The $Korper-Kappe$ theory was proposed by:

Which of the following are characteristics of cells in the meristematic region?
$I-$ Cells divide continuously.
$II-$ Cells are rich in protoplasm.
$III-$ Cells possess a large,conspicuous nucleus.
$IV-$ All cells of meristematic tissue are differentiated.
$V-$ Cell walls are primary,thin,and cellulosic with abundant plasmodesmata.

The cells in the root and shoot apex:

On the basis of origin,meristematic tissues can be classified into how many groups?

All of the following are lateral meristems, except

Needles of $Pinus$ possess meristem at