Adaptations, Variations and Natural Selection

Question 1

Organisms that survive long enough to reproduce have the opportunity to pass genetic information to their _________.

Answer 1

offspring

Question 2

a structure, behaviour, or physiological process that helps an organism survive and reproduce in a particular environment.

Answer 2

Adaptations

Question 3

The type of adaptation that occurs mostly inside an organism. Ex. hibernation (decreases breathing and heart rate), number of stomachs, venom, skunk spray, etc.

Answer 3

Physiological Adaptation

Question 4

The type of adaptation which applies to physical features. Ex. fur, sharp teeth, short legs, etc.

Answer 4

Structural Adaptation

Question 5

The type of adaptation which refers to things organisms do to survive. Ex. Migration, hibernation, hiding, etc.

Answer 5

Behavioural Adaptation

Question 6

Adaptations develop as the result of a gradual ______ in characteristics of members of a population over time.

Answer 6

change

Question 7

(True/False) Adaptations can develop from random variations in the population.

Answer 7

True

Question 8

a visible or invisible difference between one individual and other members of a population

Answer 8

Variation

Question 9

An ____________ variation that helps an organism survive will likely be passed onto offspring.

Answer 9

Advantageous

Question 10

Variations come from what?

Answer 10

1. Combination of parental genetic information
2. Genetic Mutations

Question 11

change in genetic material of an organism.

Answer 11

Mutation

Question 12

Spontaneous Mutagens cause..

Answer 12

Mutations

Question 13

can result in cell death, cell malfunctioning, and uncontrolled cell replication.

Answer 13

Genetic Mutations

Question 14

(True/False) Genetic mutations can only be disadvantageous.

Answer 14

False!!!! (can be advantageous, disadvantageous, or neutral for an organism)

Question 15

characteristics which improves an organism’s chance of survival. (Eg. California ground squirrels’ blood can combat rattlesnake venom).

Answer 15

Selective Advantage

Question 16

In populations that reproduce quickly, like bacteria, viruses, and many insects, a rapidly changing environment can result in populations that _____ fairly quickly.

Answer 16

adapt

Question 17

Process that results when the characteristics of a population change because individuals with certain inherited traits survive specific local environmental conditions, and through reproduction, pass on their traits to their offspring.

Answer 17

Natural Selection
- Survival of the Fittest

Question 18

During Natural Selection, do individuals change during their lifetime?

Answer 18

NO

Question 19

During Natural Selection, do populations change with the passage of time?

Answer 19

YES

Question 20

During Natural Selection, the environment exerts a selective pressure on the __________.

Answer 20

population

Question 21

What happens if no individuals have traits with a selective advantage?

Answer 21

It can lead to extinction of a species

Question 22

Environmental condition that selects for certain characteristics of individuals and selects against others

Answer 22

Selective Pressure