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Science Chapter 4 Study Sheet
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Insects use spiracles to get oxygen. When frogs are tadpole they use gills to breathe. The gills helps
them get dissolved oxygen from the water. When frogs are adults they use lungs to breathe.
Seeds that can be spread over a wide area can have less competition for resources, which is an
advantage.
There are four stages in complete metamorphosis. You will have an egg, pupa, larva, and an adult in
complete metamorphosis. For incomplete metamorphosis you will have an egg, a nymph, and an adult.
Changes in a gene are called a mutation. Mutations can be harmful or beneficial.
When a robin builds a nest out of sticks and dry grass you have an example of a behavioral adaptation.
In the Galapagos Islands, finches on different islands have beaks of different shapes, which helps them
gather the food that grows on the island where they live. The different types of beaks are structural
adaptations.
Structural adaptations of adult frogs that help them survive in their environment are their long, strong
back legs to help them jump far, and their coloring which helps them blend into their environment. Their
webbed feet help them swim and their long tongues help them catch insects.