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WorksheetsTranspiration
Total questions: 30
Worksheet time: 23mins
An apparatus used to measure the rate of transpiration
Garreau's potometer
Darwin's potometer
Ganong's potometer
Adaptation to reduce transpiration
Broader leaves
Stunted growth
More stomata
Narrow leaves
Kidney shaped cells at the border of the stomata
Lenticels
Cuticle
Guard cells
Hydathodes
The function of hydathode is to cause
transpiration
photosynthesis
guttation
bleeding
How will you identify the experimental leaf as dicot?
taproot system
two cotyledons
parallel venation
reticulate venation
The kind of transpiration that takes place from the surface of leaves is
guttation
lenticular
cuticular
stomatal
What happens to the movement of air bubble if apparatus is kept in front of a fan
Air bubble does not move
Air bubble moves very little
Air bubble does not change its position
Air bubble moves very fast
The rate of transpiration increases with
High atmospheric CO2 level
Low water content of leaf
Shedding of leaves
Dry air
What is transpiration?
Excess water being released from the aerial parts of plants in the form of water vapor
Excess sugar being released from the leave
The way a plant makes its food
When the plant uses sugar for energy
Water transported from stems to leaves through what?
xylem
phloem
stems
roots
Which of the following indicates the pathway of water through a plant?
root hair cell --> xylem --> Mesophyll --> substomatal space --> stomata
substomatal space -- > stomata --> root hair cell --> xylem --> Mesophyll
xylem --> stomata --> root hair cell --> Mesophyll --> Substomatal space
Which statement correctly identifies the substance and direction it is transported in the xylem?
Water, only upwards
Glucose, only upwards
Water, up and down the plant
Glucose, up and down the plant
Which is true?
99% of water taken by the plant evaporates through transpiration
9% of water taken by the plant evaporates through transpiration
Evaporation through transpiration accounts only for 1% of all the water the plant takes in
Evaporation through transpiration is minuscule
Stomata opens during night and closes during day
True
False
Adaptations in plant to reduce transpiration are -
No of stomata
Thickness of cuticle
Loss of leaves
All of the above
What is significance of transpiration
Creates suction force
Helps in distribution of water and nutrients
Cooling effect for plants
All of the above
The function of cobalt chloride paper is
To change colour when exposed to sand
To indicate moisture
To change colour according to the acidity or basicity of substance .
More root hairs will lead to
Less transpiration
More transpiration
Closure of stomata
How many types of transpiration are there ?
1
3
4
2
there are more no of stomata on
Ventral side
Dorsal side
Water molecules pull each other up the xylem due to ______________.
capillary action
root pressure
osmosis
active transport
Remember when you put the celery in the water? What happened to the water level by the next day?
The level dropped A LOT, because the celery sucked it up.
The level stayed the same, because the celery was dead.
The level dropped a little, because of evaporation.
Transpiration pull is ____________.
a force used to get water molecules into the roots
a pushing force
a vacuum force
none of the above
Leaves of some plants wilt during midday and recover in the evening. Give reason.
Amount of soil water decreases
Rate of transpiration exceeds rate of absorption
Plant is dead
Plant is turgid now
Which label points to palisade mesophyll?
B
G
J
H
Which letter points to the leaf vein?
A
D
J
G
Which transport process occurs during transpiration?
Diffusion
Osmosis
Active transport
