6th Grade- Energy In Ecosystems

Test Description: Ecology unit

Instructions: Answer all questions to get your test result.

1) only about _____percent of the energy contained in a trophic level is transferred between levels

2) In a food pyramid, the producers are at the

3) It is so important for human beings to eat ____________ and ___________ to receive energy.

4) Carnivores that eat the herbivores are called

5) Primary consumers are also called

6) Plants are called _________ because they are able to use light energy from the sun to produce food from carbon dioxide and water

7) Animals that eat other animals are called

8) Carnivores that eat other carnivores are called

9) species of hummingbirds had a birth rate of 1000 over the course of a year and a death rate of 400 over the course of a year, the growth rate of hummingbirds for that specific population and time period would be

10) Animals and people who eat both animals and plants are called

11) If the number of births is consistently larger than the number of deaths, the population will increase over time

12) When there are more lions, the giraffe population will increase

13) Interconnected food chains form a food web

14) Most animals are only part of one food chain and eat one kind of food in order to meet their food and energy requirements

15) Populations can continue growing forever

16) Less food means fewer organisms can feed, which in turn will lead to

17) a population crash means

18) which of these are NOT reasons that people think shark populations are declining?

19) an environmental factor that prevents a population from growing is called a


*select an answer for all questions

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