LABORATORY REVIEW
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Water absorbs heat energy from leaves and evaporates as water vapour to give heating effect.
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Plants roots absorb water and mineral salts from soil.
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Produces a pulling force that moves the water and mineral salts continuously in the xylem vessels from the roots to all plant cells.
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Water absorbs heat energy from leaves and evaporates as water vapour to give cooling effect.
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Detailed explanation-1: -Transpiration helps in the conduction of water and minerals to different parts of the plants. Due to the continuous elimination of water from the plant body, there is a balance of water maintained within the plant. It maintains osmosis and keeps the cells rigid.
Detailed explanation-2: -Cools the surface of the leaves. Helps in growth and development. It controls the temperature of the plants. Allows the movement of minerals from the soil to different parts of the plant.
Detailed explanation-3: -Maintaining plant structure – transpiration helps in maintaining the turgidity in plants since young plants that do not have woody stems need water for their structural support. Ensuring the cooling of plant – the loss of water in the form of water vapour from plants helps the plant to cool down during hot days.
Detailed explanation-4: -Transpiration-the loss of water vapor to the atmosphere through stomata-is a passive process, meaning that metabolic energy in the form of ATP is not required for water movement.