In old dicot stems,a major part of the wood i | vedclass

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

Question

(B) In older dicot stems,the secondary xylem in the central or innermost region becomes dark brown due to the deposition of organic compounds like tan

Vedclass · Accepted Answer

Heart wood

Vedclass · Answer

(B) In older dicot stems,the secondary xylem in the central or innermost region becomes dark brown due to the deposition of organic compounds like tannins,resins,oils,gums,aromatic substances,and essential oils. These substances make the wood hard,durable,and resistant to the attacks of microorganisms and insects. This region is known as heartwood or duramen. It does not conduct water but provides mechanical support to the stem.

In old dicot stems,a major part of the wood is filled up with tannins,resins,gums,etc. This part of the wood is called:

Similar Questions

Which of the following tissues originates from the vascular ray initials?

The tissue made up of thin-walled rectangular cells responsible for the secondary growth is

What is the commercial source of cork? How is it formed in the plant?

Ring bark is present in

In an annual ring,the light coloured part is known as

Vedclass Test Series

Exam Paper Generator

Online Exam Module