Home
Class 12
BIOLOGY
In old dicot stems, a major part of the...

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

A

Hard wood

B

Heart wood

C

Sap wood

D

Soft wood

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Physiologically functional part of wood is

In some old trees, though the central part (heart wood) is lost, the plant survives because

oldest part of phloem in a dicot stem is situated just

The major part of cell wall of monerans (Bacteria and Cyanobacteria) is made up of a polymer called

[A] : Macrophage is a large amoeboid cell that can engulf, ingest and destroy bacteria, damaged cells and worn-out red blood cells. This process is called phagocytosis and is an important part of the body s defence against disease. [R]: Macrophages are found free (wandering) in the tissues, in connective tissue (as histiocytes), in the lining of the blood sinusoids of the liver (as Kupffer cells), and in lymphoid tissue. They make up the reticulo-endothelial system.

Assertion: Heart wood is not involved in conduction function. Reason: Tyloses and depositions of tannins, resins, and gums is common in duramen cells.

The layer of thin walled cells which separates the wood from phloem in dicot plants is called

A strong, sharp-pointed woody structure mostly arising from the wood and have connection with xylem elements of a stem, is called :

In (i) porous wood, vessel are very broad in the (ii) wood and are quite narrow in the (iii) wood. This kind of wood is present in (iv) and it translocates (v) amount of water when required by the plant. Select the correct fill ups for the above paragraph.

The part of Ti Plasmid is transferred by Agrobacterium in dicot plant is called.