Plant Transportation Systems Quiz

What is the main function of xylem in plants?

• Closing and opening of stomata

• Transporting food from leaves to other parts

• Producing glucose through photosynthesis

• Transporting water and minerals from the roots to other parts of the plant

Which pathway involves water and minerals moving from cell to cell through spaces between the cell walls?

• Simplastic pathway

• Apoplastic pathway (extracellular pathway)

• Cytoplasmic pathway

• Phloematic pathway

What happens in the simplastic pathway (cytoplasmic pathway)?

• Water evaporates directly from the roots

• Water moves through the cell walls only

• Water and minerals move across the cytoplasm to reach the xylem

• Minerals are absorbed by the leaves

What is transpiration?

• Opening and closing of guard cells

• Absorption of water by root hairs

• Loss of water through the stomata in the leaves

• Movement of food in phloem

Where is the number of stomata generally more abundant?

• On the lower surface of leaves

• On the stem

• Near the roots

• On the upper surface of leaves

What causes the stomata to open during the daytime?

• Nutrients are depleted

• Water and potassium ions enter the guard cells

• Increase in carbon dioxide

• Decrease in potassium ions

What is the role of phloem in plants?

• Transporting water from soil to leaves

• Absorbing sunlight

• Transporting food from photosynthesis to other parts of the plant

• Exchanging gases

Which cells are associated with phloem?

• Xylem vessels

• Guard cells

• Sieve tube cells and companion cells

• Root hair cells

What is the primary role of guard cells?

• Photosynthesis

• Transporting minerals

• Regulating the opening and closing of stomata

• Producing fruit

How is food transported in plants?

• Up and down the stem through phloem

• Via external agents like insects

• Through the roots

• Through the xylem