Sunflower Leaf
by Science Photo Library
Title
Sunflower Leaf
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Sunflower leaf. Light micrograph of a transverse section through the midrib of a sunflower (Helianthus annuus) leaf. The upper and lower epidermis on the surfaces of the leaf are blue. Under the upper epidermis are palisade cells (yellow), which contain chloroplasts, the site of photosynthesis. Within the midrib is a ring of vascular bundles, composed of xylem (red) and phloem (dark blue) cells, which transport water and carbohydrates around the plant respectively. Magnification: x100 when printed at 10 centimetres wide.
Uploaded
November 8th, 2019
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