Find odd w.r.t. ploidy level in bryophytes

Options

A. NCC
B. VCC
C. Spore
D. Foot

Answer

To solve the question of finding the odd one out with respect to ploidy level in bryophytes, we can follow these steps:

### Step-by-step Solution:

1. **Understand Bryophytes**:
- Bryophytes are non-vascular plants that include mosses and liverworts. They have two distinct phases in their life cycle: the gametophyte phase and the sporophyte phase.

2. **Identify the Ploidy Levels**:
- The **gametophyte** phase is **haploid** (n), meaning it has one set of chromosomes.
- The **sporophyte** phase is **diploid** (2n), meaning it has two sets of chromosomes.

3. **Analyze the Options**:
- **Option A: NCC (Neck Canal Cell)**: This is part of the archegonium (female reproductive structure) and is haploid (n).
- **Option B: VCC (Ventral Canal Cell)**: This is also part of the archegonium and is haploid (n).
- **Option C: Spores**: Spores are produced by meiotic division of spore mother cells, making them haploid (n).
- **Option D: Foot**: The foot is a structure found in the mature sporophyte and is diploid (2n).

4. **Determine the Odd One Out**:
- The first three options (NCC, VCC, and Spores) are all haploid (n), while the foot is diploid (2n). Therefore, the odd one out with respect to ploidy level is **Option D: Foot**.

### Final Answer:
The odd one with respect to ploidy level in bryophytes is **Option D: Foot**.

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