UNIT 3: Plant Systems Review

In a germinating seed, the downward growth of roots and upward growth of leaves and stems are the plant's responses to ---

• sunlight

• gravity

• osmosis

• water

Tags

NGSS.MS-LS1-5

What causes a plant to wilt?

• response to gravity

• negative homeostasis

• excessive humidity

• lack of turgor pressure

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Seeds that are planted upside down are still able to grow into mature plants. Which explanation best explains this phenomenon?

• The roots change into branches, and the branches turn into roots.

• The roots grow toward the force of gravity, and the shoots grow away.

• The plant will become a smaller version of a mature plant.

• Roots always grow toward the dark, and shoots grow toward the light.

Tags

NGSS.MS-LS1-5

Which of the following lists the levels of organization from the simplest to the most complex?

• Cells, tissues, organs, organ systems, organisms

• Organisms, organ systems, organs, tissues, cells

• Tissues, cells, organs, organisms, organ systems

• Organs, organ systems, organisms, cells, tissues

What level of organization within a plant is the structure below?

• Organ

• Organ system

• tissue

• organism

Leaves are composed of vascular tissue that brings water in so that ground tissue can conduct photosynthesis. Based on this information, what level of organization describes leaves?

• Tissue

• organ

• organ system

• organism

Tags

NGSS.HS-LS1-2

Plant root tips have a layer of cells that function together to grow rapidly to allow the plant to increase the plant’s ability to reach water and stabilize in the ground. Based on this information, what level of organization describes the plant root tips?

• tissue

• organ

• organ system

• organism

The stem and leaves of the plant in the diagram above are exhibiting which behavior?

• Gravitropism

• Geotropism

• Autotropism

• Phototropism

Tags

NGSS.MS-LS1-5

Students observed a plant left by a window over several days. The plant was watered daily. After three days, the plant began to grow towards the window as shown above.

Which of the following best explains the student’s observations?

• Heat from the Sun caused the plant to grow towards the window.

• The plant is leaning towards the window to get fresh air.

• The plant is responding to the stimulus of sunlight.

• The plant is responding to water in the air and growing towards it.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

What internal stimulus would cause the plant to respond as depicted below?

• Exposure to too much sunlight

• Exposure to very little sunlight

• An abundance of water in the stem

• A lack of water in the stem

Tags

NGSS.MS-LS1-5