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Solutions ⇒ Class 9th ⇒ Science ⇒ 6. Tissues

Solutions 6. Tissues - Chapter Review | Class 9 Science - Toppers Study

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6. Tissues

| Chapter Review |

Solutions 6. Tissues - Chapter Review | Class 9 Science - Toppers Study


Chapter Review:


  • A group of cells having similar functions and similar structure is known as tissue. 

  • The growth of plants occurs only in certain specific regions. This is because the dividing tissue, also known as meristematic tissue.

  • The xylem carries water and minerals obtained from the soil to the plant.

  • Phloem transports products of photosynthesis from the leaves where they are synthesized to other parts of the plant. 

  • There are many small holes in the leaves of plants. These are called stomata.

  • Parenchyma, collenchyma and sclerenchyma are three types of simple tissues.

  • Xylem consist of :- (i) Tracheids (ii) Vessels (iii) Xylem parenchyma (iv) Xylem fibres. 

  • Phloem made up of:- (i) Sieve tubes (ii) Companion cells (iii) Phloem fibre (iv) Phloem parenchyma.

  • The covering or protective tissues in the animal body are epithelial tissues.

  • Cilia are hair-like projections on the outer surfaces of epithelial cells.

  • Plasma is called a fluid matrix of blood.

  •  Blood and bones are connective tissues.

  • Muscular tissue is responsible for movement of our body.

  •  Muscles present in our limbs move when we want them to, and stop when we so decide. Such muscles are called voluntary muscles.

  • The movement of food in the alimentary canal or the contraction and relaxation of blood vessels are involuntary movements. Such muscles are known as involuntary muscles.

  • The muscles of the heart show rhythmic contraction and relaxation throughout life. These involuntary muscles are called cardiac muscles.

  • Nervous tissue is made of neurons that receive and conduct impulses.

  • Two bones can be connected to each other by another type of connective tissue called the ligamen.

  • Striated, unstriated and cardiac are three types of muscle tissues.

     

     

     

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Solutions ⇒ Class 9th ⇒ Science
1. Matter in Our Surroundings
2. Is Matter around us Pure
3. Atoms and Molecules
4. Structure of The Atom
5. The Fundamental Unit of Life
6. Tissues
7. Diversity in Living Organisms
8. Motion
9. Force and Laws of Motion
10. Gravitation
11. Work and Energy
12. Sound
13. Why Do We Fall ill
14. Natural Resources
15. Improvement in Food Resources

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