Question

The epidermal, ground and vascular systems of plants are developed, respectively, from

• A. Protoderm, ground meristem and procambium
• B. Protoderm, procambium and ground meristem
• C. Ground meristem, procambium and protoderm
• D. Procambium, protoderm and ground meristem

Answer 1

Answer: (A)

Protoderm, ground meristem and procambium

Three concentric regions of primary meristematic tissues develop immediately behind the apical meristem . These primary meristems produce the different tissues of the plant body:

1. The outermost protoderm differentiates into the epidermis; a tissue that protects the plant;
2. The adjacent ground meristem differentiates into the central ground tissues (the pith and cortex);
3. The procambium differentiates into the vascular tissues (the xylem, phloem, and vascular cambium).

So, the correct option is A.( Protoderm, ground meristem and procambium )