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Tissues - Class 9 PDF Download
needed a Document for tissu?
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Introduction
Till now we studied that all the organisms are made of cells.
On the basis of cell they are divided into unicellular (single-celled) and/or multicellular (two or more celled).
Example-Amoeba (unicellular), in case of amoeba all the functions are carried out by the single cell, whether digestion, excretion, respiration, but in case of human beings or plants (multicellular), all these functions are to different cells rather different tissues or organs or organ systems.
Now the question here arises “How the cells form multicellular organisms? How they are connected to each other? What are the tissues? How they are formed? etc.
So, the answer is that the cells of multicellular organisms grow and divide and form small groups of cells, the groups of cell combine and specialize each other for specic function of the body. These groups or clusters o are called tissues.
Similarly, tissues form groups and combine to form organs and organs then form organ systems.
FAQs on Tissues - Class 9
| 1. What are tissues? |  |
Ans. Tissues are groups of similar cells that work together to perform a specific function in an organism. They are the building blocks of organs and systems in the body.
| 2. How many types of tissues are there in the human body? | |
Ans. There are four main types of tissues in the human body: epithelial tissue, connective tissue, muscle tissue, and nervous tissue. Each type has a distinct structure and function.
| 3. What is the function of epithelial tissue? | |
Ans. Epithelial tissue covers the surfaces of organs and lines body cavities. Its main functions include protection, absorption, secretion, and sensation. It can be found in the skin, respiratory tract, digestive system, and other organs.
| 4. What is the role of connective tissue? | |
Ans. Connective tissue provides support, protection, and structure to the body. It connects and binds different tissues and organs together, and it also helps in the transportation of nutrients and waste materials. Examples of connective tissue include bone, cartilage, blood, and adipose tissue.
| 5. How does muscle tissue function? | |
Ans. Muscle tissue is responsible for movement in the body. There are three types of muscle tissue: skeletal muscle, cardiac muscle, and smooth muscle. Skeletal muscle allows voluntary movements, cardiac muscle pumps blood, and smooth muscle controls involuntary movements in organs like the stomach and blood vessels.
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Dec 16, 2024 Last updated |
Document Description: Tissues - Class 9 for Class 9 2024 is part of Class 9 preparation. The notes and questions for Tissues - Class 9 have been prepared according to the Class 9 exam syllabus. Information about Tissues - Class 9 covers topics like and Tissues - Class 9 Example, for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Tissues - Class 9.
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