Which of the following are not secondary metabolites in plants?
Rubber, gums
Morphine, codeine
Amino acids, glucose
Vinblastine, curcumin
Amino acids and glucose are categorized as primary metabolites because they are directly involved in basic metabolic processes and normal growth and development.
Identify the incorrect pair.
Drugs – Ricin
Alkaloids – Codeine
Toxin – Abrin
Lectins – Concanavalin A
Ricin is a toxin
Secondary metabolites such as nicotine, strychnine, and caffeine are produced by plants for their
nutritive value
growth response
defence action
effect on reproduction
Nicotine, strychnine, and caffeine are examples of alkaloids. These are secondary metabolites produced by plants for defense against herbivores and pathogens
Concanavalin A is
a pigment
an alkaloid
an essential oil
a lectin
Concanavalin A is a lectin, a secondary metabolite that does not play a direct role in the growth and development of plants but is present at certain developmental stages.
