Unit 3 Review- Plants

What stimulus causes the root and stems to grow in the opposite directions?

• water

• light

• gravity

• temperature

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

Which of the following students is talking about an internal stimulus that would cause a plant to wilt?

1.Not enough moisture in the air

2.Lack of water inside plant cells

3.There is not enough sunlight

4.Too much moisture in the air

• 1

• 2

• 3

• 4

Tags

NGSS.MS-LS1-2

Students observe a plant left by the window over several days. The plant was watered daily. After days, the plant began to grow toward the window.

Why is the plant growing toward the window?

• Heat from the sun

• The plant is leaning toward the window to get fresh air

• The plant is responding to the stimulus of sunlight

• The plant is responding to water in the air

Tags

NGSS.MS-LS2-1

What level of organization in living things is a leaf?

• organ

• organ system

• tissue

• organism

In germinating seeds, the downward growth of roots and upward growth of leaves and stems are the plant's response to-

• sunlight

• gravity

• osmosis

• water

Tags

NGSS.MS-LS1-5

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

• cells, tissue, organ, organ system, organism

• Organism, organ system, organ, tissue, cell

• tissue, cell, organs, tissue, organism, organ system

• organs, organ system, organisms, cells, tissue

What must happen for a seed to emerge from the soil as a seedling?

• The soil must erode and expose the seed

• An animal searching must disrupt the soil

• The seed must exert a force to push a shoot up through the soil

• Another plant must to make room for the new plant

Tags

NGSS.MS-LS2-1

In order for a plant to emerge from a seedling, the seed coat must open. How does it do this?

• Gravity pulls on the seed coat

• Gravity pushes up on the seed coat

• Water from the soil pushes the seed coat

• Water within the seed pushed out against the seed coat

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

• The root changes into branches

• The root grow toward the force of gravity and shoots 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