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- 1. Multiple Choice
What is transpiration?
evaporation of water
loss of water from the leaves
loss of water through stomata of the leaves
loss of water vapour through stomata of the leaves
- 2. Multiple Choice
What is translocation?
transport of water and nutrients
transport of sugar down the plants
transport of sugar from photosynthetic parts to all other parts of the plant
transport of starch from the leaves down the plant
- 3. Multiple Choice
Which environmental condition lowers the rate of transpiration?
abundant sunlight
high temperatures
low internal CO2 concentration
high relative humidity
- 4. Multiple Choice
Water and mineral salts move in which direction within the plant?
upward
downward
- 5. Multiple Choice
What is the most common storage form of sugar in plants
glucose
sucrose
starch
cellulose
- 6. Multiple Choice
What are the components of phloem?
sieve tubes
sieve plates
companion cells
all of the above
- 7. Multiple Choice
How is the xylem adapted to its functions?
it has an empty lumen and thickened with lignin
it has no cross walls
it has no protoplasm
all of the above
- 8. Multiple Choice
Where does translocation takes place in?
vascular tissues
phloem
stomata
xylem
- 9. Multiple Choice
What are the limiting factors of photosynthesis?
light intensity, CO2 concentration, temperature
wavelengths of light, CO2 concentration, temperature
light intensity, O2 concentration, temperature
light intensity, CO2 concentration, air humidity
- 10. Multiple Choice
How are guard cells adapted to its functions?
contains chlorophyll
contains proton pumps and K+ ion channels
thicker and elastic inner cell wall
all of the above
- 11. Multiple Choice
What are the functions of vascular bundles?
transport sugars
provide mechanical support for the plant
transport water and minerals
all of the above
- 12. Multiple Choice
Why do plants have root hairs?
to absorb water and minerals from the soil
to provide additional support in anchoring the plant
to absorb nutrients from the soil
to grow into longer roots
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