B24 13-24

Students planned and conducted an investigation to identify factors that affect the growth of populations of bacteria. The students set up two test tubes with nutrients and placed the test tube at 37C. They placed two types of bacteria into test tube 2: bacteria A and bacteria C. The graphs summarize their data.

Which explanation is BEST supported by the data?

• Bacteria A and Bacteria B compete for the same resources.

• Bacteria A and Bacteria C have the same carrying capacity in this environment.

• Bacteria B and Bacteria C require the same resources to survive.

• Bacteria A and Bacteria C have a predator-prey relationship.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

Snowy egrets are birds that breed in coastal and inland waterways. In the past, hunting the birds for their feathers greatly reduced the snowy egret population. Laws now protect egrets from hunting, and the population has recovered. Today, many wetlands are being drained and filled with rocks and soil so that humans can build on the land. What is the MOST LIKELY impact of the draining of these wetlands on the snowy egret population?

• The snowy egret will be unaffected because it will adapt to living in dry envrionments.

• The snowy egret's habitat will be reduced, and its population will decrease.

• The snowy egret's habitat will not be affected, so its population size will remain stable.

• The snowy egret will move to forests and its population will increase.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

The diagram show relationships among a group of plants.

Based on this information, which pair of organisms would you expect to be most similar?

• Liverworts and hortworts

• Liverworts and mosses

• Lycophytes and ferns

• Lycophytes and mosses

Tags

NGSS.MS-LS4-2

Shifts in the timing of hibernation, as well as shortening of the length of hibernation periods, have been recorded in a variety of species in response to changes in climate. As global temperatures increase, many animals have been emerging from hibernation earlier than usual. Which explanation BEST predicts how this environmental change will affect hibernating animals?

• The animals may emerge before they can find the food they need to survive.

• The animals that emerge earlier will have more time to gather resources, so survival will increase.

• The animals will probably find ways other than hibernation to conserve energy.

• The animals will migrate rather than hibernate, to better meet their needs for resources.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

In a population of bluebirds, females often choose to mate with males that have the most brightly colored feathers. Assuming that feather color is a genetic trait, which is the MOST LIKELY consequence of this behavior?

• The number of male birds in the population will increase.

• The number of birds that have brightly colored feathers will increase.

• The number of male birds that leave the population will increase.

• The number of birds that have new mutations for brightly colored feathers will increase.

Tags

NGSS.MS-LS4-4

NGSS.MS-LS1-4

Students planned and conducted an investigation to identify factors that affect the growth of populations of bacteria. The students set up two test tubes with nutrients and placed the test tube at 37C. They placed two types of bacteria into test tube 2: bacteria A and bacteria C. The graphs summarize their data.

Which explanation is BEST supported by the data?

• Bacteria A and Bacteria B compete for the same resources.

• Bacteria A and Bacteria C have the same carrying capacity in this environment.

• Bacteria B and Bacteria C require the same resources to survive.

• Bacteria A and Bacteria C have a predator-prey relationship.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

Which of Mendel's laws could BEST be used to explain why a parent with the genotype AaBb can produce a gamete with the genotype aB?

• law of dominance

• law of independent assortment

• law of segregation

• law of variability

Tags

NGSS.HS-LS3-2

Snowy egrets are birds that breed in coastal and inland waterways. In the past, hunting the birds for their feathers greatly reduced the snowy egret population. Laws now protect egrets from hunting, and the population has recovered. Today, many wetlands are being drained and filled with rocks and soil so that humans can build on the land. What is the MOST LIKELY impact of the draining of these wetlands on the snowy egret population?

• The snowy egret will be unaffected because it will adapt to living in dry envrionments.

• The snowy egret's habitat will be reduced, and its population will decrease.

• The snowy egret's habitat will not be affected, so its population size will remain stable.

• The snowy egret will move to forests and its population will increase.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

The Punnett square shows a cross in pea plants. G represents the allele for green pods, and g represents the allele for yellow pods.

Based on the Punnett square, which statement best explains the inheritance of pod color in pea plants?

• The alleles for pod color are codominant.

• The alleles for pod color show incomplete dominance.

• The allele for green pods is dominant over the allele for yellow pods.

• Many alleles control the pod color of pea plants.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

The diagram show relationships among a group of plants.

Based on this information, which pair of organisms would you expect to be most similar?

• Liverworts and hortworts

• Liverworts and mosses

• Lycophytes and ferns

• Lycophytes and mosses

Tags

NGSS.MS-LS4-2