Population

Question 1

factors that affect the population growth rate
differently depending on the density of the population.

Answer 1

Density-Dependent limiting factor

Question 2

These limiting factors can lead to a logistic growth pattern

Answer 2

Density-Dependent Limiting Factors

Question 3

There are more individuals that are trying to
consume the same resources when the population gets denser. When this
happens, this leads to competition for mates, shelter, water, light, and other
resources that they need in order for them to survive and be able to reproduce.

Answer 3

Competition within Population

Question 4

There are more individuals that are trying to
consume the same resources when the population gets denser. When this
happens, this leads to competition for mates, shelter, water, light, and other
resources that they need in order for them to survive and be able to reproduce.

Answer 4

Competition within Population

Question 5

There are more individuals that are trying to
consume the same resources when the population gets denser. When this
happens, this leads to competition for mates, shelter, water, light, and other
resources that they need in order for them to survive and be able to reproduce.

Answer 5

Competition within Population

Question 6

Populations that are denser may attract other animals that may attack
them for survival. As a result, the population may decrease.

Answer 6

Predation

Question 7

When more individuals live together in the same place,
______ may easily break out which may result in death. In this condition,
_____ are more likely to spread.

Answer 7

Diseases and Parasites

Question 8

Accumulation of harmful waste products may reduce the
growth of the populations due to death of some individuals.

Answer 8

Waste Accumulation

Question 9

factors that affect the growth rate but are independent of
the density of the population

Answer 9

Density- Independent Limiting Factor

Question 10

This is the influx of new individuals from other areas. Majority of
organisms do this either to find food or a suitable place to breed and raise their
young

Answer 10

Immigration

Question 11

This is the movement of individuals out of a population and into other
locations. Some organisms do this due to reasons that their habitat is no longer
ideal for them and they need to find a more suitable environment. This can cause
local populations to decline.

Answer 11

Emigration

Question 12

The number of offspring per lifetime of a female

Answer 12

Fecundity

Question 13

Period of pregnancy

Answer 13

Gestation

Question 14

It is the number of live births added to the population. The
species with high fecundity, fast
gestation, and higher ratio of female to male will have this

Answer 14

Birth rate or natality

Question 15

It is the number of deaths occurring in the population over
a period of time. It is affected by the natural lifespan of the species, resources
available in the environment and the limiting factors mentioned above.

Answer 15

Death rate or mortality

Question 16

This formula will show how much change occurred in the population over a
period of time.

Answer 16

Population Growth rate = (birth + immigration) - (death + emigration) x 100%

Question 17

A positive GR means….

Answer 17

The population is increasing

Question 18

A negative
GR….

Answer 18

means the population is decreasing

Question 19

A zero GR….

Answer 19

means the population has
sustained its number despite changes in the birth, death, immigration and
emigration rates.