Transpiration Welcome to your Transpiration 1. Most of the transpiration in tall trees occurs through Lenticels Bark Stomata Cuticle2. Transpiration pull will be maximum under which of the following conditions? Closed stomata, dry atmosphere and dry soil Open stomata, high humid atmosphere and dry soil Open stomata, high humid atmosphere and well irrigated soil Open stomata, dry atmosphere and moist soil3. Plants lose water by guttation when Soil is wet and and the atmosphere is humid Rate of transpiration is high Soil is wet and and the atmosphere is dry Soil is dry and and the atmosphere is dry4. With decrease in atmospheric pressure, the rate of transpiration will increase decrease rapidly decrease slowly remains the same5. In the mechanism of opening and closing of stomata, the important factor is The starch content of the cells The turgid and flaccid state of the guard cells The presence of Chloroplast in the guard cells The protein content of the cells6. Stomata open during the day and close at night because 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 cells Enzymes convert starch into sugar at elevated pH in night7. Guttation is the elimination of excess of water from plants through Hydathodes Wounds Stomata Lenticels8. If the rate of transpiration becomes more than the rate of photosynthesis, plants will Grow more vigorously because more energy will be available Stop growing and gradually die of starvation Continue to live, but will not be able to store food be killed instantly9. Transpiration is very low during the storms due to Low temperature during storms High velocity of wind None of the above Presence of moisture in the wind10. In hot summer days, plant cooling is due to Transport of water in plant Loss of liquid water Loss of water vapour from leaves Loss of water from entire plant11 out of 10Please fill in the comment box below.
