Ecology Review

What is the greenhouse effect?

• It is a phenomenon where the sun’s rays are absorbed by clouds.

• It is a phenomenon that occurs when heat escapes into space.

• It is when heat is trapped by gases, then sent back to earth’s surface.

• It describes the atmosphere’s composition.

In an ecosystem, there are populations of moose, rabbits, grass, and pine trees. Suddenly, a fire blazes through the area, which kills all of the populations. As the months go on, new species of grass begin to take root. This attracts animals, and eventually the ecosystem is restored.

What type of ecological succession happened?

• Primary succession

• Secondary succession

• Tertiary succession

• None of the above

What type of consumer eats plants?

• Herbivore

• Omnivore

• Carnivore

• Both herbivore and omnivore

Organisms that can make their own food do so by the process of:

• decomposition

• respiration

• photosynthesis

• scavenging

The first organism in a food chain is ALWAYS a:

• producer

• consumer

• decomposer

• Any of the above

What is a niche?

• The habitat that an organism lives in

• An organism’s “role” in an ecosystem

• A type of consumer

• The relationship between a producer and consumer

What happens when different species try to occupy the same niche?

• The species compete with each other

• The species cooperate with each other

• The species coexist with each other

• All of the above

How does oxygen cycle between plants and animals?

• Plants and animals both release oxygen

• Plants and animals convert water into oxygen

• Plants take in oxygen that is produced by animals

• Animals take in oxygen that is produced by plants

What is biodiversity?

• The different ways species reproduce

• The degree of variation of life on Earth

• A way to describe similarities between different species

• The process of creating new species

What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease due to being only hawk food source.
• The willow tree population would decrease.
• Foxes would dies due to no food source.