Selina Solutions for Class 7 Biology Chapter 1 Plant and Animal Tissues
Concise Selina Solutions for Class 7 Biology Chapter 1 Plant and Animal Tissues
A group of cells having common origin, similar structure and performing a definite function is called a tissue. Tissues are found in plants and animals. Plants and animals are made up of many different kinds of tissues. For example, groups of bone cells form bone tissues, and muscle cells form muscle tissue. Different types of tissues have distinctive architecture best suited for what they do. We will see that plant tissues are different from animal tissues in many ways.
Plant tissues include xylem, phloem, collenchyma, sclerenchyma, epidermis and meristematic tissue. Animal tissues include epithelial tissue, connective tissue, muscle tissue and nerve tissue.
In-plant anatomy, tissues are categorized broadly into three tissue systems: the epidermis, the ground tissue, and the vascular tissue. Epidermis - cells forming the outer surface of the leaves and the young plant body. Vascular tissue - The primary components of vascular tissue are the xylem and phloem.
A tissue is a group of connected cells that have a similar function within an organism. There are four basic types of tissue in the body of all animals, including the human body. These tissues make up all the organs, structures and other contents of the body. The figure below shows an example of each tissue type.