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    Pollen grains of mimosa flower, digital illustration. — Stock Photo
    Pollen grains of mimosa flower, digital illustration.
    Light micrograph of a plant stem cross section. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of a plant stem cross section. Haematoxylin and eosin stain.
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Coloured scanning electron micrograph of pollen grains from Verbena bonariensis perennial plant. — Stock Photo
    Coloured scanning electron micrograph of pollen grains from Verbena bonariensis perennial plant.
    Horse chestnut pollen grain — Stock Photo
    Horse chestnut pollen grain
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Close-up illustration of colored pollen grain of mimosa plant. — Stock Photo
    Close-up illustration of colored pollen grain of mimosa plant.
    Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow).
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Pollen grains of mimosa flower, digital illustration. — Stock Photo
    Pollen grains of mimosa flower, digital illustration.
    Cells undergoing mitosis — Stock Photo
    Cells undergoing mitosis
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Midrib of a tea leaf — Stock Photo
    Midrib of a tea leaf
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla). — Stock Photo
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla).
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Plant cells, 3d illustration — Stock Photo
    Plant cells, 3d illustration
    Plant cells, 3d illustration — Stock Photo
    Plant cells, 3d illustration
    Conductive vessel element in mountain mahogany wood (Cercocarpus sp), coloured scanning electron micrograph (SEM). — Stock Photo
    Conductive vessel element in mountain mahogany wood (Cercocarpus sp), coloured scanning electron micrograph (SEM).
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Colored scanning electron micrograph of starch grains in seed of legume. — Stock Photo
    Colored scanning electron micrograph of starch grains in seed of legume.
    Colored scanning electron micrograph of pollen grains from marigold flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from marigold flower.
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Angel trumpets pollen grain — Stock Photo
    Angel trumpets pollen grain
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem. — Stock Photo
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem.