Biology for ( Grade 10 )

DAILY PRACTIVE PROBLES # 4

OBJECTIVE QUESTIONS

1. Osmosis is the movement of :

(A) solute particles from higher concentration to lower concentration

(B) solvent particles from higher water potential to lower

water potential through a semi permeable membrane

(C) solute particles from higher concentration to lower concentration

through a semipermeable membrane

(D) solvent particles from lower water potential to higher water

potential.

2. The ultimate cause for the movement of water against the gravity in a

tree is

(A) osmosis (B) transpiration (C)

imbibitions (D) photosynthesis

3. Which one of the following is connected with transport of water in

plants?

(A) Phloem (B) Xylem (C) Epidermis (D)

Cambium

4. Which of the following contributes most to transport of water from the

ground to the leaves of a tall tree?

(A) Breakdown of ATP (B) Capillary rise of water is xylem

(C) Cohesion of water and transpiration pull (D) Root

pressure.

5. The process of transpiration in plants helps in

(A) opening of stomata (B) absorption of CO 2 from