Question

2. What do you mean by residual volume of air in lungs? What is its importance?
3. Explain double circulation of blood in humans with the help of schematic
representation?
4. Why do plants have low energy needs? (two points)
5. Explain the transport of water in tall plants stating the significance of all
physical forces/processes using a mind map.
6. What are the requirements for an efficient respiratory surface?
7. How the process of respiration differs from photosynthesis with respect to
reactants and end products?
8. Explain the respiratory
system in human beings with the help of labelled
diagram?
9. Draw a diagram of cross section of human heart.
Show the path of flow of
blood in it with the help of arrows.
10. A land plant may die if its roots remain water logged for a long time. Give
reason.
11. What will happen if the blood vessel develops a leak? Name the component
of blood which helps in clotting of blood?
12. Trace the movement of oxygenated blood in the body.​

Answer 1

Answer:

residual volume in lungs in volume of air remains after forcible expiration