As compared to chlorophyll b, chlorophyll a has:
Correct answer: D. Two more hydrogen atoms and one less oxygen atom
- A. Two more hydrogen atoms
- B. One less oxygen atom
- C. Two less hydrogen atoms
- D. Two more hydrogen atoms and one less oxygen atom
Explanation
Chlorophyll a differs from chlorophyll b in its chemical structure: it contains a methyl group (-CH₃) instead of a carbonyl group (-CHO). This difference accounts for chlorophyll a having two more hydrogen atoms and one less oxygen atom than chlorophyll b. Options A and B are partially correct but incomplete, as they each address only one of the differences. Option C is incorrect because chlorophyll a does not have fewer hydrogen atoms than chlorophyll b.
Last updated