Plant Systems Biology STAAR

On a leaf surface, guard cells that open and close in response to the amount of water available to keep everything balanced is an example of what?

• phototropism

• homeostasis

• respiration

• constructive feedback

What process causes a plant to wilt in response to too much or too little water?

• Dehydration

• Transpiration

• Respiration

• Photosynthesis

Tags

NGSS.MS-LS2-1

What are xylem?

• series of tubes that carry water from roots to the leaves

• series of tubes that carry water from leaves to the atmosphere

• series of tubes called roots

• series of tubes call leaves

Tags

NGSS.MS-LS2-3

What is taken into a plant through the stomata on the underside of a plants leaf?

• Oxygen

• Carbon dioxide

• glucose

• Chlorophyll

Tags

NGSS.MS-LS1-6

What does the plant release into the atmosphere through the stomata on the underside of a leaf?

• Oxygen

• Water vapor (H2O)

• Oxygen & Water vapor (H2O)

• Glucose

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The movement of water into and out of cells is due to...

• dialysis

• oxidation

• atmospheric pressure

• turgor pressure

What is most likely to cause wilting in plants?

• Long exposure to cold external temperatures

• Loss of water in cells throughout the plant

• An increased amount of sunlight exposure

• An increased amount of sunlight exposure

Tags

NGSS.MS-LS2-1

Responses in plants that result in movement away from or toward a stimulus are called -

• tropisms

• differentiation

• adaptations

• yield

In a germinating seed, the downward growth of roots and the upward growth of leaves and stems are the plant's response to what?

• water

• osmosis

• sunlight

• gravity

Tags

NGSS.MS-LS1-5

What must be present to start photosynthesis?

• Chlorophyll

• Sunlight

• Chlorophyll & Sunlight

• None of the above

Tags

NGSS.MS-LS1-6