Question

The secondary meristem of apical meristem is also called as
A. Intercalary meristem
B.Floral meristem
C.Lateral meristem
D.None of the above

Answer 1

Hint: This the type of meristematic tissue that is arranged parallel to the edges of an organ which is primarily responsible for increasing the diameter of the plant. They are found as strips or cylinders of dividing cells located parallel to the longitudinal axis of the organ around which they are found.

Complete answer: The lateral meristem is the type of meristematic tissues which is primarily involved in the lateral growth of the plant, i.e. the growth of the plant along the diameter.
1. In woody plants as well as some herbaceous plants, there are two sorts of lateral meristems: the vascular cambium and the cork cambium.
2. These can be found within the stems, and roots on the lateral side of the plant. In plants, the vascular cambium is the main route by which the stems and roots grow.
3. The tissue consists of xylem towards the outer surface and phloem towards the inside. In woody plants, it forms an endless ring of the latest wood around the stem.
4. Cork Cambium tissue is present in mostly woody and a few herbaceous plants and it essentially forms the cork or bark layer on the surface of the stem and is responsible for the secondary growth within the epidermis of roots.

So, the correct answer is option C. Lateral meristem.

Note: Meristematic tissues are the undifferentiated plant tissues found in areas of the plant which undergo growth; these are called meristematic zones. The three sorts of meristematic tissue are intercalary, apical, and lateral. The apical meristem checks the vertical growth pattern. Intercalary meristem is related to the expansion in organs within the middle position, thus the name.