Question

What is suberin?

Answer 1

A tissue is a collection of cells with similar structures that collaborate to accomplish a common purpose. Plant tissues are divided into two categories: permanent and meristematic tissues.
Meristematic tissue- These tissues have the ability to divide quickly in order to grow. They contribute to the vegetation's major growth. These cells are responsible for the plant's growth in length and diameter. Meristematic cells have a big nucleus and are living cubical cells.
Permanent tissue- These cells have lost their ability to disseminate, but they have become specialised to provide the plant with elasticity, flexibility, and strength.

Complete answer:
The cork cells, or phellem, are dead, with a fatty material called suberin deposited on them. It's a biopolymer made of polyester. Cork cells have been suberized. This chemical is necessary for the formation of a protective barrier. Because suberin is water-resistant, phellem is buoyant, or floats on water.
Suberin, cutin, and lignins are complex cell-wall macromolecules found in the epidermis and periderm of higher plants that form a protective barrier. Suberin is a lipophilic polyester biopolymer made up of long chain fatty acids known as suberin acids and glycerol. Lipids and carbohydrates are covalently bonded to suberins and lignins, respectively, whereas lignin is covalently attached to suberins. Suberin, named after the cork oak Quercus suber, is a key component of cork. Its primary role is to prevent water and solutes from moving through it.

Note:
The following are the two major criteria for classifying plant tissues.
They can be found in many areas of the plant.
Based on the kind of cells they contain.
Plant Tissues are classified based on their location.
Epidermal tissues – A single layer of cells covers the exterior of a plant.
Ground tissues –It protects a plant's interior.
Vascular tissues – Transports water and dissolved substances inside the plant.
Plant tissues are divided into groups based on the kind of cells they contain.
Meristematic – There are three major types
Permanent – There are two major types under this named Simple and Complex. Simple is further divided into three types named parenchyma, collenchyma, and sclerenchyma. The Xylem and Phloem kinds of the complex are further differentiated.