Find out the incorrect match

Options

A. Sterile stamen- Staminode
B. Stamens attached to petals - Epipetalous
C. Stamens attached to perianth -Episepalous
D. Free stamens - Polyandrous

Explanation

To find the incorrect match from the options provided, we need to analyze each statement regarding the attachment of stamens in flowering plants.

### Step-by-Step Solution:

1. **Understanding Sterile Stamens**:
- The first option states that "sterile stamens are known as staminoid." This is a correct match. Sterile stamens, which do not produce pollen, are indeed referred to as staminoids.

2. **Stamens Attached to Petals**:
- The second option mentions that "stamens attached to the petals are known as epipetalus." This is also a correct match. When stamens are fused to the petals, this condition is termed epipetalus.

3. **Stamens Attached to Perianth**:
- The third option states that "stamens attached to the perianth are known as epicephalus." This is incorrect. The correct term for stamens that are attached to the perianth (the outer floral whorls) is "epiphyllous," not epicephalus.

4. **Free Stamens**:
- The final option states that "free stamens are known as polyandrous." This is correct. When stamens are free and not fused together, the condition is referred to as polyandrous.

### Conclusion:
The incorrect match is the third option: "stamens attached to the perianth are known as epicephalus." The correct term is epiphyllous.

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