Question

Which of the following are correctly paired?

(i) Growth - Cambium
(ii) Protection - Hypodermis
(iii) Transport of food - Phloem
(iv) Support - Collenchyma

• A. (i), (ii), (iii) and (iv)
• B. (i), (iii) and (iv)
• C. (i) and (iii)
• D. (i), (ii), and (iii)

Answer 1

Answer: (A)

(i), (ii), (iii) and (iv)

• Cambiums are a layer of actively dividing cells between xylem (wood) and phloem (bast) tissues that is responsible for the secondary growth of stems and roots.
• The hypodermis is the outer layer of cells lying immediately below the epidermis of the plant cortex. These cells are modified to give additional structural support or to store food materials or water. After the loss of the piliferous layer of the root, the hypodermis takes over the protective functions of the epidermis.
• Phloem is complex tissues present in plants, used to transport of food.
• Collenchyma cells are elongated cells with irregularly thick cell walls that provide support and structure.
• Thus, all the options are correctly paired.