The spore is round to slightly oval, occasionally faintly tetrahedral, with a distinct outer wall that is usually thick and clearly defined, smooth to slightly textured or faintly ornamented, and may show a subtle aperture mark on one side. Inside is a dense to lightly granular pale cytoplasmic mass with one visible dark nucleus. Overall coloration is pale cream, light yellow, tan, golden-brown, or lightly greenish, with a translucent microscopic appearance and robust proportions.

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