7th grade FSSA questions

Which is least likely to cause a species to become extinct due to environmental changes?

• less genetic variation

• more genetic variation

• specific food preferences

• more competition for food

Tags

NGSS.MS-LS4-4

When do genetic changes occur in a population of organisms?

• when the organisms become extinct

• when the organisms produce offspring

• when the organisms find a new food source

• when the organisms interact with another species

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4

Which will most likely happen to a species that cannot adapt to a changing enviornment?

• the species will reproduce

• the species will become extinct

• the species will learn a new behavior

• the species will continue to live in the same location

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Ronald observes a sparrow's nest in a shrub outside his home. He records his observations-

Week 1- six eggs were laid in the nest

Week 3- Five eggs hatched, and one egg did not hath

Week 4- One of the chicks disappeared

Week 7- Three of the chicks learned to fly and another one disappeared.

What part of natural selection did Ronald observe?

• adapation

• overproduction

• selection

• variation

Tags

NGSS.MS-LS4-4

Environmental changes may lead to the evolution of a species. Polar bears live in the Arctic. Ice in the Arctic is melting fast, reducing the range where polar bears can live. If the population of polar bears does not have adaptions that allow them to survive these changes, what may happen to them?

• they may become extinct

• they may overpopulate

• they may change the enviornment

• they may become another species

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Christopher Robin is studying a plant species he found in the forest. He collects leaf samples from a parent plant and from the smaller offspring growing next to it. After running some tests, he finds the offspring is genetically identical to the parent plant. Which is true about his find?

• the offspring were produced sexually and two parents were required

• the offspring were produced asexually; two parents were required

• the offspring were produced sexually; only one parent required

• the offspring were produced asexually; only one parent required

Tags

NGSS.MS-LS3-2

A species of rabbit can have brown fur or white fur. One rabbit with two alleles for brown fur (BB) has brown fur. A second rabbit with alleles for white fur (bb) has white fur. Which is true about the alleles B and b?

• they are two different genes

• they result in the same phenotype

• they are two different verisons of the same gene

• they provide identical instructions for a characteristic

Tags

NGSS.HS-LS3-1

Which statement best describes DNA?

• it can found in every living cell

• it can be found only in specialized cells

• it can be found only in cells with a nucleus

• it can be found only when cells are dividing

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

A cross between two parents results in 50 offspring. How many of the offspring are most likely to have the dominant trait

• 12

• 25

• 30

• 38

Which describes two things that DNA does to make life possible?

• provides energy to cells and survives a cell's death

• copies itself and gives instructions for building cells

• copies itself and changes in response to the enviorment

• provides energy to cells and passes from parents to offspring

Tags

NGSS.MS-LS3-2