Transport of materials in living things questions | form two Biology
(303) Question Category: Multiple choices Food conducting tissue in vascular plant is called
Answer / Solution C.[Phloem] |
(307) Question Category: Multiple choices The phase when the auricles contract to pump blood into ventricles is known as
Answer / Solution A [ Systole ] |
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(313) Question Category: Short answers Explain why plant cells do not burst in pure water Answer / Solution
Plant cells are surrounded by cellulose walls. When placed in pure water , plant cells take in water by osmosis just like animal cells, but plant cells do not burst because the cellulose cell walls control the amount of water that is taken in, by exerting a pressure called turgor pressure, as the cells absorb water. |
(314) Question Category: Short answers Explain why animal cells burst in pure water and shrivel up in a concetrated solution Answer / Solution The reason as to why animal cells burst in pure water is: When an animal cell is placed in pure water, water will pass into the cell by osmosis. This leads to the swelling of the cell. Since an animal cell have no cell wall to control the intake of water , the cell keep swelling until it bursts! |
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(408) Question Category: Multiple choices The best distinction between diastolic and systolic blood pressure is that
Answer / Solution d.[Diastolic blood pressure is lower than systolic plood pressure] |
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