Quiz about Natural Selection Amplify Unit Test

Question 1

Scientists measured the spot size of guppies (small fish) in two different populations. Which population has more guppies with large spots?

Accepted Answer

The population in Venezuela has more guppies with large spots.

Answer

They both have the same number of guppies with large spots.

Answer

The population in Brazil has more guppies with large spots.

Answer

These bar graphs do not show which population has more guppies with large spots.

Question 2

Scientists measured the spot size of all the guppies (small fish) that lived in a river 40 years ago. They measured the spot size of the guppy population again last year. When was there more variation in the spot size of guppies in the river?

Accepted Answer

There was the same amount of variation in spot size 40 years ago and last year.

Answer

These bar graphs do not show the amount of variation in the population.

Answer

There was more variation 40 years ago.

Answer

There was more variation last year.

Question 3

How would you describe the histogram above?

Accepted Answer

Most of the ostrilopes have medium length fur

Answer

Most of the ostrilopes have no fur

Answer

There is only one type of fur in this population

Answer

Most of the ostrilopes have thick fur

Question 4

How would you describe the variation in this histogram?

Accepted Answer

There is high variation

Answer

There is no variation

Answer

There is low variation

Question 5

Which of the following is an adaptive trait?

Accepted Answer

yellow ostrilopes in a yellow environment with predators present

Answer

yellow ostrilopes in a green environment with predators present

Answer

multiple colors of ostrilopes in a yellow environment with predators present

Answer

all of the ostrilopes dying off

Question 6

If this population is adaptive, after 50 years how will this population change if there is little to no rainfall?

Accepted Answer

the thornpalms will shift to store more water

Answer

the thornpalms will stay about the same

Answer

the thornpalms will shift to store less water

Question 7

What would be something that would cause a population to be adaptive?

Accepted Answer

a change in the climate/ weather

Accepted Answer

<p>predators </p>

Accepted Answer

low food supply

Answer

high food supply

Question 8

Why did the newts become poisonous?

Accepted Answer

snakes were introduced to their environment

Accepted Answer

they needed to protect themselves from predators

Answer

they wanted to

Answer

they were attacked by another poisonous animal

Question 9

What is an adaptive trait?

Accepted Answer

a trait that makes it more likely to survive in an environment

Accepted Answer

a trait that will help a population reproduce

Answer

a trait that makes it less likely to survive in an environment

Answer

a trait that will lead to extinction

Question 10

What is an non-adaptive trait?

Accepted Answer

a trait that makes it less likely to survive in an environment

Accepted Answer

a trait that could lead to extinction

Answer

a trait that makes it more likely to survive in an environment

Answer

a trait that will help a population reproduce

Question 11

If their environment changes to have only long flowers, which of the following hummingbird populations will most likely survive?

Accepted Answer

Populations 2 and 3 will survive.

Answer

Only population 2 will survive because it is the only population with variation.

Answer

All the populations will survive because the hummingbirds will change the length of their beaks if they need to.

Answer

Populations 1 and 2 will survive.

Question 12

How did the environment change between time 1 and time 2? How did the population change?

(HINT:Ducks with thinner feathers withstand hot environments, but die in cold. Ducks with thick feathers die in hot environments, but thrive in cold.)

Accepted Answer

The water became warm. With each generation, more ducks with thin feathers survived long enough to pass on the gene for thin feathers to their offspring.

Answer

The water became warm. As a result, ducks with thin feathers were more likely to survive, so the ducks with thick feathers changed to have thin feathers.

Answer

The water became warm. As a result, ducks with thin feathers were more likely to survive, so both kinds of ducks passed on the gene for thin feathers to their offspring.

Answer

You cannot tell how the environment changed. With each generation, more ducks passed on the gene for thin feathers to their offspring.

Question 13

Which of the following best describes natural selection?

Accepted Answer

A) The process by which organisms with favorable traits survive and reproduce more successfully.

Answer

B) The random change in allele frequencies in a population.

Answer

C) The movement of individuals into or out of a population.

Answer

D) The intentional breeding of organisms for desired traits.

Question 14

In an experiment, a population of beetles is exposed to a new pesticide. After several generations, most beetles are resistant to the pesticide. What is the most likely explanation for this observation?

Accepted Answer

C) Beetles with natural resistance survived and reproduced.

Answer

A) The beetles learned to avoid the pesticide.

Answer

B) The pesticide caused mutations in the beetles.

Answer

D) The beetles developed resistance through use.

Question 15

Which of the following scenarios is an example of natural selection in action?

Accepted Answer

B) A population of insects becomes resistant to a pesticide over time.

Answer

A) A farmer breeds cows to produce more milk.

Answer

C) A scientist clones a sheep to study its genetics.

Answer

D) A gardener cross-pollinates flowers to create new colors.

Natural Selection Amplify Unit Test

15 questions