Unit 2 Test Review

When rainwater erodes soil and transports it to a nearby river, which two "spheres" of the earth are interacting?

• Atmosphere & Biosphere

• Hydrosphere & Geosphere

• Atmosphere & Geosphere

• Biosphere & Hydrosphere

What term is used to describe the specific role a species plays in its ecosystem?

• biotic factor

• habitat

• niche

• population

A group of different species living together in a particular area is known as ____________ .

• an ecosystem

• a habitat

• a community

• symbiosis

Complete the Energy Pyramid

a

b

c

d

Primary consumers

Producers

Tertiary consumers

Secondary consumers

Two types of organisms consume dead and decaying matter. The difference between these two types of organisms is that ​ (a)   are consumers that feed on dead animals, while ​ (b)   break down plants and animals into simpler molecules.

• producers
• primary consumers
• scavengers
• decomposers

The transfer of solar energy into an organism occurs due to ________________ .

• the 1st law of thermodynamics

• the 2nd law of thermodynamics

• the 3rd law of thermodynamics

In a food web, what do the arrows indicate?

• the flow of energy between organisms

• the distance between species

• the predator-prey relationship

• none of the above

A small remora fish attaches itself to a shark and feeds on the leftover food particles from the shark's meals. The shark is not harmed in this interaction. What type of relationship is this?

• mutualism

• commensalism

• amensalism

• neutralism

• parasitism

Cuckoos are known for laying their eggs in the nests of other bird species. The host bird raises the cuckoo chick along with its own, often leading to a shortage of food for the host's offspring. This interaction is an example of ___________.

• mutualism

• competition

• commensalism

• parasitism

Which sphere of the earth is named using the Greek root meaning "ground"?

• Hydrosphere
• Atmosphere
• Biosphere
• Geosphere