[Campbell Biology P.807] What is the primary difference between primary growth and secondary... | Practice Question

What is the primary difference between primary growth and secondary growth in vascular plants, according to the 'KEY CONCEPTS' section?

  • A: Primary growth lengthens roots and shoots, while secondary growth increases diameter.
  • B: Primary growth occurs only in herbaceous plants, while secondary growth occurs in woody plants.
  • C: Secondary growth involves meristems, but primary growth does not.
  • D: Primary growth produces the plant body, while secondary growth only produces leaves.

Explanation

According to Key Concept 35.3, 'Primary growth lengthens roots and shoots'. Key Concept 35.4 states, 'Secondary growth increases the diameter of stems and roots in woody plants'. This clearly differentiates their primary effects.