TCI Science

Which of the following is the correct order of step in which leaves respond to a decrease (shrink) in daylight hours?

• leaves make more chlorophyll --> leaves change color --> leaves fall off plant

• leaves change color --> leaves fall off plant --> leaves stop making chlorophyll

• leaves stop making chlorophyll --> leaves change color --> leaves fall off plant

• leaves make more chlorophyll --> leaves change color --> leaves stay on plant

Tags

NGSS.MS-LS1-5

Look at the picture. You see a fence that is covered in plants. Which of the following stimuli is the plants MAINLY responding to which they coil around the fence?

• Touch

• Gravity

• Water

• Light

Tutu grows seedlings near a window located on the right of the picture. How do the plants respond to light? Use evidence from the picture to make your claim.

• leaves close as they touch the window

• roots grow downward toward the soil

• stems and leaves grow toward the light.

• stems and leaves grow away from the light

Tags

NGSS.MS-LS1-5

How does a plant know what season it is?

• it knows what kind of weather each season brings

• it knows how long each season is supposed to last

• it senses how many hours of daylight there are

• it senses that it must be fall when it has lost its leaves

Which of the following is an example of a plant responding to the stimulus of touch?

• trees grow flowers in the spring

• vines coil around trees

• roots grow down into the soil

• stems and leaves grow upward

Plants can respond to all of these stimuli EXCEPT...

• presence of water

• force of gravity

• sight of a predator

• presence of light

An organism's reaction to a stimulus is called a...

• structure

• tendril

• sensation

• response

Tags

NGSS.MS-LS1-8