Definitions

Question 1

Physiological Adaptations

Answer 1

evolved modifications to an organism’s internal functioning or metabolic processes

Question 2

Structural Adaptations

Answer 2

evolved modifications to an organism’s physical structure

Question 3

Behavioural Adaptations

Answer 3

evolved modifications to an organism’s actions

Question 4

Ecosystem

Answer 4

a biological community of interacting organisms and their physical environment.

Question 5

Populations

Answer 5

a group of individuals
of the same species living in the same geographic location

Question 6

Population Density

Answer 6

the number of individuals in a population per unit area

Question 7

Population Distributions

Answer 7

the range of geographical areas that members of a population can be found in
Types :
- Uniform
- Random
- Clumped

Question 8

density-independent factors

Answer 8

environmental factors that affect population growth but are not affected by population density

Question 9

density-dependent factors 

Answer 9

environmental factors that
affect population growth and become stronger as population density increases

Question 10

interspecific competition

Answer 10

the competition for resources between
members of different species

Question 11

intraspecific competition

Answer 11

the competition for resources between
members of the same species

Question 12

Habitat

Answer 12

the natural home or environment of a plant, animal, or other organism

Question 13

Abiotic Factor

Answer 13

a property of the environment relating to nonliving things.

Question 14

Biotic Factor

Answer 14

a property of the
environment relating to living things.

Question 15

Tolerance Range

Answer 15

the range of environmental conditions that are tolerable for survival in a species

Question 16

Mutualism

Answer 16

interactions between
two organisms of different species where both parties experience some overall benefit

Question 17

Commensalism

Answer 17

interactions
between two organisms of
different species where one gains some benefit while the other experiences no significant benefit or harm

Question 18

Predation

Answer 18

interactions between
different species where one organism hunts and kills another organism for food

Question 19

Parasitism

Answer 19

interactions between
two organisms of different species where one organism obtains
nutrients at the expense of a host organism

Question 20

Amensalism

Answer 20

interactions between
two organisms of different species where one organism experiences
some negative effect while the other experiences neither a beneficial nor negative effect

Question 21

Competition

Answer 21

interactions between
two or more organisms competing for the same pool of resources

Question 22

Keystone Species

Answer 22

a species whose effects on an ecosystem are greater than expected relative to
its population size

Question 23

Apex Predator

Answer 23

a predator that has
no natural predators and is at the top of its food chain

Question 24

Ecosystem Engineer

Answer 24

an organism that creates,
significantly alters, or maintains the structure of an environment