Xylem element

Consider the following statement and choose the correct option The thread like cytoplasmic strands, running from one cell to other is known as plasmodesmata (ii) Xylem and phloem constitute the vascular bundle of the stem (iii)The first form xylem elements are described as metaxylem (iv) Radial vascular bundles are mainly found in the leaves

The phenomenon which forces water upwards into tracheary elements of xylem in the root region is

Xylem consists of mainly dead elements.

Name the different types of elements found in the xylem.

Assertion: The greater part of secondary xylem is lighter in colour and consists of dead elements with highly lignified walls and is called heartwood.