Root Pressure
Trending Questions
How do plants absorb water?
What is transpiration and its advantages?
What is transpiration in the water cycle?
How is water absorbed by root hairs in plants?
Question 48
Fill in the blanks
(a) ___ are forms of complex tissue.
(b) ___ have guard cells.
(c) Cells of cork contain a chemical called ___.
(d) Husk of coconut is made of ___ tissue.
(e) ___ gives flexibility in plants.
(f) ___ and ___ are both conducting tissues.
(g) Xylem transports ___ and ___ from soil.
(h) Phloem transport ___ from ___ to other parts of the plant.
Define root pressure.
Which of the following is a wrong match?
Apoplast – system of adjacent cell walls
Symplast - system of inter connected protoplasts
Phloem - Transport of water
Root pressure – guttation
Choose the correct option.
(i) The pressure exerted in the root due to continuous inflow of water is called
Shoot pressure
Root pressure
Cell pressure
Transpirational pull
How is water absorbed and transported to leaves during the night?
By root pressure.
By gravitational force.
By negative geotropism.
All of the above.
Root pressure is highest when:
Absorption is low and transpiration is high
Transpiration is low and absorption is also low
Absorption is high and so is transpiration
Transpiration is low and absorption is high
Transpiration creates a transpiration pull that helps in the __________.
Root pressure is maximum when the
rate of transpiration is high and the rate of absorption is very low
rate of transpiration is very low and the rate of absorption is very high
rate of absorption and transpiration is very high
rate of absorption and transpiration is very low
The figure below represents an experiment performed to demonstrate certain phenomena in plants. The setup was kept in sunlight for about two hours.
- What is the aim of the experiment?
- Define the process mentioned in (1) above.
- What do you observe in the experiment as evidence of the process stated in (1) and (2) above?
- Suggest a suitable control experiment for comparison.
- Mention the precautions that should be taken for proper results in the experiment.
What is difference between guttation and transpiration?
Do plants transpire at night?
Name a process by which water may be lost from plants.
The major driving force for transport of water through xylem during the day is _________ and during the night, it is ________.
root pressure, transpiration
transpiration, root pressure
diffusion, osmosis
active transport, transpiration
(a) .................................................................................
(b) .................................................................................
Fill in the blanks with the right words from the bracket.
The higher the temperature of air, the ________ the rate of transpiration. (more/less)
Define the following term:
4. Root pressure.
Question 70
Why and how does water enter continuously into the root xylem?
Transportation of nutrients from soil to leaves and upper branches of a plant/tree cannot take place by simple diffusion because:
Roots will lose their definite function.
Distance between them is too long.
Diffusion cannot work against gravity.
All of the above.
- Flowers
- Leaves
- Roots
- Stem
- embryo rescue
- meristem culture
- protoplast culture
anther culture
Where and how does the process of digestion start?
The loss of water from the aerial parts of the plant during day time is known as:
Transpiration
Guttation
Capillary action
Root pressure
