What is a group of different tissues working together called?
An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.
What are tissues organs and organ systems?
Organ Systems and Organs
- Organ system — a group of organs that contribute to specific functions within the body.
- Organ — a group of tissues precisely arranged so that they can work together to perform specific functions.
- Tissue — a group of cells with similar structure and function.
- Cell — the smallest living units in the body.
What are the 5 levels of organization in order?
There are five levels: cells, tissue, organs, organ systems, and organisms.
What type of tissue holds organs together?
What are the four tissue types?
There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).
What are the 5 types of tissue?
- Introduction to cells and tissues Epithelial tissue Connective tissue Nervous tissue Muscle tissue Cartilage and bone.
- Fetal tissues.
What is the strongest type of tissue?
Collagen: Collagen fibers are the strongest and most abundant of all the connective tissue fibers. Collagen fibers are fibrous proteins and are secreted into the extracellular space and they provide high tensile strength to the matrix.
What is tissue class 9?
A tissue is defined as a cluster of cells which are similar in structure and work together to perform a particular function. 2. The use of tissues in multicellular organisms is to provide structural and mechanical strength as well as to allow division of labour.
What is tissue class 9 short answer?
Answer: A group of cells that are similar in structure and work together to do a peculiar function is called tissue.
What is differentiation Class 9?
The process in which the meristematic tissues take a permanent shape, size and function is known as differentiation. This implies the cells of meristematic tissues differentiate to form different types of permanent tissues.
What is epidermis class 9th?
Epidermis: It is the outermost protective layer of plant organs. The epidermis is usually made of a single layer of cells. Cells of epidermis are elongated and flattened, without intercellular space. In leaves, epidermis bears small pores called stomata.
What is the function of stomata Class 9?
The major function of stomata is the exchange of gases by taking carbon dioxide from the atmosphere and giving out oxygen that is used by human beings and animals. They help in photosynthesis and transpiration.
What are the different types of meristematic tissue class 9?
Types of meristematic tissue are apical meristem, Intercalary meristem, lateral meristem.
- Apical meristem is present on root and shoot tips of the plant.
- Intercalary meristem is present on leaf base and nodes.
- Lateral meristem is responsible for increase in circumference i.e. girth of the stem or root of the plant.
What is the function of meristematic tissue class 9?
Meristematic tissues are responsible for growth in plants. Cells in these tissues can divide and form new cells.
What is the main function of meristematic tissue?
Meristematic tissues are responsible for plant growth. They are present at the tips of roots,stem and branches. The cells present in these tissues constantly divide to produce new cells. The cells actively divide to produce new cells.
What is meristematic tissue explain with diagram?
Meristematic cells are all living cells. The meristematic cells can be oval or rounded or polygonal in shape. They have a large nucleus with no vacuoles. Intercellular space between cells is absent.
What are three types of meristematic tissue?
There are three primary meristems: the protoderm, which will become the epidermis; the ground meristem, which will form the ground tissues comprising parenchyma, collenchyma, and sclerenchyma cells; and the procambium, which will become the vascular tissues (xylem and phloem).
What is simple permanent tissue?
Simple permanent tissues are a group of cells which are similar in origin, structure and function. They are of three types:- a) Parenchyma- are unspecialised living cells which have thin cell walls and are loosely packed so that the intercellular spaces are found between cells of this tissue.
What is meant by permanent tissue?
: plant tissue that has completed its growth and differentiation and is usually incapable of meristematic activity.
What is difference between Meristematic and permanent tissue?
Difference between Meristematic and Permanent Tissue Meristematic tissues in plants consist of a mass of undifferentiated cells whose main function is to participate in plant growth. Permanent tissues, on the other hand, are differentiated tissues, carrying out dedicated functions.
What are the characteristic of permanent tissue?
Characteristic features of permanent tissues: (i) Cells may be living or dead. (ii) Cell walls may be thin or thick. (iii) Cells may contain reserve, excretory or secretory substances.
Where is permanent tissue found?
Permanent tissues are found in all mature plants. Depending upon their structure and site of origin, they carry out various important functions within the plant body. Simple permanent tissues are found below the epidermis of the plant, spread around in layers of cells.
Are Meristematic tissues permanent?
Cells of the meristematic tissue are found in meristems, which are plant regions of continuous cell division and growth. Meristems produce cells that quickly differentiate, or specialize, and become permanent tissue. Such cells take on specific roles and lose their ability to divide further.
What are the 2 types of plant tissue?
Plant tissue systems fall into one of two general types: meristematic tissue, and permanent (or non-meristematic) tissue. Meristematic tissue is analagous to stem cells in animals: meristematic cells are undifferentiated continue to divide and contribute to the growth of the plant.
What is meristematic tissue and its types?
Meristematic tissues, or simply meristems, are tissues in which the cells remain forever young and divide actively throughout the life of the plant. A plant has four kinds of meristems: the apical meristem and three kinds of lateral—vascular cambium, cork cambium, and intercalary meristem.