Unit 5 Plants Test Review

Terrestrial plants have stomata on the surface of their leaves. A single stomata is surrounded by two guard cells that change shape in response to environmental factors and open or close the stoma. Which of the following best explains how the structure of the leaf is used in processes that occur in plants?

• Carbon dioxide enters the plant through the surface of the leaf for cellular reproduction.

• Water enters the plant through the surface of the leaf for transpiration

• Gases for photosynthesis are exchanged through the surface of the leaf.

• Energy for cellular reproduction is absorbed through the surface of the leaf.

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

A plant species lives in an area with limited sunlight. Which physiological adaptation would be most useful to the plant?

• colorful flowers

• deep roots

• thin cuticle

• large leaves

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

The difference between the xylem and phloem is:

• The xylem transports minerals while the phloem transports water.

• The xylem transports water while the phloem transports food.

• The xylem transports glucose while the phloem transports minerals.

• The xylem transports food while the phloem transports water.

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NGSS.MS-LS2-3

The diagram below shows the different organs of a Sunflower plant. What would most likely be the result if Structure B were damaged?

• The flow of materials through the plant would increase with less vascular tissue.

• The ability of the plant to conduct photosynthesis would be diminished.

• The plant would not be able to pollinate and reproduce through seeds.

• The ground tissues would grow an identical structure to replace it.

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NGSS.MS-LS2-3

If the xylem in a young tree is damaged, which process is first affected?

• absorbing water from the soil

• transporting water to the leaves

• transporting sugar to the roots

• performing photosynthesis

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NGSS.MS-LS2-4

The exchange of oxygen and carbon dioxide between internal leaf cells and the external environment will occur most efficiently if

• the surfaces of these cells are moist and the stomata’s are open

• these cells are moist and the stomata’s are closed

• the surfaces of these cells are dry and the stomata’s are closed

• these cells are dry and the stomata’s are open

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

The cambium is a section of cells in a plant that can become either part of the xylem or phloem, depending on the growth and needs of the plant. If the cambium of a particular plant was damaged, what would be the most likely effect on the plant?

• The plant would not experience any change in physiology.

• The plant would have uncontrolled growth.

• The plant would lose its ability to carry out photosynthesis.

• The plant would not be able to transport nutrients and water.

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NGSS.MS-LS2-4

NGSS.MS-LS1-3

The diagram below outlines some of the structures found in a typical flower.

Which of the following correctly describes the function of Structure Z?

• provide food for plant reproduction through photosynthesis

• attract animals to move pollen from flower to flower

• transport pollen used in fertilization to the ovary

• produce male gametes for the plant to reproduce

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NGSS.MS-LS1-4

How would you classified a vessels that transport nutrients and sugar in plants?

• xylem

• phloem

• veins

• arteries

What is the main purpose of seeds in plants that have them?

• To protect and distribute the embryo.

• To entice animals to eat the plant.

• To be fertilized by other plants.

• To store water for the mother plant.