Question
What is the function of a root hair cell?
A absorption
B photosynthesis
C reproduction
D support
Answer/Explanation
Ans: A
Question
Which process releases water vapour into the atmosphere from the leaves of trees?
A active transport
B osmosis
C respiration
D transpiration
Answer/Explanation
Ans: D
Question
Petroleum jelly is waterproof and transparent.
Covering the underside of the leaves of a plant with a thin layer of petroleum jelly will slow down the rate of water loss from the plant.
Which statement explains this?
A Plants absorb nutrients from the petroleum jelly.
B Plants absorb water from the petroleum jelly.
C Stomata are blocked by the petroleum jelly.
D The petroleum jelly stops photosynthesis.
Answer/Explanation
Ans: C
Question
What will increase the rate of transpiration in a plant?
A an increase in the humidity of the atmosphere surrounding the leaf
B an increase in the surface area of the cell surfaces inside the leaf
C a decrease in the number of stomata present on the surface of the leaf
D a decrease in the temperature of the atmosphere surrounding the leaf
Answer/Explanation
Ans: B