Why are the fishes and amphibian called anamniotes?

Explanation

### Step-by-Step Solution:

1. **Definition of Amniotes**: Amniotes are a group of animals that develop embryos surrounded by extra-embryonic membranes. These membranes include the chorion, amnion, allantois, and yolk sac, which provide protection and nourishment to the developing embryo.

2. **Characteristics of Amniotes**: In amniotes, these membranes create a stable environment for the embryo, allowing for development to occur in a more protected setting. This is particularly important for terrestrial animals, as it helps prevent desiccation (drying out).

3. **Fishes and Amphibians**: Fishes and amphibians are classified as anamniotes because they do not possess these extra-embryonic membranes during their development. Instead, they typically lay eggs that are fertilized externally or internally, but without the protective membranes that characterize amniotes.

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