Question

3. Complete the following statements :
(a) Hypotonic solution is one in which the solution kept
outside the cell has ........................... solute concentration
than inside the cell.
(b) Active transport is one in which the ions outside the
roots move in by utilising .....
(c) The bending movements of certain flowers towards the
sun and the sleep movements of certain plants at night
are examples of ...............
4.
Fill in the blanks by choosing the correct alternative
from those given in brackets.
(a) When placed in a more concentrated solution, the cell
contents will (shrink / swell up)
(b) The pressure by which the ......... molecules tend to cross
the semi-permeable membrane is called osmotic
pressure. (salt / water)
(c) Active transport is in a direction ......... to that of
diffusion. (opposite / same)
5. Match the items in column I with those in column II
Column I
Column II
(a) Xylem
(i) semi-permeable
(b) Phloem
(ii) permeable
(c) Cell membrane (iii) downward flow of sap
(d) Root pressure
(iv) upward flow of water
(e) Cell wall
(v) guttation​

Answer 1

Answer:

question 3

a...less

b...energy

c.....sensitive plants

question 4

a....swell up

b.....water

c....opposite

question 5

a=v

b=iii

c=i

d=iv

e=ii

Answer 2

Answer:

3(a) Lower

(b)The fluids inside

(c) Turgor pressure

4(a)Shrink

(b)water

(c) opposite

5(a) xylem-upward flow of water

(b) Pholem- downward flow of sap

(c) Cell membrane- Semi permeable

(d)Root pressure-Guttation

(e) Cell wall - Permeable