5B Summary Quiz

What is the function of root hairs in a plant?

• Absorb sunlight for photosynthesis
• Store excess water for later use
• Increase surface area for water & mineral absorption from the soil
• Regulate the opening and closing of stomata

How does water enter the plant?

• Through the process of translocation
• By diffusion through the leaves
• By osmosis into tiny root hairs
• By direct absorption through the stem

What is the role of xylem in a plant?

• Transporting nutrients like sugars
• Regulating the opening and closing of stomata
• Storing excess water for later use
• Transporting water from roots to leaves through hollow tubes

How are xylem vessels strengthened to facilitate water movement?

• By increasing the diameter of the vessels
• By adding rings of lignin to keep them open
• By reducing the number of vessels
• By adding sieve cells

What is the function of phloem in a plant?

• Absorb sunlight for photosynthesis
• Transport water from roots to leaves
• Transport nutrients like sugars
• Regulate the opening and closing of stomata

Which structure in a plant regulates the opening and closing of stomata?

• Mesophyll cells
• Guard cells
• Veins
• Root hairs

What is the term used to describe the movement of water from roots to leaves and out of stomata?

• Transpiration stream
• Photosynthesis cycle
• Osmosis process
• Respiration pathway

Which of the following factors affects the rate of transpiration in plants?

• Root length
• Soil pH
• Leaf color
• Wind speed

How are stomata opened in a plant to facilitate gas exchange?

• By actively pumping K+ ions into guard cells
• By reducing the humidity around the leaf
• By increasing the temperature of the leaf
• By actively pumping K+ ions out of guard cells

What do palisade cells in leaves contain that is essential for photosynthesis?

• Mitochondria
• Ribosomes
• Vacuoles
• Chloroplasts