CIE iGCSE Co-Ordinated Science B6.2 Leaf structure Exam Style Questions Paper 2
Question
The diagram shows a mesophyll cell.
In which structure does photosynthesis take place?
▶️Answer/Explanation
Ans: A
Question
What causes plant leaves to turn yellow?
(A) a lack of magnesium in the soil
(B) a lack of starch in the leaves
(C) a reduction in the rate of photosynthesis
(D) a reduction in the rate of respiration
▶️Answer/Explanation
Ans : A
Question
The diagram shows a cross-section of a leaf of a plant.
The leaf is adapted to float on water with the upper epidermis exposed to the air.
Which statement explains one adaptation visible in the diagram?
(A) Guard cells in the lower epidermis are always closed to stop water escaping the leaf.
(B) The palisade mesophyll cells are next to the lower epidermis to maximise photosynthesis.
(C) The stomata are in the upper epidermis so that gas exchange with the air can take place.
(D) There is no cuticle in the upper epidermis to prevent water entering the leaf.
▶️Answer/Explanation
Ans : C
Question
The diagram shows a cross-section through a leaf.
Which tissue is adapted for gas exchange?
▶️Answer/Explanation
Ans: D