Question

Identify the incorrectly matched pair:

• A. Procambium – primary vascular tissue
• B. Ground meristem–cortex and pith of a dicot stem
• C. Cork cambium–periderm
• D. Protoderm – vascular tissue of a monocot stem

Answer 1

The correct option is D Protoderm – vascular tissue of a monocot stem

There are three primary meristems:
(i) Protoderm, which will become the epidermis. The outer primary meristem of a plant or plant part is called protoderm.
(ii) Ground meristem, which will form the ground tissues comprising parenchyma, collenchyma, and sclerenchyma cells.
(iii) Procambium, which will become the vascular tissues (xylem and phloem).

Phellogen (cork cambium), phellem, and phelloderm are collectively known as periderm.

The majority of the dicot stem is composed of ground tissue, which primarily consists of parenchyma cells. Dicot stems have a ring of vascular bundles, composed of xylem and phloem that divide the ground tissue into the outer cortex and central pith. The ground meristem in plant shoots and roots, derived from the apical meristem, gives rise to the cortex and pith (the ground tissues) in stems and the cortex and endodermis in roots.

The procambium is a meristematic tissue concerned with providing the primary tissues of the vascular system.

So, the correct answer is "option D"