An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow :
(a) Name the process being studied.
(b) Explain the process named above in (a) .
(c) Why was the pot covered with a plastic sheet ?
(d) Suggest a suitable control for this experiment.
(e) Mention two ways in which this process is beneficial to plants.
(f) List three adaptations in plants to reduce the above mentioned process.
An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow :
(a) Name the process being studied.
(b) Explain the process named above in (a) .
(c) Why was the pot covered with a plastic sheet ?
(d) Suggest a suitable control for this experiment.
(e) Mention two ways in which this process is beneficial to plants.
(f) List three adaptations in plants to reduce the above mentioned process.
a)-Transpiration
b)-Transpiration is the evaporation of water from plants. It occurs chiefly at the leaves while their stomata are open for the passage of CO2 and O2 during photosynthesis. Discussion of gas exchange in leaves.
c)-The pot covered with a plastic sheet so that the water vapour condenses on it and does not escape in the atmosphere.
d)-Apparatus without a plant.
e)-Two ways in which this process is beneficial to plants
It has a cooling effect
It builds up the transpiration pull which is responssible for upward movement of water.
f)-Three adaptations in plants to reduce the above mentioned process
- sunken stomata.
- leaves reduced to spines.
- stomata on the lower surface of the leaves that is the ventral side of the leaves..
a)-Transpiration
b)-Transpiration is the evaporation of water from plants. It occurs chiefly at the leaves while their stomata are open for the passage of CO2 and O2 during photosynthesis. Discussion of gas exchange in leaves.
c)-The pot covered with a plastic sheet so that the water vapour condenses on it and does not escape in the atmosphere.
d)-Apparatus without a plant.
e)-Two ways in which this process is beneficial to plants
It has a cooling effect
It builds up the transpiration pull which is responssible for upward movement of water.
f)-Three adaptations in plants to reduce the above mentioned process
- sunken stomata.
- leaves reduced to spines.
- stomata on the lower surface of the leaves that is the ventral side of the leaves..
