SC.912.L.14.7 - Plant Structure & Funtion

Which plant organ is primarily responsible for photosynthesis?

• Root

• Stem

• Leaf

• Flower

Tags

NGSS.MS-LS1-6

What is the primary function of xylem in plants?

• Transport sugars from leaves to roots

• Transport water and minerals from roots to leaves

• Store food for later use

• Absorb carbon dioxide from the air

Which plant tissue is responsible for transporting sugars throughout the plant?

• Xylem

• Phloem

• Epidermis

• Guard cells

Which of the following plant structures regulates gas exchange and water loss?

• Stomata

• Xylem

• Phloem

• Root hairs

A plant is placed in a dry environment. How might its stomata respond?

• Open wider to take in more carbon dioxide

• Close partially to reduce water loss

• Stop photosynthesis completely

• Absorb water from the air through stomata

How do the structures of root hairs help a plant obtain nutrients?

• They provide a large surface area for water and nutrient absorption

• They transport sugars to the leaves for storage

• They store excess oxygen for cellular respiration

• They perform photosynthesis to produce food

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

A scientist observes a plant with wilted leaves. Which structure is likely malfunctioning?

• Phloem, because it is failing to transport sugars

• Xylem, because it is not delivering enough water

• Stomata, because they are absorbing too much oxygen

• Root hairs, because they are storing too much sugar

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In a plant experiencing drought stress, which adaptation would be most beneficial?

• Increased stomatal density to absorb more CO₂

• Thinner cuticle to allow more gas exchange

• Fewer stomata to reduce water loss

• Increased leaf surface area for better sunlight absorption

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A farmer wants to grow plants that can survive in salty soil. Which adaptation would be most helpful?

• Large leaves with many stomata

• Shallow root systems to avoid salt

• Roots that actively remove salt from absorbed water

• Thinner cuticle to allow faster water absorption

Scientists are developing a genetically modified plant that can survive extreme heat and drought. Which combination of traits would be most effective?

• Thin leaves, increased stomatal density, high transpiration rate

• Large broad leaves, reduced root depth, thin cuticle

• Thick cuticle, deep roots, reduced stomatal density

• Increased leaf surface area, more xylem, more stomata

Tags

NGSS.MS-LS1-5

NGSS.MS-LS3-1

NGSS.MS-LS4-4