internal fertilization is seen in

Options

A. Algae
B. Amphibians
C. Fungi
D. Bony fishes

Answer

**Step-by-Step Solution:**

1. **Understanding Fertilization Types:**
- Fertilization can be categorized into two types: internal and external.
- Internal fertilization occurs inside the body of the female organism, while external fertilization occurs outside, typically in an aquatic environment.

2. **Characteristics of Internal Fertilization:**
- In internal fertilization, the male gamete (sperm) is deposited into the female's reproductive tract, where it fertilizes the female gamete (ovum).
- This process leads to the formation of a zygote inside the female body, allowing for the development of the embryo within a protected environment.

3. **Examples of Organisms with Internal Fertilization:**
- Internal fertilization is commonly observed in various groups of animals, including:
- Mammals (e.g., humans, dogs, cats)
- Birds (e.g., chickens, eagles)
- Reptiles (e.g., snakes, lizards)
- Some species of fish (e.g., guppies, sharks)

4. **Identifying Organisms with External Fertilization:**
- External fertilization is typical in many aquatic organisms, such as:
- Most fish (e.g., salmon, goldfish)
- Amphibians (e.g., frogs, toads)
- Algae (where gametes are released into water)

5. **Special Case of Fungi:**
- Fungi exhibit a unique form of internal fertilization known as karyogamy, where the nuclei of two gametes fuse within the fungal body.
- This process is distinct from the typical internal fertilization seen in animals.

6. **Conclusion:**
- Based on the definitions and examples discussed, the correct answer to the question "Internal fertilization is seen in" is **Fungi**.