Differentiate between sapwood and heartwood.

Which of the following are the part of the Periderm?

I. Duramen

II. Phellogen

III. Phellem

IV. Phelloderm

V. Alburnum

The correct answer is

Assertion $\left(\mathrm{A}\right):$ The peripheral region of the secondary xylem is lighter in colour and is known as the sapwood (alburnum).

Reason $\left(\mathrm{R}\right):$ It is involved in the conduction of water and minerals from root to leaf.

The correct answer is:

Consider the following statements with respect to phellogen:

a. It is a couple of layers thick.
b. It is made up of broad, thin-walled, and nearly rectangular cells.
c. It is usually developed in the cortex region.

Which of the statements given above are correct?

Fill in the blank with the correct option provided in the bracket.

Lenticels are present on _____(stem/leaf/root) in plants.

Fill in the blank with the correct option from the bracket.

A meristematic region present between the xylem and phloem of the open vascular bundle is called _____. (interfascicular cambium, intrafascicular cambium, cork cambium)

Fill in the blank with the correct answer from the bracket.

The structures that are extensions of xylem parenchyma cells into vessels is called _____. (tyloses, lenticel, hydahodes)

Fill in the blank with the correct option from the bracket.

Jute fibres are obtained from the _____. (secondary phloem, xylem, endoderms, pith)