Common bottle cork is product of-a. Xylemb. Dermatogenc. Phellogend. Vascular cambium

The correct answer is C. Phellogen.
Cork is produced by the phellogen, which is also known as the cork cambium. It is a lateral meristematic tissue responsible for producing cork cells in plants.
Detailed Breakdown:
1. Phellogen (Cork Cambium):
o The phellogen is a layer of meristematic tissue that forms in the outer regions of the plant, typically in the stems or roots of woody plants.
o It produces cork cells (phellem) towards the outside and phelloderm towards the inside. The cork cells are dead at maturity and are filled with suberin, a waxy substance that makes them impermeable to water and gases.
o The cork formed by phellogen is the material that makes up the bark of trees and is commonly used for products such as bottle corks.
2. Xylem:
o Xylem is responsible for the transport of water and minerals in plants, but it does not produce cork. Xylem is primarily composed of tracheids, vessels, fibers, and xylem parenchyma.
3. Dermatogen:
o Dermatogen is a term used to describe the outermost layer of the apical meristem in plants, which gives rise to the epidermis. It is not involved in cork production.
4. Vascular Cambium:
o The vascular cambium is a lateral meristem that produces secondary xylem (wood) and secondary phloem. It is responsible for the thickening of stems and roots in dicots and gymnosperms but does not produce cork.
The common bottle cork is a product of the phellogen (cork cambium), making C. Phellogen the correct answer.