Unit 5 Test Review

Xylem is a plant tissue made up of elongated cells stacked end to end the length of the plant’s stem. Which function is xylem specifically adapted to perform in plants?

Mountain lions are large cats and the top predator in their habitat. A population of mountain lions may vary in several characteristics. If prey becomes more scarce, which variation would provide an advantage to the individuals that possessed it?

Leopard seals are animals adapted to survive in the freezing conditions of Antarctica. Individual leopard seals vary in their different traits. Which of the following variations would give a leopard seal the greatest chance of surviving in its harsh environment?

A genetic characteristic that allows an organism to survive and reproduce:

The process where organisms best fit for the environment are more likely to survive and reproduce:

The process by which humans take control of the breeding process to choose favorable traits to be passed on:

A characteristic of some animals to enter a state of deep sleep during the winter months:

Which internal structure is an adaptation that provided organisms with the function to perform gas exchange on land?

Galapagos finches are birds that live on islands off the coast of South America. The finches on the various islands are very different from each other. As a result of the different food resources on the islands, which of the following structures of the Galapagos finches experienced the greatest change through natural selection?