INCORRECT Statement on Plant Secondary Metabolites

This solution identifies the incorrect statement regarding plant secondary metabolites among the given options.

Metabolite Statement Analysis

We need to evaluate each statement to find the one that is factually incorrect:

• Statement 1: Atropine is a member of indole alkaloids

  This statement is incorrect. Atropine is a tropane alkaloid, primarily known for its presence in plants like *Atropa belladonna*. Indole alkaloids are a different class, characterized by an indole ring structure.

• Statement 2: Limonene is a cyclic terpene found in citrus plants

  This statement is correct. Limonene is a common cyclic terpene widely found in citrus fruits and is responsible for their characteristic aroma.

• Statement 3: Green tea is rich in polyphenols

  This statement is correct. Green tea contains significant amounts of polyphenols, particularly catechins like EGCG, known for their health benefits.

• Statement 4: Cyanidin contributes to the red color in rose petals

  This statement is correct. Cyanidin is an anthocyanidin pigment responsible for various red, purple, and blue hues in flowers, including roses.

Conclusion

Based on the analysis, the statement that Atropine is a member of indole alkaloids is factually inaccurate. Atropine belongs to the tropane alkaloid class.