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Solutions ⇒ Class 9th ⇒ Science ⇒ 7. Diversity in Living Organisms

Solutions 7. Diversity in Living Organisms - Chapter Review | Class 9 Science - Toppers Study

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Solutions 7. Diversity in Living Organisms - Chapter Review | Class 9 Science - Toppers Study

CBSE board students who preparing for class 9 ncert solutions maths and Science solved exercise chapter 7. Diversity in Living Organisms available and this helps in upcoming exams 2022-2023.

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Chapter 7 Science class 9

Chapter Review class 9 Science Chapter 7. Diversity in Living Organisms

7. Diversity in Living Organisms

| Chapter Review |

Solutions 7. Diversity in Living Organisms - Chapter Review | Class 9 Science - Toppers Study


Chapter Review:  

  • A eukaryotic cell has membrane-bound organelles, including a nucleus, which allow cellular processes to be carried out efficiently in isolation from each other.
  • Organisms which do not have a clearly demarcated nucleus and other organelles would need to have their biochemical pathways organised in very different ways.
  • Nucleated cells would have the capacity to participate in making a multicellular organism because they can take up specialised functions.
  • Cells that group together to form a single organism use the principle of division of labour.
  • Groups of cells will carry out specialised functions.
  • Organisms that perform photosynthesis are called plants
  • Some groups of organisms which have ancient body designs that have not changed very much are called as ‘primitive’ or ‘lower
    organisms.
  • Some other groups of organisms that have acquired their particular body designs relatively recently are called ‘advanced’ or ‘higher’ organisms.
  • There is a possibility that complexity in design will increase over evolutionary time, it may not be wrong to say that older organisms are simpler, while younger organisms are more complex.
  • The warm and humid tropical regions of the earth, between the tropic of Cancer and the tropic of Capricorn, are rich in diversity of plant and animal life. This is called the region of megadiversity.
  • Rough estimates state that there are about ten million species on the planet, although we actually know only one or two millions of them.
  • All living organisms are categorised into broad categories, called kingdoms.
  • There are five kindoms in the classification proposed by Whittaker: Monera, Protista, Fungi, Plantae and Animalia.
  • Kingdoms further divides into phylum for animals and divisions for plants
  •  

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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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