In old trees,the greater part of secondary xy | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) In old trees,the greater part of secondary xylem is dark brown due to the deposition of organic compounds like tannins,resins,oils,gums,aromatic s

Vedclass · Accepted Answer

Deposition of organic material

Vedclass · Answer

(B) In old trees,the greater part of secondary xylem is dark brown due to the deposition of organic compounds like tannins,resins,oils,gums,aromatic substances,and essential oils in the central or innermost layers of the stem.These substances make the wood hard,durable,and resistant to the attacks of microorganisms and insects.This region comprises dead elements with highly lignified walls and is called heartwood.

In old trees,the greater part of secondary xylem is dark brown due to the

Similar Questions

What is the study of $Dendrochronology$?

In dicot stem,secondary xylem lies towards the ...$A$... and secondary phloem lies towards the ...$B$.... Choose the correct combination of options for $A$ and $B$.

An annual ring is formed by

Differentiate between Heartwood and Sapwood.

The secondary growth in the stem of $Cycas$ is brought about by:

Vedclass Test Series

Exam Paper Generator

Online Exam Module