The Xylem are responsible for –

The following statements about blood vessels is/are correct.

(A) Arteries have thin and less muscular walls

(B) Walls of veins are non-elastic

(C) Arteries have no valves in their inner lining

(D) Veins do not collapse when empty

Oxygen rich blood from lungs comes to which chamber of the heart-

Separation of oxygenated and deoxygenated blood.

I. Fulfils energy requirement of the body.

II. Ensures the effect transfer of oxygen in the body.

Choose the most appropriate statement from the options listed below that explains the factors which affects transpiration:

(A) If the wind blows faster, the water vapour released during transpiration is faster.

(B) Increase in atmospheric pressure increases the rate of transpiration.

(C) Decrease in temperature allows more water to evaporate.

(D) High humidity in the air increases the rate of transpiration.