Species of anteaters in Australia, Africa, and South America are not closely related but share similar traits (long sticky tongue, large salivary glands, rugged stomach) for eating ants and termites; what is this an example of?

Answer

This is an example of convergent evolution. Unrelated species independently evolved similar, ant-eating adaptations because they faced similar environmental pressures and had similar diets, producing analogous structures.

Explanation

What the question is testing

You are told the animals live on different continents and are not closely related, but they have very similar features used for the same job (eating ants and termites). That pattern points to a specific evolutionary idea.

Why unrelated species can look similar

Natural selection can favor the same kinds of traits in different lineages when they live in similar niches. If ants and termites are the main food source, traits like a long sticky tongue and strong digestive system increase survival and reproduction, so those traits become more common over time.

The correct concept: convergent evolution

Convergent evolution is when similar adaptations evolve independently in different species because of similar selection pressures, not because the species inherited the traits from a recent common ancestor.

Related term you may see: analogous structures

The shared traits (tongue, glands, stomach features) are analogous structures, meaning they have similar function and appearance but evolved separately in different evolutionary lineages.

Quick check

If the species were closely related and inherited these traits from a common ancestor, it would be homologous structures and divergent evolution, which does not match the prompt.

Skills You Achive

evolutionary biology natural selection comparative anatomy classifying adaptations