Changes Over Time Test Corrections

Which statement is most likely the explanation of why certain animals are able to adapt to changing environments?

• Some species have a greater genetic variation.

• Some species have mostly dominant genes.

• Some species have unlimited habitats.

• Some species react by mutating.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

What is the role of genes in evolution?

• Only genes can be acted on by natural selection.

• Parents with recessive genes die from overpopulation.

• The genes of most surviving parents have only dominant alleles.

• Only traits that are controlled by genes can be acted on by natural selection.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Many finches that Darwin observed on the Galapagos Islands changed over time from a species that migrated from South America. Which characteristic contributes most to the survival of the different finches?

• the population of the birds

• the habitats in which the birds live

• the main food sources of the birds

• the shape of the bird's beak

Tags

NGSS.MS-LS4-4

A student observes trout living in two ponds, pond X and pond Y. The average size of trout in pond X is larger than the average size of trout in pond Y. Which of the following is a hereditary factor affecting the size of the trout in each pond?

• Pond X is 3 times the size of pond Y.

• The trout in pond X have different genes that the trout in pond Y.

• There is more food available for trout in pond X than in pond Y.

• Pond X has different predators that prey on the trout in pond Y.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

Competition within a pack of wolves may increase if there is an increase in the

• amount of food availble

• amount of oxygen available

• size of their population

• size of the area they inhabit

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

The diagram represents a cross section of several layers of rock. Each layer contains fossils. Which layer contains fossils most likely to resemble life-forms that exist today?

• A

• B

• E

• F

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

NGSS.MS-LS4-2

The graph below represents the extinction rate of invertebrates over the last 600 million years. Based on the graph, it might be concluded that

• there were fewer extinctions 600 million years ago than present

• the greatest invertebrate extinction rate happened about 450 million years ago

• the most recent peak in the extinction rate affected the largest number of groups

• the five greatest extinction rates happened exactly every 100 million years

Tags

NGSS.MS-LS4-1

In a population of brown snakes, a snake is born with a white-spotted pattern. Which factor will have the most influence on whether this trait will become common in the brown snake population?

• the ability of the snake to survive and reproduce

• the appearance of other new traits in the baby snake

• the history of the pattern in previous snake populations

• the presence of heat energy changing the snake pattern

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Field mice are the primary food source for horned owls in an area. Due to a drought, many field mice left the area. Which result would this drought most likely have on the horned owls?

• The horned owl population will consume more field mice.

• Horned owls will follow the field mice to a different area.

• The horned owl population will increase in the area.

• Horned owls will change to a plant-based diet.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A certain species of endangered parrots lives on an island that can be seriously affected by large floods. Which of these is considered a negative impact to the parrot population from flooding?

• a decrease in the availability of food

• a decrease in populations of predators

• an increase in suitable nesting locations

• an increase in places to hide from danger

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4