SB5

The drawings below show a young sunflower plant at different times of the day.

Which of the following describes the plant's movement?

• It bends away from the pull of gravity.

• It bends away from light.

• It bends toward light.

• It bends toward water.

Tags

NGSS.MS-LS1-5

A graph representing a population growth curve is shown

What does B represent on this growth curve?

• a population's carrying capacity

• exponential growth within a population

• linear growth within a population

• the lag phase of a population's growth

The graph shows the population growth of a colony of insects over time.

Which statement below best explains what might have occurred to the population of insects at point A?

• The health of the insects improved, causing the population to stabilize.

• A predator was introduced, causing a decline in population growth.

• The population growth decreased as individual insects aged.

• The population reached a carrying capacity and stabilized.

Tags

NGSS.MS-LS2-4

The picture below shows a mimosa leaf before and after it was pinched.

• It is moving away from the pull of gravity.

• It is moving away from touch.

• It is moving toward touch.

• It is moving toward light.

Food Availability, Places to live, and water availability are all ______ of an Ecosystem.

• Biotic factors

• Heterotrophic factors

• limiting Factors

• Population factors

Tags

NGSS.MS-LS2-1

The population of mice in a local forest ecosystem has recently died out due to disease. In the past, these mice were the main predators of the forest beetles. What is the best prediction about what will happen to the beetles?

• The drop in the mouse population will lead to a drop in the beetle population.

• The drop in the mouse population will lead to no change in the beetle population.

• The drop in the mouse population will lead to an increase in the beetle population.

• The increase in the mouse population will lead to an increase in the beetle population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

In an ecosystem, which is NOT a density-dependent limiting factor?

• predation

• parasitism

• competition

• natural disaster

Tags

NGSS.MS-LS2-4

Which of the these is shown from the smallest to the largest?

• organism, population, community, ecosystem, biosphere

• biosphere, ecosystem, community, population, organism

• population, ecosystem, community, organism, biosphere

• community, ecosystem, biosphere, population, organism

What is the primary function of the stomata in plant leaves?

• Gas exchange

• Water absorption

• Nutrient transport

• Photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is a characteristic of a prokaryotic cell?

• Presence of a nucleus

• Presence of membrane-bound organelles

• Lack of a nucleus

• Lack of a cell membrane