$I.$ It is resistant to microorganisms

$II.$ It comprises dead elements

$III.$ It comprises highly lignified cell wall

$IV.$ It is the peripheral part

$V.$ It is dark and tough

Which of the above property doesn't belongs to heart wood?

Wood is a common name of

$I.$ Protection of internal tissues

$II.$ Protection of leaves from microbes

$III.$ Gaseous exchange

$IV.$ Reduction in the rate of transpiration through epidermal cells due to trichomes

Which of the function of epidermis is/are relevant from the above given statements?

Narrow bands of parenchymatous tissue which passes through the secondary xylem and phloem radially are called

Normal secondary growth occurs in