3.1 Adaptation and Variation

Question 1

Extinct

Answer 1

describes a species that has completely disappeared from earth

Question 2

Adaptation

Answer 2

a structure, behavior, or physiological change that helps an organism survive or reproduce in a set environment

Question 3

what is adaptation the result of?

Answer 3

gradual and accumulative changes that help an organism survive and reproduce

Question 4

Mimicry

Answer 4

a structural adaptation in which a harmless species mimics a harmful species.

Question 5

why do species mimic others?

Answer 5

it increases the changes of them being avoided by predators.

Question 6

Variation

Answer 6

difference in structure, function or physiology of individuals

Question 7

what determines if a variation becomes an adaptation or not?

Answer 7

the environment which dictates weather the variation will help the organism survive or not.

Question 8

What is the role of the environment/environmental changes?

Answer 8

climate change
droughts, floods
human activity

Question 9

Mutation

Answer 9

a permanent change in genetic material of an organism

Question 10

What do mutations lead to?

Answer 10

they lead to genetic variation, which may also lead to adaptation.

Question 11

Mutagen

Answer 11

radiation, environmental agents, all of which aspects that can also cause mutation

Question 12

When can and can’t mutations be passed down?

Answer 12

in somatic cells they do not get passed down, they disappear once the individual who carries them disappears
they can be passed down when they occur in cells that produce gametes

Question 13

Selective Advantage

Answer 13

an advantage that improves chances of survival in a changing environment