Epidermal outgrowths are known as

The rind of $Citrus$ fruit possesses:

$A$ vascular bundle in which a group of xylem and a group of phloem are on the same radius with xylem near the pith and phloem near the cortex and both are not separated by the cambium,is called:

Vascular bundles in which xylem and phloem are situated at the same radius are termed as:

Vessels differ from tracheids in which of the following ways?

The xylem provides mechanical strength to the plant. Which of the following components is responsible for this function?