Question

Choose the correct answers from the alternatives given.
Unlike primary growth, secondary growth in both roots and stems

• A. Is indeterminate
• B. Produces xylem and phloem
• C. Involves vascular and cork cambiums
• D. Result in a rapid increase in root or stem length

Answer 1

The correct option is C Involves vascular and cork cambiums

Secondary growth is the increase in the girth of stem and roots of plant. It occurs by cell divisions in two lateral meristems that are vascular cambium and cork cambium.

Vascular cambium is a thin layer of cells between xylem and phloem which increases girth by cell divisions

Cork cambium is a layer of meristematic cells that give rise to cork outside and secondary cortical cells inside.

While plant growth is indeterminate due to both primary and secondary growth. Also, both primary and secondary produce xylem and phloem.

So the correct answer is it "Involves vascular and cork cambiums''