Mammals Quiz 8

Question 1

Ecology

Answer 1

study and relationship between living organisms and their environment

Question 2

Environment

Answer 2

the sum of all external factors that impact an organism including:

• biotic (living) factors
• abiotic (nonliving) factors

Question 3

Poulation

Answer 3

the members of one species in a given environment

Question 4

Community

Answer 4

all living organisms in a given area, all populations

Question 5

Ecosystem

Answer 5

the complex of living and nonliving environmental components interacting and closely interdependent in any fairly stable situation (big picture ie. an entire forest)

Question 6

Trophic Levels:

Producers

Answer 6

• autotrophs (produce their own food)
• usually green
• photosynthesize (light into energy)
• base of the food chain

Question 7

Trophic Levels:

Consumer

Answer 7

• heterotrophs (cannot produce its own food)
• usually animals
• primary, secondary, or omnivores

Question 8

Trophic Levels:

Primary Consumer

Answer 8

-herbivores (only eat plants)

Question 9

Trophic Levels:

Secondary Consumer

Answer 9

-carnivores (only eat animals)

Question 10

Trophic Levels:

Omnivore

Answer 10

-eats plants and animals

Question 11

Trophic Levels:

Decomposers

Answer 11

• usually bacteria/fungi
• breakdown waste
• recycle chemicals back into the ecosystem to be reused
• very important in ecosystems

Question 12

Food Chain

Answer 12

Made up of Sun, Producers, Consumers, and Decomposers

Question 13

Food Web

Answer 13

complexity of food chains from Sun to Producers of various types, consumers of various types, and decomposers of various types (shows the transference of energy)

Question 14

Ecological Pyramid

Answer 14

• at each step of the food chain there are fewer and fewer organisms
• there are more producers than primary consumers
• there are more primary consumers than secondary consumers
• at each step energy is converted and some is lost as heat
• food chains are typically short