Transpiration Welcome to your Transpiration 1. In the mechanism of opening and closing of stomata, the important factor is The turgid and flaccid state of the guard cells The protein content of the cells The presence of Chloroplast in the guard cells The starch content of the cells2. Stomata open during the day and close at night because Enzymes convert starch into sugar at elevated pH in night Photosynthesis occurs during day time only Loss of sugar increases osmotic concentration of the cell sap Loss of starch in day time raises OP of subsidiary cells3. Plants lose water by guttation when Soil is wet and and the atmosphere is dry Soil is dry and and the atmosphere is dry Rate of transpiration is high Soil is wet and and the atmosphere is humid4. If the rate of transpiration becomes more than the rate of photosynthesis, plants will Grow more vigorously because more energy will be available Continue to live, but will not be able to store food be killed instantly Stop growing and gradually die of starvation5. Transpiration pull will be maximum under which of the following conditions? Open stomata, dry atmosphere and moist soil Closed stomata, dry atmosphere and dry soil Open stomata, high humid atmosphere and well irrigated soil Open stomata, high humid atmosphere and dry soil6. In hot summer days, plant cooling is due to Loss of water vapour from leaves Loss of water from entire plant Loss of liquid water Transport of water in plant7. With decrease in atmospheric pressure, the rate of transpiration will remains the same increase decrease slowly decrease rapidly8. Transpiration is very low during the storms due to High velocity of wind None of the above Low temperature during storms Presence of moisture in the wind9. Most of the transpiration in tall trees occurs through Cuticle Lenticels Stomata Bark10. Guttation is the elimination of excess of water from plants through Wounds Lenticels Stomata Hydathodes11 out of 10Please fill in the comment box below.
