Tunica corpus theory was proposed by

Popham identifies a normal angiospermous corpus to be composed of

Choose the correct sentences:
$(1)$ The meristem present at the tips of roots and shoots is called apical meristem.
$(2)$ Apical meristems are secondary meristems.
$(3)$ Intercalary meristem is the meristem that occurs between mature tissues and appears later than primary meristem.
$(4)$ Fascicular vascular cambium and interfascicular cambium are lateral meristems.

Which meristem is present at the margin of the leaf primordia?

Axillary buds and terminal buds are formed due to the activity of .........

Intercalary meristem is a derivative of