Ecology Test

Which of the following descriptions about the organization of an ecosystem is correct?

• Communities make up species, which make up populations.

• Populations makeup species, which make up communities.

• Species make up communities, which make up populations.

• Species are grouped in populations, which make up communities.

The small fishes in the middle of the food chain are

• consumers.

• decomposers.

• producers.

• heterotrophs.

Tags

NGSS.MS-LS2-3

An organism that uses energy to produce its own

food supply from inorganic compounds or sunlight is called

• heterotroph.

• consumer.

• detritivore.

• autotroph.

Tags

NGSS.MS-LS1-6

Carbon cycles through the biosphere in all of the following processes

but which one does it not cycle

• photosynthesis.

• transpiration.

• respiration.

• decomposition.

Tags

NGSS.MS-LS1-6

The loss of heat to space is slowed down by ........

• radiation entering the atmosphere.

• atmospheric gases.

• solar energy.

• the biosphere.

Tags

NGSS.HS-ESS2-4

Several species of warblers can live in the same spruce tree ONLY because they

• have different habitats within the tree.

• eat different foods within the tree.

• occupy different niches within the tree.

• can find different temperatures within the tree.

Tags

NGSS.MS-LS2-1

Which are two ways a population can decrease in size?

• immigration and emigration

• increased death rate and immigration

• decreased birthrate and emigration

• emigration and increased birthrate

Tags

NGSS.MS-LS2-4

If a population grows larger than the carrying capacity of the environment, the ________.

• death rate may rise.

• birthrate may rise.

• population will grow faster.

• carrying capacity will change.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

In Rwanda, there are more young children than teenagers, and more teenagers than adults. This age structure indicates a population that ________.

• has stopped growing.

• will double in 30 years.

• has a steady growth rate.

• will decrease in 30 years.

Organisms that break down organic matter and return it to the environment are called?

• decomposers and detritivores

• primary and secondary consumers

• producers and decomposers

• detritivores only

Tags

NGSS.MS-LS2-3