Practice C1.3 Photosynthesis with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
Paper
Level
Question 1
SLPaper 1A
Which statement best compares absorption and action spectra?
Question 2
HLPaper 1A
Match the processes with their correct thylakoid location:
| Process | Location |
|---|---|
| A. Photolysis of water | ? |
| B. ATP synthesis | ? |
| C. NADP+ reduction | ? |
| Which correctly identifies the location for A, B, and C? |
Question 3
SLPaper 1A
Which best explains why oxygen production increases during light exposure in photosynthetic organisms?
Question 4
SLPaper 1A
Which of the following is a valid hypothesis about limiting factors?
Question 5
SLPaper 1A
A student designs an experiment with light intensity as the independent variable and oxygen bubbles per minute as the dependent variable. Which factor should be controlled?
Question 6
SLPaper 1A
Topic: C1.3 — Photosynthesis
Learning Outcome: C1.3.5 — Absorption spectra
- Why do chlorophyll molecules absorb specific wavelengths of light?
Question 7
SLPaper 1A
Using the image provided, which of the following best explains the relative positions of the pigment bands after the chromatography run?
Question 8
SLPaper 1A
A student conducts an experiment with varying light intensities and measures photosynthesis rate. The graph shows a plateau after a certain point. What is the best explanation?
Question 9
SLPaper 1A
What is a key feature of a FACE experiment?
Question 10
SLPaper 1A
In a controlled experiment measuring the effect of temperature on photosynthesis, which of the following should be held constant?