1. An ecological pyramid indicates energy passing along from ________ organisms to carnivores at the top of the chain.

—>> autotrophics

feeders

producers

consumers

2. The _______ components of the fresh water environment consists of the water and substances.

living

—>> non-living

detritus

all of the above

3. ________ contribute to the energy transfer by breaking down detritus

carnivores

omnivores

—>> decomposers

decayers

4. Micro-organisms which depend on the remains of the producers and consumers for survival are ________.

carnivores

omnivores

—>> decomposers

decayers

5. Consumers who feed directly on the producers are mainly ________

super

consumers

—>> omnivores

consumivores

6. Organisms that feed from primary producers are less in number, usually because they require more than one portion of _____ per meal as a means of fulfilling nutritional requirements for a larger organism.

—>> prey

plants

food

minerals

7. Few secondary consumers are eaten by an even smaller amount of _______ consumers in a food chain.

higher

—>> tertiary

primary

eating

8. _______ feed indirectly on the omnivores.

feeders

consumers

omnivorers

—>> carnivores

9. Sometimes the pyramid diagram of a food chain can be ________ usually in the case of parasites and hyper-parasites, where many smaller organisms rely on much larger organisms as a means of food and survival.

flat

reversed

incomplete

—>> inversed

10. Organisms at the bottom of the food chain are usually the smallest in ______ but not always, and are almost inevitably the largest in number.

age

ratio

height

—>> size

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