Quiz 2 Practice - Bio

The combined portions of the planet in which life exists, including land, water, and the atmosphere, form the

• biosphere
• community
• species
• ecosystem

A consumer eats both plants and animals. What is it called?

• herbivore
• carnivore
• omnivore
• frugivore

An ecologist marks out an area in a specific ecosystem and proceeds to identify the number of insect species in the area. This is an example of ecological

• experimentation
• observation
• modeling
• inference

The main source of energy for life on Earth is

• organic chemical compounds
• inorganic chemical compounds
• sunlight
• producers

How does a food web differ from a food chain?

• A food web contains a single series of energy transfers.
• A food web links many food chains together.
• A food web has only one trophic level.
• A food web shows how energy passes from producer to consumer.

The amount of energy represented in each trophic level of consumers in an energy pyramid is about

• 90% of the level below it
• 90% more than the level below it
• 10% more than the level below it
• 10% of the level below it

When the birthrate of a population exceeds its death rate, the population

• decreases
• increases
• stays the same
• increases then decreases

Groups of different species that live together in a defined area make up a(an)

• population
• community
• ecosystem
• biosphere

Which of the following is a decomposer?

• fox
• plant
• bacteria
• bird

The movement of individuals into an area is called

• demography
• logistic growth
• immigration
• emigration