learn biology (class-XI)

Biology is the Gateway to become a Doctor
“Stetho-scope” is the only Jwellery that can not be Earned by Money. It can only be Earned by Passion and Hard-work. Stetho-scope is a device to hear heart-beat or palpipation of heart.

Every day, every hour, every second one of the most important events in life is going on in your body—cells are dividing.
When cells divide, they make new cells. A single cell divides to make two cells and these two cells then divide to make four cells, and so on. We call this process “Cell Division” or “Cell reproduction,” because new cells are formed when old cells divide.
The ability of cells to divide is unique for living organisms.

Transpiration is the loss of water in the form of water vapor from aerial parts of plants mainly through the stomata of leaves. Stomatal openings are necessary to admit carbon dioxide to the leaf interior and to allow oxygen to escape during photosynthesis.
Transpiration is a necessary Evil.
Transpiration was first measured by Stephen Hales. He found that transpiration occurred from the leaves and that this process encouraged a continuous upward flow of water and dissolved nutrients from the roots. Modern research has shown that as much as 99 percent of the water taken in by the roots of a plant is released into the air as water vapor.