Primary xylem and phloem are produced by the  

A.  procambium.
B.  protoderm.
C.  leaf primordial.
D.  ground meristem.
E.  proembryo.


A.  procambium.
The apical meristem produces three tissue systems. The protoderm goes on to produce the epidermis of the plant. The ground meristem produces the ground tissues. The procambium gives rise to the primary vascular tissues (primary xylem and primary phloem).

Biology & Microbiology

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