Topic Test Answers

The ecosystem is the lowest level of the biosphere hierarchy to include _______.

For the following organisms, choose the correct order of increasing trophic level.

Which of the following is not an example of an abiotic factor?

Similarities between seemingly unrelated organisms can be explained by Darwin’s theory that organisms come from common ancestors.

Which of the following is not true about Darwin’s book On the Origin of Species?

A portion of grass in a prairie ecosystem was destroyed by wildfire. What will most likely happen to the population of bison that feed on the grass?

Less than 0.1% of the energy in a food chain generally makes it from the sun to quaternary consumers.

Which of the following human activities most likely resulted in the growth of the North American deer population?

Which of the following is the best explanation for why finches on one of the islands in the Galapagos have large beaks while finches on another island have small beaks?

A recent study has shown an increase in the number of predators in an ecosystem. Which of the following is a possible cause for the growth?

The main producers in aquatic environments are _______.

Organisms use different types of adaptations to aid in their survival. One type of butterfly mimics a dead leaf to evade predators. What type of adaptation is this?

Only the water of marine ecosystems contains dissolved salt.

Too much logging in the Oyamel fir forests could lead to the eastern monarch butterfly going extinct because _______.

Which of the following is the biggest threat to the Monarch butterflies’ annual migration?

The elimination of a predator has no negative impacts on that predator’s prey species.

The biggest threats to Christmas Island crabs during their annual migration are _______.

All animals are _______.

Producers are always the highest level in trophic pyramids. Please select the best answer from the choices provided

Sunlight can be considered a food resource.