Question

a
20. Answer the following questions
(i) Draw
schematic representation of
movement of water in plants during
transpiration and explain it.
(ii) Explain transport of food and other
substance in plants.
(iii) Diffusion will not be sufficient to provide
raw materials in leaves and energy in
roots of plants.
(iv) List the respiratory pigment present in our
body. Where is it present?
(v) Why are valves present in hearth and
veins?​

Answer 1

Answer:

ii) food-transported through phloem

water-through xylem

v) valves are present in heart and veins because to prevent back flow of blood