Which of the following is an incorrect match ?

Options

A. a) Purines - Adenine, guanine
B. b) Pyrimidines - Cytosine, thymine
C. c) Structural polysaccharides - Inulin
D. d) Storage polysaccharides - Starch

Explanation

To determine which of the following options is an incorrect match, we will analyze each option provided:

1. **Option A: Purines - Adenine and Guanine**
- Purines are a category of nitrogenous bases that include adenine and guanine. This match is correct.

2. **Option B: Pyrimidines - Cytosine and Thymine**
- Pyrimidines are another category of nitrogenous bases that include cytosine, thymine, and uracil. This match is also correct.

3. **Option C: Structural Polysaccharide - Inulin**
- Inulin is actually a storage polysaccharide, not a structural one. It is a fructan that serves as a storage form of energy in certain plants, particularly in the roots and tubers. Therefore, this match is incorrect.

4. **Option D: Storage Polysaccharides - Starch**
- Starch is indeed a storage polysaccharide found in plants. This match is correct.

After analyzing all the options, we conclude that the incorrect match is:

**Answer: Option C - Structural Polysaccharide - Inulin**