Chapter 7. Chapter 7: Ecosystem and Nutrient Cycling

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1.

All energy in ecosystems is ultimately derived from:

A.

chemical energy in food.

B.

heat energy from the greenhouse effect.

C.

solar energy.

D.

kinetic energy.

2.

An example of a biogeochemical cycle is:

A.

the energy passed from one organism to another in a food web.

B.

the addition of organic matter to soil.

C.

the movement of carbon between the atmosphere and plants.

D.

the sharing of nutrients between a parasite and a host.

E.

None of the above

3.

Energy enters the biosphere as solar energy and leaves as reflected solar energy and heat. Matter does not enter or leave the biosphere, however. We therefore say that energy --------flows throughcycles within the biosphere and matter --------flows throughcycles within it.

4.

Thought Question: If energy enters the biosphere as solar energy, how does it move through communities of organisms? (Select all that apply.)

As light reflected from organisms

As biomass created by plants

As organisms that are eaten by other organisms

5.

Examine the map from Infographic 7.4 and select the correct answer for each of the following statements:

This biome is mostly found in bands along the Tropics of Capricorn and Cancer.--------TaigaDesertGrasslandTropical rainforest

This is one of the largest terrestrial biomes and is found exclusively in the Northern Hemisphere. --------Mediterranean scrubSavannaMountainBoreal forest

This biome is found along the coasts of North America and across most of Europeand eastern Asia. --------Temperate forestGrasslandMountainMediterranean scrub

6.

Most Grasslands are found (select two):

Along coasts

In the interiors of continents

Near deserts

In the tropics

7.

Examine the graph from Infographic 7.4 and select the correct answer for each of the following statements:

The difference between Mediterranean scrub and tropical scrub is that --------tropical Scrub is warmerMediterranean scrub is warmertropical scrub is wetterMediterranean scrub is wetter.

The biggest difference between temperate forest and temperate grassland is that --------temperate forest is wettertemperate grassland is wettertemperate grassland is warmertemperate forest is warmer.

The coldest and driest biome is --------desertmountaintundraboreal forest.

The warmest and wettest biome is --------temperate foresttropical rainforesttropical seasonal forestsavanna.