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Subjects
Science State Board
Class 9
Environmental Science
Adaptation in plants, animals and conservation of water
11.
Hydrophytes and the adaptations present in hydrophytes
Exercise condition:
4
m.
Choose the correct answer
:
[
Note
:
There may be more than one answer for some questions
.]
1
.
Which among the following is true about
Hydrilla
?
Roots are well developed with root caps
Roots are poorly developed
Leaves are small, ribbon-like and finely divided
It is a submerged hydrophyte
2
.
How does plants react to water level changes?
Long leaf stack enables the leaves to move in response to change in water level
Floating leaves have long leaf stalks
There is presence of swollen petiole
There is presence of air chambers
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