CAIE A-Level Biology A2 14.2.4 Abscisic Acid and Stomata Questions
Explain abscisic acid and its effects on stomata using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- A2
Exam points
- Explain abscisic acid and its effects on stomata.
CAIE A-Level Biology A2 14.2.4 Abscisic Acid and Stomata Questions question 1
Fig. 4.1 shows a diagram of a stoma, its guard cells and adjacent epidermal cells.
Fig. 4.1
During stomatal closure:
state precisely where abscisic acid (ABA) binds
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