Question

longitudinal growth of a plant is mediated by __________ in one word​

Answer 1

Explanation:

Xylem and Phylem

Answer 2

longitudinal growth of a plant is mediated by Intercalary meristem

Explanation:

• The intercalary meristem is the meristem present at the base of the internodes or the nodes of the stem or leaf.

• It enables the elongation & growth of plants at nodes & internodes (stem & leaves) which facilitates the longitudinal development of stem & leaves (grass).

• The intercalary meristem may arise from two sources, which are far behind the shoot and the root tips. One of these is the sub-apical meristem, which is located at the base of the apical meristem and contributes "directly" to the formation of the intercalary meristem. The second is by a process of dedifferentiation of mature tissues, which "indirectly" leads to the formation of the interstitial meristem in the latter part of plant life.