Life Science Chapter 22 Study Guide
Name____________________________
Hour____
Pages 740-745
1- How does energy enter most ecosystems in the world?
2- What do we call organisms that can make their own food?
3- What are the two kinds of consumers and what do they have in common?
4- What do decomposers do for the environment?
5- What is a food chain?
6- What is a food web?
7- What niche (role) is filled by the first organism in any food chain or food web?
8- Why is Figure 3 shaped the way it is?
9- Why can’t there be too many levels in an energy pyramid?
Pages 746-751
1- Name the steps of the water cycle.
2- What is another word for condensation?
3- What is another word for precipitation?
4- We learned earlier that plants use carbon dioxide (CO2 ) and water (H2O) to make sugar (C6H12O6) plus oxygen
(O2) . Then they either break down the sugars that they make or are eaten by something else, releasing the carbon
dioxide and water. Why are these processes part of both the carbon and oxygen cycles?
5- Name 3 things in Figure 7 that put carbon dioxide into the atmosphere.
6- Name 1 thing in Figure 7 that takes carbon dioxide out of the atmosphere.
7- (Figure 8) Why do plants need nitrogen compounds?
8- Why is the relationship between legumes and some bacteria an example of mutualism?
Pages 758-769
1- What is a biome?
2- What are the 6 major biomes on land?
3- Where is one temperate rain forest?
4- Name one country and one state that has a desert biome. ____________________ _______________________
5- What are the 3 biomes are in Minnesota?
6- Which 2 land masses are always covered in ice? ________________________ _______________________
7- What are the different kinds of fresh water ecosystems?
8- Why are they split into 2 groups?
9- What are the different marine ecosystems?
10- Which marine ecosystem is your favorite and why?
For the quiz, make sure you . . .
Can define: Producer, Consumer. Decomposer, Food Chain, Food Web, Energy Pyramid, Carbon Cycle, Biome,
Grassland, Boreal Forest, Deciduous Forest
Understand that overlapping food chains, and animals competing for the same food source makes a food web
Can explain why the energy pyramid is shaped the way it is
Know how water, carbon, oxygen, and nitrogen cycle through the world
Know several biomes and ecosystems in the world