Leaves could conduct photosynthesis, take in carbon dioxide and produce oxygen. Leaves of some plants could even take in poisonous gases such as carbon dioxide, monoxide and chlorine, making air fresher.
As is proved by scientists, 1 tons of leaves could take in 10-30 kilogram carbon dioxide and chlorine. Each leave is a small factory, continually providing energy for plants, as well as providing oxygen essential for human life. It could be said that there would be no life on earth if there is no photosynthesis by leaves. Besides, leaves also conduct transpiration。
The major functions of green leaves are as following:
- It is the source of nutrients and fertilizer
- It is the most important industrial raw materials
- Their medical use could not be neglected
- Leaves could be made as instrument.
Have a Think
Leaves is the most important organ to ( )
A. absorb water B. dehydration C. photosynthesis