Page 2 - HA1

7 Which of the following statement does not hold true for the lotus plant?
a) It is rooted in the water body.
b) It has numerous stomata on the upper and lower surface of its leaves.
c) The stem is long and has numerous air spaces.
d) It is a party submerged plant.
8 __ is a fully submerged hydrophyte.
a) Vallisneria
b) Hydrilla
c) Hornwort
d) All of these.
9 __ is not a marine water organism.
a) Frog
b) Shark
c) Dolphin
d) Whale
10 Which statements are true for fully submerged plants?

i) Gaseous exchange occurs through the body surface
ii) Waxy coating to prevent water loss.
iii) The body tissue has numerous air spaces

a) Option (i) & (ii) are correct.
b) Option (ii) & (iii) are correct.
c) Option (i) & (iii) are correct.
d) Option (i) ,(ii) & (iii) are correct,

Subjective:

1) Name the two types of aquatic habitats. 1 E
2) What are the special features in the body of a duck that 1 E
helps it to live in water?
3) Give reasons 3 Av
a) Roots are poorly developed or absent in
hydrophytes.
b) Stomata are found on the upper surface of the leaf
in free-floating hydrophytes.
c) Stomata are absent in fully submerged plants.
4) List 3 adaptive features of a fish that helps it to survive 3 Av
underwater.
5) Differentiate between free-floating and fully submerged 3 D
plants based on their- (i) Stomata (ii) root (iii) Leaves

6) Plants X and Y are aquatic plants. Plant ‘X’ has ribbon- 5 D
like leaves and plant ‘Y’ is covered with cuticle.
(a) Identify the plants ‘X’ and ‘Y’
(b) How are these adaptive features helpful to the
plants?
(c) Give an example of plant X and Plant Y