Ecology Unit Review

Round One – All play

Each question = 1 point

Leaf cells are one type of tree cell. Which process occurs in a live leaf cell?

a. Evolution

b. Adaptation

c. sugar production

d. sexual reproduction

Nitrogen compounds are a part of all organisms. What happens to the nitrogen in an organism after it dies?

a. It is destroyed by decomposition.

b. It is recycled and used by other organisms.

c. It remains trapped in the organism's tissues.

d. It is all used up by the time the organism dies

Herbivore, carnivores, and scavengers are all

a. decomposers.

b. producers.

c. predators.

d. consumers.

During photosynthesis, trees convert carbon dioxide and other materials into

a. Lipids

b. amino acids

c. nucleic acids

d. sugars

Aphids are insects that feed on fluids from the stems of plants. After the aphids ingest the plant fluids, they excrete a liquid called honeydew. Ladybugs eat aphids, which are a source of protein for the ladybugs. Which of these terms best describes the relationship between the ladybugs and the aphids?

a. mutualism

b. parasite–host

c. predator–prey

d. commensalism

How would the food web be affected if the phytoplankton were removed? a. Only organisms that feed

directly on the phytoplankton would be affected.

b. Only organisms that feed directly on the zooplankton would be affected.

c. Only the killer whale and the seals would be affected.

d. All the organisms would be affected.

Animals that eat a variety of meats, fruits, and vegetables are

a. carnivores.

b. herbivores.

c. decomposers

d. omnivores.

What process is represented by the chemical equation above?

a. how plants make food

b. how plants digest food

c. how animals make food

d. how animals digest food

Which of these lists all of the predators shown in the food web?

a. cougars only

b. cougars and snakes

c. cougars, snakes, and shrews

d. cougars, snakes, shrews, and mice

An herbivore might eat all of the following except

a. algae.

b. leaves.

c. ants.

d. ferns.

The cheetahs in Kenya and the cheetahs in Tanzania make up separate

a. species.

b. populations.

c. communities.

d. Territories.

All organisms that can make their own food are called

a. herbivores.

b. producers.

c. consumers.

d. plants.

Part 2 - Head-Head-Head Round

Each questions = 3 points

The greatest amount of energy in an ecosystem is available to

a. herbivores.

b. producers.

c. tertiary consumers

d. secondary consumers

A new species is introduced into an area. This can have harmful effects on species already inhabiting the area. The harmful effects are most likely a result of

a. succession

b. mutualism

c. competition

d. commensalism

According to the food web, which of these supply energy for all the other organisms?

a. Snakes

b. Insects

c. Grasses

d. Cougars

Which of the following processes produces carbon dioxide?

a. Decomposition

b. Respiration

c. Combustion

d. All of the above

Which of these best describes the role of the blue crab in the ecosystem?

a. Carnivore

b. Herbivore

c. Producer

d. omnivore

The relationship between the mice and the insects is an example of

a. Commensalism

b. Mutualism

c. parasite–host

d. predator–prey

Bacteria are necessary to

a. combustion.

b. fix nitrogen.

c. evaporation.

d. photosynthesis.

When fungi and bacteria decompose the bodies of organisms, they return ________ to the environment.

a. Oxygen

b. Carbon

c. Nitrogen

d. Both b and c

Which of these best describes the role of the krill in this food web?

a. Decomposer

b. Consumer

c. Producer

d. parasite

Carbon dioxide is released back into the environment through

a. Photosynthesis

b. Respiration

c. Transpiration

d. evaporation

Scientists classify humans as omnivores, based on their teeth. As omnivores, humans eat

a. only fungi

b. mostly plants and animals

c. only animals

d. mostly bacteria and fungi

Which of the following is true of both the carbon cycle and the nitrogen cycle?

a. The elements both continually cycle through the environment.

b. Bacteria are necessary to both cycles

c. Combustion releases the element into the atmosphere

d. Other organisms need bacteria to obtain the element

Organisms need nitrogen to

a. carry out respiration and remove wastes.

b. regulate heat.

c. break down chemicals

d. build proteins and DNA

Dead leaves on the forest floor become new soil through the actions of

a. tree roots.

b. herbivores.

c. decomposers.

d. primary consumers.

Aphids are insects that feed on fluids from the stems of plants. After the aphids ingest the plant fluids, they excrete a liquid called honeydew. Some species of ants protect aphids from predators. The ants benefit by feeding on the honeydew produced by the aphids. Which of these terms best describes the relationship between the aphids and the ants?

a. Mutualism

b. parasite–host

c. predator–prey

d. commensalism

Which process is not part of the water cycle?

a. Evaporation

b. Fixation

c. Transpiration

d. condensation