Topic Test Answers

What is a possible cause for a decrease in ecosystem productivity?

The open ocean, sea floor, and coral reefs are all examples of habitats with high rates of primary production.

Echolocation is an adaptation bats use to _______.

Which level of consumer has access to the smallest supply of energy?

Water is an abiotic factor in terrestrial environments.

Which of the following is not an example of predation?

Which of the following is a possible reason for migration?

Which of the following is a possible long-term consequence of two organisms occupying the same niche?

Bees obtain food they need from flowers. The flowers benefit by having their pollen dispersed by the bees as they travel from flower to flower. What type of symbiotic relationship is this?

Consider the following food chain:Garden plants are eaten by snails, which are eaten by birds, which are eaten by the household cat.

Which of the following is a man-made aquatic habitat?

Given that water serves as an environmental thermoregulator, which of the following biomes would you expect to have the most stable temperatures?

Algae uses all the energy in sunlight to perform photosynthesis.

Which of the following are not abiotic factors of an ecosystem?

If a stationary body of water has a constant temperature from top to bottom it is most likely a(n) _______.

When gaining biodiversity, _____________ occurs when a new resource is introduced to a species and individual members of that species begin to specialize in the resources that are available.

The four essential elements for life are _______.

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

Calcium and phosphorus are both essential for the proper growth of _______.

The water hyacinth is an invasive species that can spread extremely fast, blanketing a water surface in a very short period of time. It can limit boat traffic, swimming, and fishing, and it can deprive native plants and animals of sunlight and oxygen, thus reducing the local biodiversity. This situation demonstrates _______.