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Plants - Coggle Diagram
Plants
Photosynthesis
Photosynthesis is the process by which certain organisms turn carbon dioxide and water in to oxygen and glucose using energy from the sun. The organism produces food for itself(glucose).
The carbon dioxide diffuses into to photosynthesising plants through stoma underneath the leaf. Water is absorbed from the soil and is carried up the plants stem. Oxygen diffuses out of the stoma and back into the atmosphere and the glucose is stored in the plant
Leaves
The leaves are adapted for photosynthesis in 4 different ways: they have a large surface area, they have lots of chloroplasts making them green, they have veins and they have stoma
By having a large surface area, the leaves can absorb as much sunlight as possible. They are also thin making them better for diffusion.
Photosynthesis occurs in the chlorophyll inside chloroplasts in the plant cells. Chlorophyll is green, so green leaves have lots of chlorophyll making them extremely efficient at photosynthesis
Plants have small holes called stoma underneath them. Carbon dioxide diffuses in and oxygen diffuses out. The stoma close at night as there is no sun to carry out photosynthesis.
Plants have veins called phloem and xylem. Xylem carry water from the roots to the leaf and phloem carry glucose.
Structure
of leaves.
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They also have palisade cells underneath the waxy layer. These have chlorophyll - most of the plant's photosynthesis occurs here.
There is also a spongey layer which allows the carbon dioxide, oxygen and water to flow around the plant
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