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What criteria do we use to decide whethe...

What criteria do we use to decide whether something is alive?

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We can decide whether something is alive (or living) by using the following characteristics of livings things :
(i) Living things can move by themselves.
(ii) Living things need food, air and water.
(iii) Living things can grow
(iv) Living things can respond to changes around them. They are sensitive.
(v) Living things respire (release energy from food).
(vi) Living things excrete (get rid of waste materials from their body).
(vii) Living things can reproduce. They can have young ones.
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LAKHMIR SINGH & MANJIT KAUR-LIFE PROCESSES-Exercise
  1. The organs A of a person have been damaged completely due to which too...

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  2. Why is diffusion insufficient to meet the oxygen requirements of multi...

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  3. What criteria do we use to decide whether something is alive?

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  4. What are outside raw materials used for by an organism?

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  5. What processes would you consider essential for maintaining life?

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  6. What are the differences between autotrophic nutrition and heterotroph...

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  7. Where do plants get each of the raw materials required for photosynthe...

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  8. What is the role of the acid in our stomach?

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  9. What is the function of digestive enzymes?

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  10. How is the small intestine designed to absorb digested food?

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  11. What advantage over an aquatic organism does a terrestrial organism ha...

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  12. What are the different ways in which glucose is oxidised to provide en...

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  13. How is oxygen and carbon dioxide transported in human beings?

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  14. How are the lungs designed in human beings to maximise the area for ex...

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  15. What are the components of the transport system in human beings? What ...

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  16. Why is it necessary to separate oxygenated and deoxygenated blood in m...

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  17. What are the components of the transport system in highly organised pl...

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  18. How are water and minerals transported in plants?

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  19. How is food transported in plants?

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  20. Describe the structure and functioning of nephrons.

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