Plant behavior may seem rather boring compared with the frenetic excesses of animals. Yet the lives of our vegetable friends, ...

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 ...

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 ...

Every time the temperature drops, a cloud passes overhead, or the sun sets, a plant makes a choice: Keep its microscopic ...

A colorized electron microscope image of a tomato leaf stoma. Credit ... a type of organelle found in plant cells. While these resemble the mitochondria found in animal cells, chloroplasts ...