transport in plants
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22 questions
| 🇬🇧 | 🇬🇧 |
| Which of the following helps in ascent of sap | Root pressure, transpiration anad capillarity |
| Water potential of pure water and its solution are | 0 and less than 1 |
| A botanist discovered a mutant plant that was unable to produce materials that form casparian strip. this plant would be | Unable to control amounts of water and solutes it absorbs |
| Water vapour comes out from the plant leaf through the stomatal opening. through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. | Both processes can happen together because the diffusion coefficient of water and CO2 is different |
| Which one gives the most valid and recent explanantion for stomatal movements? | Potassium influx and efflux |
| A column of water within xylem vessels of tall trees does not break under its weight because of | Tensile strength of water |
| Root pressure develops due to | Active absorption |
| The closure of lid of pitcher in a pitcher plant is due to | Paratonic movement |
| Potometer works on the principle of | Amount of water absorbed equals the amount transpired |
| Conversion of starch to organic acids is required for | Stomatal opening |
| At constant temperature, the rate of transpiration will be higher at | 1.5 km above sea level |
| In guard cells when sugar is convered into starch, the stomatal pore | Closes completely |
| Carbohydrates are commonly found as starch in plant storage organs. which properties of starch make it useful as a storage material | Chemically non reactive and osmotically inactive |