Plant Roots and Absorption Quiz

What is the primary function of a cell membrane in osmosis?

• To control what enters and leaves the cell

• To store nutrients

• To produce energy for the cell

• To allow all molecules to pass through

In osmosis, water moves from an area of _______ concentration to an area of _______ concentration.

• equal, equal

• none, some

• higher, lower

• lower, higher

What happens to water molecules when the fluid outside a cell is more concentrated than inside?

• Water remains static

• Water flows out of the cell

• Water flows into the cell

• Water molecules disappear

Active transport requires energy because it moves particles:

• Without any gradient

• Against the concentration gradient

• In a circular motion

• Along the concentration gradient

Which process allows plants to absorb minerals from the soil?

• Osmosis

• Active transport

• Diffusion

• Evaporation

What is the role of root hairs in plants?

• To increase surface area for absorption

• To produce seeds

• To perform photosynthesis

• To store water

Why do root hair cells lack chloroplasts?

• They are underground and do not perform photosynthesis

• They are not part of the plant

• They are too small to contain chloroplasts

• They do not need energy

What is the main function of mitochondria in root hair cells?

• To absorb sunlight

• To produce chlorophyll

• To release energy for active transport

• To store water

How do root hair cells speed up the absorption of water?

• By producing chlorophyll

• By reducing surface area

• By being exposed to sunlight

• By having a large permanent vacuole

What is the role of xylem vessels in plants?

• To store food

• To carry water and dissolved nutrients

• To perform photosynthesis

• To transport nutrients