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Pollen on stigmata - mallow (Malva neglecta)
A pollen grain s size shape and texture are species-specific adaptations to dispersal mechanisms stigma morphology and environmental conditions All are morphological characters that can be useful in phylogenetic studies ...
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Life cycle of a moss (Polytrichum)
The leafy green part of a moss is the haploid gametophyte The diploid sporophyte has a stalk and a capsule sporangium It is not photosynthetic Haploid spores form by meiosis ...
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Anatomy of a seed. Left, corn (Zea Mays), a monocot; right, pea (Pisum sativum), a eudicot
An embryonic plant forms as part of a seed The embryonic shoot plumule is separated from the embryonic root radicle by a section of stem hypocotyl As the seed matures ...
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Root nodule development.
Nodule development involves a series of chemical signals sent back and forth between rhizobia and their host plants Legumes start this exchange by secreting particular flavonoid compounds from their roots ...
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