Biology - Ecology Units 1-7

Front 1

The interaction of a community with its environment forms:

Back 1

an ecosystem

Front 2

an ecosystem is...

Back 2

an ecosystem involves interactions between biotic and abiotic factors.

Front 3

In a natural community, all the living things that directly or indirectly affect the environment are known as

Back 3

Biotic factors

Front 4

A biologist is studying a freshwater ecosystem in a creek. She notes that the following are found in her study
area: gravel, plants, snails, and fish. The community in this ecosystem would consist of what?

Back 4

The fish, plants, and snails

Front 5

sunlight, climate, rainfall, minerals, gases are examples of what?

Back 5

These are factors in an ecosystem thjat contains only abiotic factors

Front 6

An example of a population is

Back 6

all the Sialia sialis (Eastern Bluebird) in the state of Ohio

Front 7

Spotted knapweed is a plant that was introduced to the United States from Europe or Asia. It spreads rapidly and is poisonous to other plants. It has become a problem in the pastures and rangeland of the Western United States. The Spotted knapweed, in this scenario, is an example of

Back 7

an invasive species

Front 8

Regions across the world with similar abiotic conditions are known as:

Back 8

biomes

Front 9

The total weight of a population is known as its

Back 9

Biomass

Front 10

A small creek flows through a forest. A fire burned all the leaves but left the trees standing. This increased the amount of sunlight reaching the creek, but did not change any other conditions in the creek. As a result of the fire, what organism will most likely increase in the creek?

Back 10

Aquatic plants

Front 11

This explains why producers are always found at the beginning of a food chain?

Back 11

Producers create their own food by converting energy from the sun into chemical energy

Front 12

The organisms in Level 2 obtain food directly from Level 1

Back 12

True- This statement describes a level of the energy pyramid

Front 13

secondary consumers can be found at which level of the energy pyramid?
Level 1,2,3, or 4?

Back 13

Level 3

Front 14

Plankton populations have no affect on humans. True or NOT True?

Back 14

This is NOT TRUE about plankton

Front 15

A student has set up an artificial ecosystem for a class project. This ecosystem has producers, primary
consumers, secondary consumers, and tertiary consumers. By accident, a chemical enters the ecosystem
and kills all of the primary consumers. Which group(s) of organisms will most likely survive?

Back 15

producers

Front 16

A simple food chain in a wetland is represented below.
algae -->paramecium-->Mosquito lavae---> trout-->blue heron
An ecologist doing population counts in the wetland observes a drop in the number of trout over an
extended period of time. What change is most likely responsible for the trout decline?

Back 16

application of insecticides to wet areas where mosquitoes breed

Front 17

Animals that feed exclusively on plants

Back 17

Primary Consumers

Front 18

Organisms that recycle organic matter in an ecosystem

Back 18

Decomposers

Front 19

A species that has been introduced into a new location

Back 19

Nonnative

Front 20

A species that is in its natural environment or habitat

Back 20

Native