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- 1. Multiple Choice
Substances transported in plants are
water
minerals
food
all of the above
- 2. Multiple Choice
Diffusion is a major method of transport of materials in
tall plants
unicellular plants
Multicellular plants
Both (b) and (c)
- 3. Multiple Choice
Diffusion is not effective in
solids
liquids
gases
all of the above
- 4. Multiple Choice
Xylem fibres are made of –
Parenchyma cells
Collenchyma cells
Sclerenchyma cells
Aerenchyma cells
- 5. Multiple Choice
Which of the following do not take part in conduction?
Tracheids
Vessels
Sieve tubes
Fibres
- 6. Multiple Choice
Which of the phloem cells help in storage of food?
Sieve tubes
Companion cells
Phloem parenchyma
Phloem fibres
- 7. Multiple Choice
Absorption of water in plants take place by
osmosis
diffusion
both (a) and (b)
none of the above
- 8. Multiple Choice
Diffusion occurs when molecules move
from lower concentration to higher concentration.
from higher concentration to lower concentration through a membrane.
from higher concentration to lower concentration.
when energy is used.
- 9. Multiple Choice
Ascent of sap in plants takes place through
Cortex
Epidermis
Xylem
Phloem
- 10. Multiple Choice
If the xylem vessels of a plant are plugged
the leaves will turn yellow
no food will be made
the plant will wilt (shrivel)
the plant will continue to grow
- 11. Multiple Choice
Force responsible for the ascent of sap is
capillary force
root pressure
transpirational pull
all of the above
- 12. Multiple Choice
Raisins swell when put in
rainwater
saturated salt solution
mustard oil
saturated sugar solution
- 13. Multiple Choice
The root-hairs are suited for absorbing water from the soil because
they have a large surface area
they have a semi-permeable membrane
they contain a solution of higher concentration than the surrounding water.
all of the above
- 14. Multiple Choice
Transpiration is defined as:
the rise of water up to the stem of a plant.
the elimination of water with dissolved water products.
the loss of water as water vapour from the aerial parts of a plant.
the loss of water as water vapour from the roots as well as the leaves of the plant.
- 15. Multiple Choice
Which one of the following favours the fastest transpiration rate?
A cool, humid, windy day
A hot, humid, windy day
A hot, humid, still day
A hot, dry, windy day
- 16. Multiple Choice
Movement of molecules against a concentration gradient is called
diffusion
osmosis
active transport
all of the above
- 17. Multiple Choice
Nitrogen, Phosphorus and Potassium are examples of
macronutrients
micronutrients
trace elements
all of the above
- 18. Multiple Choice
Deficiency of magnesium leads to
slow growth
yellowing of leaves
curling of leaves
shoots fail to develop
- 19. Multiple Choice
The ‘girdling experiment’ shows that
water is transported by xylem
food is transported by phloem
transport is unidirectional
transport is bi directional
- 20. Multiple Choice
Mineral ions are transported by
diffusion
osmosis
active transport
none of the above
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