LABORATORY REVIEW
DIFFUSION AND OSMOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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movement of oxygen from alveoli into red blood cell
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movement of water across cell membrane
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plant root absorbing mineral ions from the soil
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uptake of water by the root hair of the plant
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Detailed explanation-1: -Example-transport of sugar, ions, proteins, large cells, etc. Mineral ions are absorbed by active transport. They are present in higher concentrations in the roots compared to the surrounding soil and are charged molecules. Calcium and magnesium are examples of ions required by plants for growth.
Detailed explanation-2: -The active transport of minerals in plants is defined as the process that involves the movement of molecules from a region of lower concentration to a region of higher concentration against the gradient with the use of external energy.
Detailed explanation-3: -Some examples of active transport include the uptake of glucose in the intestine of the human body and the uptake of minerals or ions into the root hair cells of plants.
Detailed explanation-4: -Answer and Explanation: Plants use their roots to acquire nutrients from the soil. Minerals must enter the roots through active transport while water enters roots through osmosis.
Detailed explanation-5: -Assertion :Ions are absorbed from the soil by active transport only. Reason: The proteins present in the membranes of root hair cells passively pump ions from the soil into the cytoplasm of the epidermal cells.