Amphibians share with reptiles all of the following characters except

Options

A. ventral heart
B. external fertilisation and indirect development
C. dioecious, oviparous
D. cold blooded or poikilotherms

Explanation

To answer the question, "Amphibians share with reptiles all of the following characters except," we need to analyze the characteristics of both amphibians and reptiles.

### Step-by-Step Solution:

1. **Identify the Characteristics of Amphibians:**
- Amphibians are known for their dual life, living both in water (aquatic) and on land (terrestrial).
- They exhibit **external fertilization**, where the eggs are fertilized outside the female's body.
- They undergo **indirect development**, meaning they have a larval stage (like tadpoles).
- Amphibians are typically **oviparous**, laying eggs.
- They are classified as **poikilotherms** (cold-blooded), meaning their body temperature varies with the environment.

2. **Identify the Characteristics of Reptiles:**
- Reptiles primarily live on land.
- They exhibit **internal fertilization**, where fertilization occurs inside the female's body.
- Reptiles can also be **oviparous**, laying eggs, but some give live birth.
- Like amphibians, reptiles are also **poikilotherms**.

3. **Compare the Characteristics:**
- Both amphibians and reptiles have a **ventral heart**.
- Both are **dioecious**, meaning they have distinct male and female individuals.
- The key difference lies in the type of fertilization: amphibians have **external fertilization**, while reptiles have **internal fertilization**.

4. **Conclusion:**
- The characteristic that amphibians do not share with reptiles is **external fertilization**. Therefore, the correct answer to the question is that amphibians and reptiles share all the listed characteristics except for **external fertilization**.

### Final Answer:
Amphibians share with reptiles all of the following characters except **external fertilization**.