why in plant cells,vacuoles are filled with cell sap?name the substance present in the cell sap. write any one role played by the vacuole in some unicellular organisms
Answers
Answer:
Vacuoles are filled with cell sap to provide buoyancy and support to the cell. The substances present in the cell sap are sugars, salts, amino acids and water. In some unicellular organisms vacuoles play an important role in expelling excess water and some wastes from the cell.
Answer:
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Explanation:
Vacuoles are like storage bubbles which are found mostly in plant cells. They occupy most of the portion of plant cells. These are used for storage of food or water. They also store toxic metabolic by-products or end products of plant cells. Cell sap is the dilute fluid containing water, amino acids, glucose and salts. Vacuoles store the cell sap.
Protoplasm is a gel-like substance present in all cells. It is a colloid of water and the disperse particles present in them. These particles are proteins, lipids, carbohydrates.
Cell sap differs from protoplasm as it is the fluid present in vacuole bounded by tonoplast that is generally rich in by-products of metabolism or reserve materials which can be used by protoplasm.
Osmotic pressure and turgidity are maintained by vacuoles due to the presence of cell sap.
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