Photosynthesis Question 18

18. Protochlorophyll differs from chlorophyll in lacking

[1998]

(a) 2 hydrogen atoms in one of its pyrrole rings

(b) 2 hydrogen atoms in two of its pyrrole rings

(c) 4 hydrogen atoms in one of its pyrrole rings

(d) 4 hydrogen atoms in two of its pyrrole rings

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Answer : a

Hints & Solution

(a) Protochlorophyll differs from chlorophyll in lacking 2 hydrogen atoms in one of its pyrrole rings.