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Gas exchange organs of plants

Specify the main gas exchange organs of plants? Explain how this process is generally carried out?

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While covering of the leaves and of the primary structure of stem gas exchange is formed through the cuticle and pores of the epidermis. In covering of secondary structure of stem of the woody plants exchange of gas is done through the lenticels of periderm (small breaches of the cork). The gas exchange in the plants is carried out through simple diffusion.

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