Photosynthetic pigments Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. Which pair of wavelengths is absorbed most by chlorophyll a?
- A. Green and yellow
- B. Red and blue-violet
- C. Green and orange
- D. Yellow and green-blue
2. What does an action spectrum show?
- A. The light absorbed by one pigment
- B. The reflection from a leaf
- C. The rate of photosynthesis at each wavelength
- D. The temperature at each wavelength
3. Why are accessory pigments useful in a shaded habitat?
- A. They absorb extra wavelengths and pass the energy to chlorophyll a
- B. They store starch
- C. They reflect all light
- D. They replace RUBISCO
4. A pigment moves 3.6 cm and the solvent front 8.0 cm. What is the Rf value?
- A. 0.36
- B. 0.55
- C. 2.2
- D. 0.45
5. Why must the solvent level be below the origin in chromatography?
- A. To make the paper wet
- B. So the pigments are not washed into the solvent but travel up the plate
- C. To increase the Rf value
- D. To avoid the need for a lid