Chloroplasts, pigments and limiting factors Quiz
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5 questions, one answer each
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1. Which part of the chloroplast contains the enzymes of the Calvin cycle?
- A. Thylakoid membrane
- B. Granum
- C. Stroma
- D. Envelope
2. A pigment spot is 4.5 cm from the origin and the solvent front is 6.0 cm from the origin. What is its Rf value?
- A. 0.75
- B. 1.33
- C. 1.50
- D. 0.45
3. An action spectrum differs from an absorption spectrum because it shows
- A. absorbance of one pigment
- B. the rate of photosynthesis at each wavelength
- C. the intensity of light
- D. the temperature of the leaf
4. Which pair of colours of light are absorbed most strongly by chlorophyll a?
- A. Green and yellow
- B. Red and blue
- C. Green and blue
- D. Yellow and red
5. Light intensity is increased but the rate of photosynthesis no longer rises. What is the most likely conclusion?
- A. Light is still limiting
- B. Another factor, such as carbon dioxide or temperature, is now limiting
- C. Photosynthesis has stopped
- D. Chlorophyll has been destroyed