Question

Promeristem is found at

• A. Stem nodes or bases of internodes
• B. Leaf bases
• C. Leaf apices
• D. Stem and root apices

Answer 1

Answer: (D)

Stem and root apices

D. Stem and root apices

Reason: Promeristem is the part of the primary shoot apical meristem that contains actively dividing, undifferentiated, isodiametric thin-walled cells.

The shoot apical meristem (SAM) consists of three distinct meristematic zones named histogens.

These histogens are present at the growing tips of a stem or a root.

These tips consist of three histogens and each of these histogens gives rise to tissues which are different from one another- dermatogen, periblem, plerome (principle tissues). So, the correct option is D.