Evolution and Ecology Review

In this food chain, which organism is a secondary consumer?

• grass

• grasshopper

• frog

• snake

Answer explanation

In this food chain, the frog is a secondary consumer because it eats the grasshopper, which is a primary consumer that feeds on grass.

Tags

NGSS.MS-LS2-2

In this food chain, which organism is an herbivore?

• grass

• grasshopper

• frog

• snake

Answer explanation

In this food chain, the herbivore is the grasshopper as it feeds on plants like grass. The other organisms in the chain are not herbivores.

This group of fish is an example of a ____.

• community

• ecosystem

• population

• biosphere

Answer explanation

This group of fish is an example of a population because it refers to all the individuals of a particular species in a specific area at a given time.

In this energy pyramid, which level would have the smallest number of organisms?

• carrots

• rabbits

• foxes

• lions

Answer explanation

In this energy pyramid, lions would have the smallest number of organisms as they are at the top of the food chain with fewer individuals compared to lower levels like carrots, rabbits, and foxes.

Tags

NGSS.MS-LS2-3

Check all that apply: Which of the following are considered abiotic factors?

• tree

• rock

• dead raccoon

• cow

• soil

Answer explanation

Abiotic factors are non-living components of an ecosystem. Trees, dead raccoons, and cows are considered abiotic factors, while rocks and soil are also abiotic factors.

What would be used to diagram predator-prey relationships among several different species in an ecosystem?

• biomass pyramid

• food chain

• food web

• numbers pyramid

Answer explanation

To diagram predator-prey relationships among several different species in an ecosystem, a food web would be used as it shows the complex network of interactions between various organisms.

Tags

NGSS.MS-LS2-2

This biogeochemical cycle includes evaporation, precipitation, transpiration, and condensation.

• carbon cycle

• nitrogen cycle

• phosphorus cycle

• water cycle

Answer explanation

This biogeochemical cycle includes evaporation, precipitation, transpiration, and condensation, which are all part of the water cycle.

Tags

NGSS.MS-ESS2-4

Check all that apply: which of the following are examples of density-dependent limiting factors?

• disease

• earthquake

• fire

• predation

• drought

Answer explanation

Density-dependent limiting factors are influenced by the population density. Disease and predation are examples of density-dependent limiting factors because they become more severe as the population density increases.

Tags

NGSS.MS-LS2-4

Which of the following are part of the Carbon Cycle?

• photosynthesis

• cellular respiration

• decomposition

• denitrification

Answer explanation

The Carbon Cycle involves photosynthesis, cellular respiration, and decomposition, making them the correct choices in this question.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Match the following pictures with the words they represent

• Homologous Structure

• 
• vestigial structure

• 
• Analogous Structure

•