Sclerenchymatous sheath is present in vascular bundles of:

Identify $A$ to $E$ in the given diagram of a Dicot stem and choose the correct option.

In a cross-section of a plant organ, the vascular bundles are found to be conjoint, collateral, endarch, and scattered in the ground tissue. Which organ is this?

In which group of plants are bordered pits found in the xylem vessels?

Which of the following is absent in the primary and secondary structure of the stem of $Pinus$?

Medullary rays are seen in