Chapter 12: Population Ecology

Question 1

All the members of the same species living in a particular place

Hint: P

Answer 1

Population

Question 2

Serves as the SOURCE OF ENERGY for the BIOLOGICAL activities of microorganisms

Answer 2

PHOTOSYNTHESIS

Question 3

Conversion of light into chemical energy

Answer 3

Photosynthesis

Question 4

Organisms that eat other organisms

Answer 4

Consumers

Question 5

Regarded as the MAIN source of energy of MOST biological systems on earth

Answer 5

Sunlight

Question 6

Animals that feed directly on plants

Answer 6

Herbivores

Question 7

Animals that feed on meat

Answer 7

Carnivores

Question 8

Animals that eat both plants and meat

Answer 8

Omnivores

Question 9

Energy FLOWS in an ecosystem through?

Answer 9

Food chains

Question 10

Made up of several interlocking food chains

Answer 10

Food web

Question 11

Population’s growth rate is determining what

Answer 11

Population growth

Question 12

This measures how fast the number of members of a given population increases

Answer 12

Population’s growth rate

Question 13

Number of individuals BORN in a given period

Answer 13

Natality

Question 14

Number of DEATHS that occur in a population

Answer 14

Mortality

Question 15

Birth rate is defined as the total number of births per ___ individuals in a population each year

Answer 15

1000

Question 16

Number of species moving INTO a population

Answer 16

Immigration

Question 17

Number of individuals that move OUT of a population

Answer 17

Emigration

Question 18

Movement of individuals in and out of a population

Answer 18

Migration

Question 19

Assumes that a population grows at the CONSTANT RATE. It can be visualized by considering a bacterium that splits into two every six hours.

Answer 19

Exponential growth

Question 20

Assume that as a population grows, REPRODUCTIVE CAPABILITY DECREASES because of environmental resistance

Answer 20

Logistic growth

Question 21

Various effects of crowding, like limited food supply, intense competition, and intense migration

Answer 21

Environmental resistance

Question 22

The maximum size that an environment can support without its resources, becoming completely depleted

Answer 22

Carrying capacity

Question 23

Trend that occurs when the birth rate is EQUAL to the death rate

Answer 23

Zero population growth

Question 24

Any environmental factor that depends on POPULATION DENSITY

Answer 24

Density dependent limiting factor

Question 25

Any factor that is dependent on ABIOTIC FACTORS, such as natural calamities

Answer 25

Density independent limiting factor

Question 26

VARIATIONS WITHIN, and among life forms, including the ecological complexes in which organisms live

Answer 26

Biodiversity

Question 27

Area that hosts high by diversity

Answer 27

Biodiversity hotspot

Question 28

Ability of an environment to resist change

Answer 28

Stability

Question 29

Hypothesis that says a Species’ trait or identity is the force that can help stabilize environment

Answer 29

Insurace hypothesis

Question 30

How do humans disturb the ecosystem

Hint: C U I G D

Answer 30

Combustion of fossile fuels
Unsustainable agricultural practices
Introduction of pollutants
Global warming
Depletion of the ozone layer

Question 31

How can human help the ecosystem

Hint: 5Rs. Energy

Answer 31

5Rs - Reduce, reuse, recycle, repurpose, and repair
Reduce the amount of energy you use

Question 32

Birth control method: Pills, Shots

Answer 32

Hormonal Method

Question 33

Birth control method: Condom

Answer 33

Barrier method

Question 34

Birth control method: Not engaging in sexual intercourse

Answer 34

Natural method

Question 35

The more diverse, the greater the no. In ecosystem, the better it can withstand ecological threats

Answer 35

Stability hypothesis

Question 36

Effects of biodiversity on the stability of an ecosystem

Hint: r s i n

Answer 36

Resistance to invasion
Species resistance to disease
Insurance effect
Negative covariance effect