Among the following characters, which one was not considered by Mendel in his experiment on pea

Options

A. Stem - Tail or Dwarf
B. Trichomes - Glandular or non-glandular
C. Seed-Green or Yellow
D. Pod - Inflated or Constricted

Answer

To determine which character was not considered by Mendel in his experiments on pea plants, we will analyze the options provided in the question.

1. **Identify the characters Mendel studied**: Mendel focused on seven contrasting pairs of characters in his pea plant experiments. These included:
- Stem height: Tall or dwarf
- Flower color: Violet or white
- Flower position: Axial or terminal
- Pod shape: Inflated or constricted
- Pod color: Green or yellow
- Seed shape: Round or wrinkled
- Seed color: Yellow or green

2. **Examine the options given**:
- **Option 1**: Stem, tall or dwarf - This is a character Mendel studied.
- **Option 2**: Trichomes, glandular or non-glandular - This is not one of the characters Mendel studied.
- **Option 3**: Seed, green or yellow - This is a character Mendel studied.
- **Option 4**: Pod, inflated or constricted - This is a character Mendel studied.

3. **Conclusion**: The character that was not considered by Mendel in his experiments is **Option 2: Trichomes, glandular or non-glandular**.

### Final Answer:
The character that was not considered by Mendel in his experiment on pea plants is **trichomes, glandular or non-glandular**.