The chloroplasts of diatoms and chrysophycean algae do not possess____________?
Correct answer: C. Defined grana and stroma
- A. Chloryphyllpigments
- B. Enzymes for photolysis
- C. Defined grana and stroma
- D. Carotenes with chlorophylls
Explanation
Diatom and chrysophycean chloroplasts have a distinctive internal organization and do not show the clearly defined grana and stroma arrangement typical of higher-plant chloroplasts. Students may choose the chlorophyll option because pigment composition differs among algae, but these algae do contain chlorophyll pigments.
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