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Home > All Images > 1997 > February > 7 Feb 1997

Images Dated 7th February 1997

Choose from 15 pictures in our Images Dated 7th February 1997 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Stomata on epidermis of rose leaf Featured 7 Feb 1997 Image

Stomata on epidermis of rose leaf

Stomata on a rose leaf. Coloured scanning electron micrograph (SEM) of the lower leaf surface of a Garden Rose Rosa sp., showing stomata. Epidermal cells (green) cover the leaf surface. Scattered on the epidermis are stomata (singular: stoma), tiny pores each of which is bordered by two kidney- shaped guard cells. The stoma at lower left is open. Guard cells serve to open and close each stoma: opening the pore allows gases to be exchanged by leaf tissues during photosynthesis; and closing the pore at night or during dry periods prevents water loss. In the rose, more stomata occur on the underside of leaves. Magnification: x270 at 6x4.5cm size. Magnification: x750 at 6x4.5 inch size