Ecosystem Review

What could be a reason that producers are at the beginning of all food chains?

• Producers transfer energy from the sun into food.

• Producers are the largest animals in the ecosystem.

• Producers consume other organisms for energy.

• Producers are the most colorful organisms in nature.

How does a tropical rain forest and a deciduous forest compare to each other?

• Tropical rain forests are found near the equator, and deciduous forests are found near temperate regions.

• Both tropical rain forests and deciduous forests are found near the equator.

• Deciduous forests are found in tropical regions, while tropical rain forests are found in polar regions.

• Tropical rain forests are characterized by seasonal changes, while deciduous forests have constant climates.

If there is a decrease in the amount of producers in an ecosystem how will consumers be affected?

• There will be more energy available for consumers.

• Consumers will have to find alternative food sources.

• There will be less energy available for consumers.

• Consumers will thrive due to less competition.

Why would a farmer add worms to the soil of their crops?

• Worms help to aerate the soil and improve drainage.

• Worms are decomposers that add nutrients to the soil. Nutrients help crops grow.

• Worms repel pests that harm crops.

• Worms increase the acidity of the soil, which is beneficial for all crops.

What is a difference between a Forests and grasslands?

• Forests have more trees than grasslands and require more rainfall.

• Grasslands have more trees than forests and require more rainfall.

• Forests are drier than grasslands and have fewer trees.

• Grasslands are more diverse in plant species than forests.

In the following food chain what would happen if there was an overhunting of deer?
grass---deer----bobcat----mountain lion

• The amount of grass would increase and the number of mountain lions would decrease.

• The amount of grass would decrease and the number of mountain lions would increase.

• The number of deer would increase and the amount of grass would remain the same.

• The bobcat population would thrive and the mountain lions would disappear.

A grasshopper depends on plants in an ecosystem to survive. Which

would most likely happen if a fire wiped out all the plants?

• The grasshopper population would decrease

• The grasshopper population would increase

• The grasshopper would migrate to another ecosystem

• The grasshopper would adapt to eat other food sources

How are salt marshes and estuaries similar?

• Both have freshwater only

• Both have brackish water and salinity affected by tides

• Both are completely dry

• Both are found only in tropical regions

When an animal dies in an ecosystem a mushroom will sometimes grow on the remains of the animal. Which best describes the role of the mushroom in the ecosystem?

• Mushrooms are producers

• Mushrooms are consumers

• Mushrooms are decomposers

• Mushrooms are parasites

How are oceans and rainforest similar?

• Both ecosystems have many different species.

• Both ecosystems are primarily composed of freshwater.

• Both ecosystems are found only in tropical regions.

• Both ecosystems have a single dominant species.