Natural Selection

Which of the following is an example of a behavioral adaptation?

• Migrating in winter

• Having thick fur

• Being nocturnal

• Both migrating in winter and being nocturnal

In a population of beetles, the ones with green shells are eaten more frequently by birds than the ones with brown shells. Over time, what is likely to happen to the population?

• The number of green-shelled beetles will increase.

• The number of brown-shelled beetles will increase.

• The shell color of the beetles will not change.

• The beetles will develop a new defense mechanism.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Competition for resources caused which birds to die out?

• small beaked birds

• dark blue birds

• large beaked birds

• grey birds

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A new trait will only become more common in a population if it is _______________________________

• harmful to predators

• adaptive

• recessive

• dominant

Tags

NGSS.MS-LS4-4

Which statement is correct about the evolution of guppies?

• Small spot size was the adaptive trait 40 years ago.

• Medium spot size was the non-adaptive trait last year.

• Guppies evolved from large to medium spot size over time.

• Guppies evolved from medium to large spot size over time.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

What is the change in distribution of traits from the population at time 1 to the population at time 2?

• Thin blubber increased.

• Thick blubber decreased.

• The distribution did not change.

• Thin blubber decreased and thick blubber increased.

Tags

NGSS.MS-LS4-4

What happened to beak length over generations from 1960 to 2010?

• The distribution of short beaks increased.

• The distribution of long beaks increased.

• The distribution of medium beaks increased.

• The distribution of medium beaks decreased.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

A physical trait favored by an environmental change can be called an

• adaptation

• extinction

• possibility

• mutation

Tags

NGSS.MS-LS4-4

The distribution of traits in a population can change over many generations.

• True

• False

Tags

NGSS.MS-LS4-4

A trait that helps an organism survive.

• adaptive trait

• non-adaptive trait

• distribution

• variation

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4