edusmart - variation and natural selection

Which of the following is an example of natural selection?

• hummingbirds drinking nectar from a plant

• whales and dolphins swimming to the waters surface to breathe

• Sloths making their homes high in trees to protect themselves from predators

• Brown-colored lizards surviving and reproducting because they are better able to camouflage themselves from predators.

Tags

NGSS.MS-LS4-4

A gradual change over time in a species that enables the species to better survive in its environment is known as a(n)...

• adaptation

• habitat

• population

• competition

Tags

NGSS.MS-LS4-4

NGSS.MS-LS3-1

NGSS.MS-LS4-1

Which of the following statements about variations in speies or populations is TRUE?

• Variations help species and populations to survive

• All organisms in a population have the same variations

• physical variations are the only traits that help species or populations survive

• Behavior variations are the only traits that help species or populations survive.

Tags

NGSS.MS-LS4-4

NGSS.MS-LS3-2

Which of the following is NOT a reason organisms might migrate?

• to reproduce

• to get more food

• to avoid being eaten by predators

• to find a more suitable climate

Tags

NGSS.MS-LS2-4

The graph shows how the population of spiders in one habitat changed over the last 60 years. Based on the data presented in the graph, what can you infer about the population of spiders?

• allthe tan spiders were eaten by other insects

• the green spiders are best suited for the habitat

• the yellow spiders are best suited for the habitat

• the brown spiders cannot find encough food to eat.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Why do organisms have to compete for resources?

• Habitats overlap

• There are too many resources

• Animal like the competition

• Organsim do not have to compete for resources

Tags

NGSS.MS-LS2-1

What do you think would MOST LIKELY happen if a partiular species only came in one size and predators ate that one size?

• the predators would get sick

• the species would become extinct

• the species would reproduce quickly

• Nothing would happen to the species

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

The venn diagram compares and contrast migration and hibernation. What can you conclude, based on the information in the diagram?

• both are a response to change in the environemnt

• migration and hibernation require organisms to move

• a lot of energy is required for migration and hibernation

• the only response to a change in an environment is hibernation

Tags

NGSS.MS-LS2-4

Which of the following is a chemical process that happens in the body of organisms that produces light?

• bioluminescence

• hibernation

• migration

• luminary

Which statement Best describes how hibernation enhances a ground squirrel's chance of survival?

• During hibernation, the ground squirrel's herat rate speeds up to warm its body?

• Hibernation causes the ground squirrel to die but come back to life whenthe weather gets warm again

• during hibernation, the ground squirrel moves to a warmer climate and does not return until it gets warm again

• Hibernation slows the ground squirrel's body processes down so it is uses less energy in the cold winter months when food is scarce.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1