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Why do we boil the leaf in alcohol when ...

Why do we boil the leaf in alcohol when we are testing it for starch ?

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LAKHMIR SINGH & MANJIT KAUR-LIFE PROCESSES-Exercise
  1. The leaves of a plant first prepare food A by photosynthesis. Food A t...

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  2. Which substance is used to remove chloropyll from a green leaf during ...

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  3. Why do we boil the leaf in alcohol when we are testing it for starch ?

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  4. (a) Name the pigment in leaves which absorbs sunlight energy. (b) Wh...

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  5. Name the pigment which can absorb solar energy.

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  6. Name the organelle of plant cells in which photosynthesis occurs

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  7. Apart from carbon dioxide and water, name four other raw material whic...

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  8. Where is chlorophyll mainly present in a plant ?

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  9. What is the name of those cells in the leaf of a plant which control t...

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  10. Name an animal whose process of obtaining food is called phagocytosis

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  11. All the animals can be divided into three groups on the basis of their...

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  12. What is the scientific name of the animals which are: (i) only meat ...

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  13. Name the green pigment present in the leaves of a plant

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  14. Arrange the following processes involved in the nutrition in animals i...

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  15. How does Amoeba engulf the food particle ?

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  16. What substance enter into the food vacuole in Amoeba to break down the...

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  17. From which part of the body, undigested food is egested in Amoeba?

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  18. Name a unicellular animal which uses cilia to move food particles into...

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  19. Name the enzyme present in human saliva. What type of food material is...

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  20. Which of the organs perform the following function in human ? (i) Ab...

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