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Form 2 Biology: Gaseous Exchange

Institution: Secondary

Course: Education

Content Category: class notes

Posted By: mikeGreen

Document Type: PDF

Number of Pages: 12

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Summary

Download newly updated notes for form 2 biology, gaseous exchange. The notes are made from newly approved books and other materials by KICD and prepared by professionals.

GASEOUS EXCHANGE
? This is the process by which respiratory gases (oxygen and carbon IV Oxide) and water vapor are passed across the respiratory system

? Importance gaseous exchange
? It promotes oxygen intake for respiration in living organism
? It facilitates carbon IV oxide removal from the body. Accumulation of large amounts of carbon IV oxide in the tissues is toxic to cells.
? Enables green plants to obtain carbon IV Oxide for photosynthesis
? Excess water is expelled from the plants through transpiration. Higher animals expel it partly in its gaseous form i.e. water vapor in the exhaled air.


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