Question 15
Question 15 of 40
Question image for Q15
You can solve this MCQ to see its answer, but your attempt won't be logged unless you login
No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
6. Plant nutrition
6.2. Leaf structure

State that most leaves have a large surface area and are thin, and explain how these features are adaptations for photosynthesis

14. Coordination and resp...
14.5. Tropic responses

Explain the role of auxin in controlling shoot growth, limited to: (a) auxin is made in the shoot tip (b) auxin diffuses through the plant from the shoot tip (c) auxin is unequally distributed in response to light and gravity (d) auxin stimulates cell elongation

8. Transport in plants
8.4. Translocation

Explain why some parts of a plant may act as a source and a sink at different times