Question

Promeristem gives rise to which meristem?
(A) Secondary
(B) Lateral
(C) Primary
(D) None of the above

Answer 1

Promeristem gives rise to meristem which helps the plants to grow in length. It is responsible for the increase in height of the plant. It has no role in the increase in the width of the plant.

Complete step by step answer:
A meristem consists of indeterminate, actively dividing cells that produce differentiated permanent tissues like the epidermis, trichomes, phellem, and vascular tissues. It is of two types primary and secondary meristems.
The primary meristem comes from a promeristem or embryonic meristem and produces primary permanent tissues of the primary plant body. A meristem is also primary or secondary. A primary meristem is a type of meristematic tissue that's accountable for the first growth. Primary growth is responsible for the growth of the plant in length. It's liable for the increase within the height of a plant. The first meristem is additionally liable for giving rise to the first permanent tissues of the plant. A number of the first meristematic cells may produce cells that become permanent tissues, e.g. dermal, ground, and first vascular tissues. The primary meristem, as a meristematic tissue, consists of undifferentiated (others, partially differentiated), embryonic cells. they're actively dividing cells, with thin walls and enormous nuclei. These cells don't form storage cell wall thickenings and thus have only voltaic cell walls. An example of a primary meristem is that of the apical meristem. Apical meristems are meristematic tissues located within the apices of a plant, e.g. root apex and shoot apex.
So, the correct answer is ‘(C) Primary '.

Note: Meristem present at the edges of the plant is termed as lateral meristem. They're derived from primary permanent tissues during secondary growth and cause an increase in the girth of the plant, as an example, vascular cambium and cork cambium.