On the lower half of the leaf are spongy mesophyll cells. These have air spaces between them to let gases flow. The stomata - tiny openings or pores – allow gases such as carbon dioxide and ...

A microscope image shows the surface of a Kapur Paya fossil leaf. Tiny pores called stomata and the outer skin cells of the ...

Everything about a plant’s life is affected by its leaves. These powerhouses are the sugar factories of botany! Leaves have amazing mechanisms for sustaining the plant’s life, as well as their vital ...

It does this through stomata. These are tiny holes in the leaf surface that can be opened and sealed shut using special 'guard' cells. If we can find out exactly how stomatal index relates to these ...

A colorized electron microscope image of a tomato leaf stoma. Credit ... a type of organelle found in plant cells. While ...

Despite this dependence, plants retain less than 5% of the water absorbed by roots for cell expansion and plant ... water enters leaves via petiole (i.e., the leaf stalk) xylem that branches ...