Frogs are not capable of internal fertilisation.

Answer

**Step-by-Step Solution:**

1. **Understanding Fertilization Types**: First, we need to understand the two main types of fertilization: internal and external. Internal fertilization occurs when the sperm fertilizes the egg inside the female's body, while external fertilization happens outside the body, typically in water.

2. **Frog Reproductive Behavior**: Frogs are known for their reproductive behavior, which involves laying eggs in water. The female frog releases her eggs into the water, where they are then fertilized by the male frog's sperm.

3. **Process of External Fertilization**: In frogs, the fertilization process is external. The male frog usually climbs onto the female's back and grasps her in a position called amplexus. When the female lays her eggs, the male simultaneously releases sperm over the eggs in the water, leading to fertilization.

4. **Conclusion**: Since frogs rely on external fertilization, they do not have the capability for internal fertilization. Therefore, the statement "Frogs are not capable of internal fertilization" is true.

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