Exam 4 Review questions

Question 1

A population is a group of interacting populations of different species living together in the same area

Answer 1

False

Question 2

Trophic levels are feeding levels based on position in a food chain

Answer 2

True

Question 3

Organisms at the base of the food chain are consumers and higher up the food chain than producers

Answer 3

False

Question 4

Niche overlap results in competition

Answer 4

True

Question 5

Ecosystems are made up of the living and non-living components of the environment

Answer 5

True

Question 6

Temperate Forest

Answer 6

Characterized by moderate winters and rainfall

Question 7

Tropical forest

Answer 7

Characterized by warm temperatures and sufficient rainfall

Question 8

Desert

Answer 8

Characterized by extreme dryness

Question 9

Tundra

Answer 9

Characterized by low-growing vegetation and permafrost

Question 10

Grassland

Answer 10

Characterized by perennial grasses and non-woody plants

Question 11

Parasitism

Answer 11

One member benefits, the other is harmed

Question 12

Mutualism

Answer 12

Both members benefit

Question 13

Commenalism

Answer 13

One member benefits, the other is unharmed

Question 14

Predation

Answer 14

One organism feeds on another

Question 15

Competition

Answer 15

Species rely on same resources

Question 16

Carbon Cycle is the movement of carbon atoms via natural processes such as

Answer 16

Decomposition, photosynthesis, respiration

Question 17

What makes an organism a keystone species?

Answer 17

Its loss would negatively impact the community and ecosystem

Question 18

Which is not necessarily true of a keystone species?

Answer 18

It is the most abundant species in the community

Question 19

Which is NOT true of consumers?

Answer 19

They are photosynthetic

Question 20

A graph of growth of the human population has what shape?

Answer 20

J

Question 21

The human population is growing exponentially large due to

Answer 21

Available resources, low death rate, higher birth rate, improved medical treatment and care

Question 22

The growth rate of a population is calculated from the _____ for that population

Answer 22

Differs between birth and death rate

Question 23

Which of the following conditions would lead to the fastest population growth?

Answer 23

Birth rate > death rate; immigration > emigration

Question 24

Removal of a predator from an ecosystem may do all of the following EXCEPT

Answer 24

Allow prey populations to remain above carrying capactiy

Question 25

Symbioses describes

Answer 25

Species living in close association with each other