Jeff Corwin Experience

Jeff Corwin Experience The Galapagos Islands: Land of Evolutionary Change

1 What do scientists say makes the Galapagos Islands unique? a. the different kinds of plants living on the islands b. the large numbers of species living on the islands c. the different animal species living on the islands d. the large numbers of marine iguanas on the islands

Which choice BEST explains why each island in the Galapagos has unique kinds 2 of iguanas? a. Iguanas prefer a marine environment. b. Some iguanas are better swimmers than others. c. The species arrived on the islands in different ways. d. The species adapted to each island's unique habitat.

Sea lion bulls stake out the best territory on the water in order to attract other 3 bulls. T / F

4 Why do Galapagos sharks lie still on the ocean floor? a. They are sleeping. b. They are being social. c. They are waiting for food. d. Scientists still don't know why.

5 Penguins are an unusual species to find in the Galapagos Islands because a. the islands are tropical and penguins live in very cold regions b. the islands are very cold and the penguins live in tropical regions c. the island's tropical waters don't have an adequate food source for the penguins d. the island's arctic waters can easily cause the penguins to suffer from hypothermia

6 Why is the tortoise breeding program on Santa Cruz Island important? a. The tortoise population has increased. b. No one knows how long a tortoise's lifespan is. c. No one knows how two tortoise species became extinct. d. The tortoise population has decreased. Masled boobies lay two eggs. Which of the following does NOT occur when the 7 eggs hatch? a. One egg hatches before the other. b. The parent raises both hatchlings. c. The parent ignores the second hatchling. d. The first hatchling pushes the second one out.

Marine iguanas on Espanola Island each show a different coloration of their 8 scales in order to a. dig nests b. stand out in the sand c. identify their territory d. appear healthy for a mate

Why is the giant iguana a good example of Charles Darwin's theory of adaptive 9 radiation, or the way a species adapts to its environment? a. Giant iguanas help each other survive. b. Giant iguanas are larger than other iguana species. c. Giant iguanas live on the largest island in the Galapagos. d. Giant iguanas live on the smallest island in the Galapagos.

If Charles Darwin could return to the Galapagos Island today, which of the 10 following is an example of a change he might see? a. no changes b. more islands c. more tortoises d. new species of iguanas