13. The Necessity of Primary Growth and Secondary Growth

What is the purpose of primary growth in plants?

• Provide mechanical support

• Allows maximum elongation of plants to absorb sunlight for photosynthesis

• Produce stronger bark

• Increase stem diameter

Which of the following is NOT a necessity of primary growth?

• Absorb sunlight for photosynthesis

• Transport products of photosynthesis

• Provide support to young plants

• Increase stem diameter

What is the main function of primary xylem in plants?

• Provide mechanical support

• Increase stem diameter

• Produce more xylem tissues

• Transport water and mineral salts

Why is secondary growth important for plants?

• Absorb sunlight for photosynthesis

• Increase chances of seed production

• Provide stability and mechanical support

• Transport products of photosynthesis

What does secondary growth help plants produce continuously?

• Xylem and phloem tissues

• Physical injuries

• Stronger and thicker bark

• Excessive water loss

Which of the following is NOT a function of secondary growth?

• Provide protection from pathogen infections

• Produce more xylem and phloem tissues

• Transport water and mineral salts

• Increase stem and root diameters

What does primary phloem transport in plants?

• Water and mineral salts

• Xylem tissues

• Mechanical support

• Products of photosynthesis

Why does primary xylem provide support to young plants?

• To increase stem diameter

• To transport water and mineral salts

• To provide stability

• To absorb sunlight for photosynthesis

What is the purpose of producing stronger and thicker bark in plants?

• Produce more xylem tissues

• Transport water and mineral salts

• Provide protection from pathogen infections

• Increase stem diameter

How does secondary growth help plants live longer?

• By increasing stem diameter

• By providing mechanical support

• By producing more xylem and phloem tissues

• By absorbing sunlight for photosynthesis