Ecology Unit Exam Review

What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease due to being only hawk food source.
• The willow tree population would decrease.
• Foxes would dies due to no food source. 

In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

• 10%
• 20%
• 80%
• 90%

All the organisms in a particular location, including their nonliving environment

• ecosystem
• carnivore
• niche
• population

Organisms that relies on other organisms for food; consumer

• herbivore
• decomposer
• heterotroph
• species

Members of a species in a defined area

• Ecosystem
• community
• biodiversity
• population

Which of the following leads to a decrease in biodiversity?

• protection of ecosystems
• pollution control
• selective cutting
• introduction of exotic or invasive species

In the food web shown, the snail would be considered...

• primary consumer
• secondary consumer
• tertiary consumer
• producer

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?

• 10 Kcal
• 1 Kcal
• 100 Kcal
• 1000 Kcal

Which organism in the food web shown to the right would

contain the lowest concentration of chemical pollutants such as DDT?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

All the living things in an ecosystem are the ​ (a)   factos. The nonliving things are ​ (b)   .

• biotic
• abiotic

Answer explanation

Bio = life

A = not