7th UT 3: stim/resp+flow+orgs; most missed CA + old STAAR

As a seedling is sprouting through the soil, the force it exerts to grow up must

be greater than the pulling down force. Which of the following forces is MOST

LIKELY the downward force?

• Friction

• Gravity

• Geotropism

• Turgor Pressure

A model of a plant's growth is shown below. Which statement BEST describes what happened to the plant between stages 3 and 5?

• The plant shriveled up and died after receiving too much sunlight.

• The plant grew taller toward the sun.

• The plant wilted due to lack of water.

• The plant stem curved toward the sunlight.

Tags

NGSS.MS-LS1-5

A student plants a bean seed in the class vegetable garden. After a few days, the bean seed germinates and a seedling emerges from the soil.

What type of force drives the seedling to emerge from the soil?

• The moon’s gravity applies a pull force to the seedling, driving the seedling

  through the soil.

• The seedling applies a push force against the soil surface to break through

  the soil so it can be exposed to the Sun.

• Earth’s gravity applies a pull force on the soil, lowering the soil beneath the

  seedling.

• Earth’s gravity applies a push force against the seedling, driving the

  seedling through the soil.

Tags

NGSS.MS-LS1-5

NGSS.MS-PS2-4

A potted plant is tipped over on its side. As the plant continues to grow, which

of the following best shows the following;

1. The direction the roots will continue to grow.

2. The direction the stem will continue to grow.

Select TWO correct answers.

Tags

NGSS.MS-LS1-5

Phototropism is a plant's response to light. The ability to grow toward sunlight

gives a plant an advantage to grow. Energy from sunlight causes photosynthesis

resulting in an increase in food production. The plant growing towards light is a response to -

• an external stimulus

• an internal stimulus

• a signal being detected

• a large amount of glucose

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

The food web shows several organisms that live in a marine ecosystem. Which

organisms are primary consumers?

Select THREE correct answers.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Most of the oxygen that enters the atmosphere is a result from the process of -

• Respiration

• Fermentation

• Transpiration

• Photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following statements best describes biotic and abiotic factors?

• Biotic factors are the things in a habitat that are not living, abiotic factors are the

  living organisms.

• Only abiotic factors are needed in a habitat to make it sustainable.

• Only biotic factors are needed in a habitat to make it sustainable.

• Biotic factors are living or was once living organisms and abiotic factors are

  nonliving.

The picture below shows a grassland with tall trees. What type of organism would be more supported living in this environment?

• An organism that has thick fur and short ears.

• An organism with scales that does not perspire.

• An organism with a long neck to reach leaves high up and hooves

• An organism that has a sleek body and gills to allow them to breathe.

Tags

NGSS.MS-LS4-4

Scientist observe two different habitats in North America. In the event of a natural disaster, which habitat most likely survives and has the ability

to rebuild?

• Habitat 2 survives and rebuilds because there are less species that escape the

  natural disaster

• Habitat 1 survives and rebuilds because there is less biodiversity

• Habitat 1 survives and rebuilds because there is more biodiversity

• Habitat 2 survives and rebuilds because there is less biodiversity

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4