Question
What do you mean by transpiration pull ?
✓
Answer
Transpiration Pull: As the water is lost from the leaf surface by transpiration more water molecules are pulled up due to the tendency of water molecules to remain joined (cohesion), and thus- to produce a continuous column of water through the stem. This phenomenon is known as transpiration pull
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
There is a general belief that forests tend to bring more frequent rains. Can you explain it scientifically?
Mention one difference between the following on the basis of what is given in bracket.
Light and dark reactions (products formed)
Light and dark reactions (products formed)
Mention two ways in which root hairs are suited for absorption of water from the soil?
The adjoining figure represents the female reproductive organ of the humans
(i) How does the human embryo developing in the uterus obtain its nourishment?
(ii) Which structure protects and nourishes the developing embryo?
(iii) Define ovulation.
(i) How does the human embryo developing in the uterus obtain its nourishment?
(ii) Which structure protects and nourishes the developing embryo?
(iii) Define ovulation.
Differentiate Between Genotype and Phenotype.
What is the difference between chloroplast and the chlorophyll?
Write any two functions of each one:
Cytokinins
Cytokinins
Write any two major reasons for the population explosion in the world.
If you sprinkle some common salt on grass growing on a lawn, it is killed at that spot.
In an experiment, two sets of apparatus were set up as shown below:
In A there is a concentrated sugar solution inside the thistle funnel and red ink in the water outside the funnel. In B there is a concentrated glucose solution with red ink inside the thistle funnel and water outside the thistle funnel.
In both A and B the level of liquid inside the funnels rises up the tubes. In A the sugar solution turns red and in B, the water turns red.
Study the given observations and answer these questions:
Name the process by which red ink moves in A and B.
Which type of pressure forces the water molecules to move towards thistle funnels and cause a rise in the water level?
Where does this process occur in plants and animals?
What material could be used as a semi-permeable membrane?
In A there is a concentrated sugar solution inside the thistle funnel and red ink in the water outside the funnel. In B there is a concentrated glucose solution with red ink inside the thistle funnel and water outside the thistle funnel.
In both A and B the level of liquid inside the funnels rises up the tubes. In A the sugar solution turns red and in B, the water turns red.
Study the given observations and answer these questions:
Name the process by which red ink moves in A and B.
Which type of pressure forces the water molecules to move towards thistle funnels and cause a rise in the water level?
Where does this process occur in plants and animals?
What material could be used as a semi-permeable membrane?