Ecology Unit Review

The diagram above represents relationships in an

ecosystem. What is the primary source of energy in

this environment?

• cellular respiration in the plants

• energy from minerals in the soil

• fossil fuels

• solar energy

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Five different living organisms are represented below.

Which statement about the organisms represented

above is correct?

• All of the organisms are autotrophs.

• Only the flowering plant, green heron, and

  aquatic plant carry out photosynthesis.

• Only the frog, aquatic plant and green heron are

  heterotrophs.

• Only the flowering plant and aquatic plant are

  autotrophs.

Mistletoe is an evergreen shrub that can produce most

of its own food. Often, mistletoe can be found living

on trees and taking water and nutrients away from the

tissues of the trees. The relationship between

mistletoe and trees is an example of

• consumer/herbivore

• predator/prey

• scavenger/decomposer

• parasite/host

Tags

NGSS.MS-LS2-4

What is one of the best ways to represent the

interdependence of all of the organisms in an

ecosystem?

• a cell model

• a food chain

• a diagram of the water cycle

• a food web

A stable ecosystem can have high biodiversity

because each species in that ecosystem

• occupies a different niche

• inhabits a different environment

• is part of a different community

• lives in a different biosphere

Many oak trees are cut down and removed from an

oak-hickory forest. A likely result of the direct

harvesting of the oak species would be the

• disruption of natural cycles

• conservation of these natural forest resources

• recycling of all the nutrients in the forest

• prevention of the extinction of animals native to

  the area

The diagram below represents an energy pyramid.

Which type of organism could occupy levels B, C,

and D of this energy pyramid?

• consumer

• producer

• autotroph

• carnivore

Tags

NGSS.MS-LS2-3

Which human activity most directly causes a

significant increase in the amount of carbon dioxide

in the atmosphere?

• growing corn for food

• not using products containing plastics

• driving cars long distances

• planting large numbers of trees

Which row in the chart below represents the most

likely changes in the atmosphere due to widespread

deforestation?

• A

• B

• C

• D

Producers are generally found at the beginning of a

food chain. Which statement best explains why this

is true?

• Producers are usually smaller in size than

  consumers.

• Producers do not rely on other organisms for

  food.

• There are always more consumers than

  producers in food chains.

• Consumers are always more complex

  organisms than producers.