Thursday, November 29, 2007

How do plants drink?
Although plants can absorb a little water through their leaves, they get most of the water they need by drawing it up from the ground through their roots. The roots are in close contact with the particles of soil around them. Tiny rootlets connected to the roots extend into the soil, and these draw in moisture. If you pull up a plant, you can see the delicate white roots, but you cannot see the microscopic rootlets that absorb water. If a plant is pulled up, the rootlets are broken. As soon as they stop working, the plant starts to wilt.

Insect-eating plants
Some plants that grow in poor soil get the nutrients they need by trapping and digesting passing insect. Most produce and attractive scent or glistering drop that look like nectar to lure insect to their doom. Sticky glue or a pool of liquid keeps an insect in the trap while the plant closes and begins to digest it.

Tag :plants drink
Tag :eating plants

No comments: