Find out the mismatch

Options

A. Internal fertilization - Bryophytes, Pteridophytes
B. External fertilization - Amphibians Fishes
C. Internal fertilization - Gymnosperms, Angiospherms
D. External fertilization - Mammals, Reptiles, Birds

Answer

To solve the question "Find out the mismatch," we will analyze each option provided to identify which one does not fit with the established facts about fertilization in different groups of organisms.

### Step-by-Step Solution:

1. **Understand the Types of Fertilization**:
- **Internal Fertilization**: This occurs when the male and female gametes fuse inside the female's body.
- **External Fertilization**: This occurs when the gametes are released into the environment (usually water) and fertilization happens outside the female's body.

2. **Analyze Each Option**:
- **Option 1**: Internal fertilization occurs in bryophytes and pteridophytes.
- **Analysis**: This is correct. In bryophytes and pteridophytes, fertilization occurs internally within the female reproductive structure.

- **Option 2**: External fertilization occurs in amphibians and fishes.
- **Analysis**: This is also correct. Both amphibians and fishes typically reproduce through external fertilization, releasing gametes into the water.

- **Option 3**: Internal fertilization occurs in gymnosperms and angiosperms.
- **Analysis**: This is correct as well. Gymnosperms and angiosperms undergo internal fertilization where fertilization occurs within the female reproductive organ.

- **Option 4**: External fertilization occurs in mammals, reptiles, and birds.
- **Analysis**: This is incorrect. Mammals primarily exhibit internal fertilization, and while some reptiles and birds may have variations, they generally also utilize internal fertilization.

3. **Identify the Mismatch**:
- From the analysis, **Option 4** is the mismatch because it incorrectly states that external fertilization occurs in mammals, reptiles, and birds.

### Conclusion:
The mismatch is found in **Option 4**: External fertilization occurs in mammals, reptiles, and birds.