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Bacteria cannot be seen with the naked e...

Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes under a microscope, which sample would you carry and why?

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Cut a transverse section of young stem of a plant from your school garden and observe it under the microscope. How would you ascertain whether it is a monocot stem or dicot stem? Give reasons.

MBD -HARYANA BOARD-MICROBES IN HUMAN WELFARE-EXERCISE
  1. Bacteria cannot be seen with the naked eyes, but these can be seen wit...

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  2. Curdling of milk is done by ..................

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  3. Enzyme ............. are used in detergents while fruit juices are cla...

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  4. Presence of more organic wastes in waste water increaso..................

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  5. Biogas is produced during anaerobic fermentation of .....................

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  6. Fill in the blanks with suitable words: Aphids on the mustard plants ...

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  7. Fill in the blanks with suitable words: Nutrient material for wine and...

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  8. State true or false: Fermentation tank where fermentation is carried o...

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  9. Chloremphenicol is extracted from Streptomyces griseus

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  10. Presence of high amounts of organic wastes in the sewage decreases bot...

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  11. State true or false: Organic farming involves the replacement of chemi...

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  12. Single cell proteins are the amounts of proteins produced by gingle ce...

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  13. Coin one word for the following statements : Property of antibiotics t...

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  14. Coin one word for the following statements : Bacteal flocs which aerob...

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  15. Coin one word for the following statements : Viruses which attack and ...

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  16. Coin one word for the following statements : A mixture of gases produc...

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  17. Coin one word for the following statements : Live organisms used to en...

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  18. BGA is chiefly used as fertilizer in

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  19. A biofertilizer is

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  20. Which organism serves as a biofertilizer:

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  21. Azotobacter and Bacillus polymyxa are

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