Ecosystems Unit Test Recheck

A species of giant pandas lives only in central China. Bamboo, a tall, green tropical plant, is the main food source for these animals. Large areas of bamboo are being cut down in central China to make room for growing other crops. What will most likely happen to these giant pandas?

• They will become endangered or extinct.

• They will migrate to colder areas of China.

• They will become carnivores.

• They will begin to live in caves.

All producers make their own food. To make their own food they use a process called photosynthesis. Photosynthesis uses which of the following ingredients?

• Water, sunlight, soil

• Water, oxygen, sunlight

• Water, sunlight, carbon dioxide

• Water, soil, oxygen

What non-living things might you find in an ecosystem?

• Mammals, insects, birds

• Plants, fungi, lichen

• Rocks, air, light, soil

• Bacteria and other microbes

What is a likely consequence of cutting down rain forests?

• A reduction in the amount of air pollution on Earth.

• An increase in the number of plants living on Earth.

• A reduction in the variety of organisms living on Earth.

• An increase in the number of arctic ecosystems on Earth.

Algae and other producers need lots of sunlight. Most ocean algae would be found in the water…

• near the shallow areas.

• in the oceanic trench.

• in the deep sea.

• on the beach.

Which statement best describes a food web?

• The largest group in a food web is consumers.

• A food web is a network of food chains

• A food web diagrams the energy at each level in an ecosystem

• A food web is only one path of energy and nutrients in an ecosystem

What type of environment is classified as being connected with, dependent on, or made up of water to live and grow?

• atmospheric

• terrestrial

• aquatic

• glacial

The characteristics of a particular ecosystem is: fertile soil, tall grasses and temperatures that vary by location. This ecosystem is

• desert

• forest

• grassland

• taiga

This is an ocean food chain. What would be an effect if there was a decrease in the sea otter population?

• There would be a decrease in both the sea urchin and kelp populations

• There would be an increase in both the sea urchin and kelp populations

• There would be an increase in the sea urchin population and a decrease in the kelp population

• There would be a decrease in the sea urchin population and an increase in the kelp population

Where does the energy in an ecosystem originate?

• moon

• producers

• sun

• decomposers