Plant Biology Quiz

What is the function of guard cells in the leaf?

• They control the opening and closing of the stomata.

• They are responsible for photosynthesis.

• They transport water throughout the plant.

• They provide a big surface area for gas exchange.

Which part of the plant is responsible for carrying out photosynthesis?

• Xylem

• Phloem

• Chloroplasts

• Vascular bundle

What is the main function of the xylem?

• Transporting nutrients

• Gas exchange

• Photosynthesis

• Transporting water

Where are air spaces primarily found in the leaf structure?

• Upper epidermis

• Palisade mesophyll

• Spongy mesophyll

• Lower epidermis

What is the role of the phloem in plants?

• Transporting water

• Transporting nutrients

• Photosynthesis

• Gas exchange