Question

Importance of diffusion of gases and solutes

Answer 1

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Importance of diffusion of gases and solutes


Diffusion is the net movement of molecules from a region of their higher concentration to a region of their lower concentration down a concentration gradient, as a result of their random movement. Describe the importance of diffusion of gases and solutes and of water as a solvent.

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Answer 2

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Importance of gaseous and solute diffusion

Diffusion helps living organisms to:

→ obtain many of their requirements

→ get rid of many of their waste products

→ gas exchange for respiration

Examples :-

✔ CO2 uses by plants for photosynthesis is diffused from the air into the leaves, through the stomata (pores at the surface of leaves). There is a lower concentration of CO2 inside the leaf, as the cells are using it up.

✔ O2 (waste product of photosynthesis diffused out in the same way).

✔ Flowering plants use diffusion to attract pollinators like bees.

✔ Some of the products of digestion are absorbed from the ileum of mammals by diffusion.

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