Population Ecology

Question 1

It uses stones to pry shellfish and break them open on their bellies while swimming on their backs.

Answer 1

Sea Otter

Question 2

The branch of ecology that studies the structure and dynamics of populations.

Answer 2

Population Ecology

Question 3

A group of similar individuals of the same species living in the same place at the same time.

Answer 3

Population

Question 4

What are the four (4) major characteristics of a population?

Answer 4

Population size
Population Density
Population Dispersion
Age structure

Question 5

What are the three characteristics of Population Dispersion?

Answer 5

Random Distribution
Uniform Distribution
Clumped Distribution

Question 6

Number of individuals in a population at a given time

Answer 6

Population Size

Question 7

It leads to extinction, therefore there is low chance of finding (suitable) mates, genetic consequences, environmental effects.

Answer 7

Very Small Populations

Question 8

It leads to starvation, predation, disease which therefore there is competition in resources and etc.

Answer 8

Very Large populations

Question 9

How many is the population in the philippines as of October 11, 2016?

Answer 9

102, 691, 858 Filipinos

Question 10

Number of individuals of a population in a certain space at a given time.

Answer 10

Population Density

Question 11

number of individuals per unit space

Answer 11

Terrestrial ecosystems

Question 12

number of individuals per unit volume

Answer 12

Aquatic ecosystems

Question 13

What are the effects of high population density

Answer 13

Scarcity of food
Lower access to nesting/breeding sites
Higher risk of the spread of disease and parasites
Higher susceptibilty to predation

Question 14

What are the two effects of low population density

Answer 14

Reduced chance of finding a mate
Increased inbreeding

Question 15

The spatial pattern in which members of a population are found in their habitat

Answer 15

Population dispersion

Question 16

The position of individuals of a population are independent of the other.

Answer 16

Random distribution

Question 17

individuals of a population are more or less evenly distributed

Answer 17

Uniform distribution

Question 18

patches or groups of organisms scattered over a given area.

Answer 18

Clumped distribution

Question 19

Population dispersion (and size) is also affected by…

Answer 19

Immigration
emigration

Question 20

The influx of new individuals into a population

Answer 20

immigration

Question 21

the dispersal of individuals from a population

Answer 21

emigration

Question 22

distribution of organisms in a population in time

Answer 22

Temporal distribution

Question 23

Temporal distribution maybe:

Answer 23

Circadian
influenced by tidal fluctuations
lunar
seasonal
due to succesional changes
due to evolutionary changes

Question 24

Scientific name of sea otter

Answer 24

Enhydra lutris

Question 25

it is the relative proportion of individuals in each age group of a population

Answer 25

Age structure

Question 26

Age structure maybe divided into:

Answer 26

Pre-productive (younger than age of sexual maturity) Reproductive (age of sexual maturity) Post-productive (older than age of sexual maturity)

Question 27

Factors that influence population size

Answer 27

Growth Factors (biotic potential) Decrease factors (environmental resistance)

Question 28

The number of young produced per unit of a population per unit of time; major agent of population growth.

Answer 28

Birth rate

Question 29

The number of deaths per unit of time; major agent of population loss

Answer 29

Death rate

Question 30

Classifications of Growth

Answer 30

Rapid Growth Slow Growth Zero Growth Negative Growth

Question 31

Younger than age of sexual maturity

Answer 31

Preproduction

Question 32

Younger than age of sexual maturity

Answer 32

Preproduction

Question 33

older than age of sexual maturity

Answer 33

Postproductive

Question 34

Population size changes due to

Answer 34

Birth Death Immigration Emigration

Question 35

The capacity of a population for growth (increase in size) → varies among populations

Answer 35

Biotic potential of a population