Which of the following are not secondary metabolites in plants?
- AVinblastin, curcumin
- BRubber, gums
- CMorphine, codeine
- DAmino acids, glucose
Solution & Step-by-step Explanation
Primary metabolites are involved in basic physiological processes (growth, reproduction, respiration). Examples include amino acids and glucose. Secondary metabolites (alkaloids, drugs, terpenoids, etc.) are byproducts that often have ecological or economic importance but aren't essential for primary growth.