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What is diatomaceous earth? Mention any ...

What is diatomaceous earth? Mention any two economic uses of it.

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ASSAM ACADEMIC CENTRE-BIOLOGICAL CLASSIFICATION-EXAMPLE
  1. Name the groups of photosynthetic protists.

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  2. Which of them forms the major phytoplanktons in the oceans?

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  3. What is diatomaceous earth? Mention any two economic uses of it.

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  4. Differentiate between chrysophytes and dinoflagellates.

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  5. How do dinoflagellates differ from euglenoids?

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  6. Bring out the difference between euglenoids and chrysophytes.

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  7. Mention the criteria used for classifying Kingdom Fungi into classes.

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  8. How is a zygospore different from the sporangiospore in fungi?

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  9. Mention any four aconomic uses of Ascomycetes.

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  10. How are ascospores and conidia, both produced by ascomycetes, differen...

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  11. Differentiate between Ascomycetes and Basidlomycets.

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  12. Differentiate between Ascomycetes and Basidlomycets.

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  13. Why are Deuteromycetes commonly known as imperfect fungi? Mention two ...

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  14. What is meant by 'contagium vivum fluidum'? Who gave this idea?

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  15. Why are viruses called obligate intracellular parasites?

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  16. Name a virus that has single-stranded RNA as genetic material.

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  17. Mention any four symptoms of viral diseases in plants.

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  18. Who proposed the five-kingdom classification? Name the five kingdoms.

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  19. Describe the three groups of Archaecbacteria.

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  20. Draw a well-labelled diagram of Euglena.

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