Aerating openings formed in the bark through which exchange of gases takes place and water is lost in the form of vapours are___________?
Correct answer: C. Lenticels
- A. Hydathods
- B. Stomata
- C. Lenticels
- D. None of these
Explanation
Lenticels are aerating pores in the bark that allow oxygen and carbon dioxide exchange and permit some water loss as vapour. Students may choose stomata because stomata also exchange gases, but stomata are epidermal pores and lenticels are associated with bark.
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About Biological Importance of Water
Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.
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