Biology Quiz

Identify this fish using the dichotomous key provided.

The aye-aye lemur is a mammal that feeds mostly on insect larvae that live inside trees. The aye-aye lemur has a specialized middle finger that is long and thin. The aye-aye lemur moves along a tree branch and taps the branch with its specialized finger. When the aye-aye lemur hears a difference in the echo, it will tear open the bark with its teeth until the insect tunnel is exposed. The aye-aye lemur then uses its specialized finger to reach the insect larvae and remove it. What change in its environment most likely resulted in the development of the aye-aye lemur's special adaptation?

Male guppies found in areas without predators are more colorful than the ones found in locations with large predator populations. A population of adult guppies originating from an area with a large number of predators is transferred to a nearby area with few predators. Which of these is most likely to happen over a few generations?

• The number of guppies that die will increase.

• Offspring will stop competing for resources.

• There will be an increase in color patterns of the offspring.

• There will be an increase in the number of colorful guppies.

Some species of millipedes will roll into a ball when threatened, while other species of millipedes can secrete noxious chemicals from their bodies. These adaptations allow the millipedes to

• survive in different temperatures

• avoid different types of predators

• conserve different amounts of energy

• blend into different types of environments

Peppered moths often hide on white-colored birch trees because they are similarly colored. Which of the following environmental changes would lead to the enhanced survival of darker moths?

• Warm weather causes the birch trees to grow their leaves back early.

• Birch trees become covered in black ash from nearby factories.

• Heavy rainfall causes birch trees to grow taller than normal.

• Disease kills off more than half of the birch tree population.

What is the relationship between an organism's traits and its survival? Give an example that supports your answer. Write in a complete sentence.....

The flow of energy in a grassland ecosystem is shown. Based on the diagram, which two populations best represent trophic levels that receive the LEAST amount of the total energy provided to the ecosystem by the grass?

Part A Which statement best describes natural selection?

• As the weather changes, organisms that are able to find shelter need less energy to live.

• Organisms that eat only plants need less food than organisms that eat animals.

• Organisms better adapted to their environment are more likely to reproduce and pass on their traits to their offspring.

• Small organisms are more likely to survive than larger organisms.

Explain the difference between natural selection and selective breeding.

Complete the chart below using the food web shown.