List the economic importance of earthworm.

Important Questions on Animal Diversity- I (Invertebrate Phyla)

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

The spermatheca, which receive and store spermatozoa in pheretima are present in

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Enlist the importance of Vermicomposting.

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

What is manure? State two advantages of using manure. How is green manure different from ordinary manure?

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Explain the mechanism of compost formation.

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Describe the process of Farm Yard Manure (FYM)? How it is prepare?

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Write down two advantages of fertilizer over manure.

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Differentiate between manures and fertilizers.

EASY

Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

What are manures? What are the functions of manures?

EASY

Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Why some plants like sun hemp or guar are grown and mulched by ploughing into the soil before sowing of the crop seeds?

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Explain what will happen if in a cultivated field only manures are supplied and in another field only fertilizers are supplied, keeping all other conditions similar.

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Find out the correct statement about manure:
(i) It contains large quantities of organic matter and small quantities of synthetic nutrients.
(ii) It increases the water holding capacity of sandy soil.
(iii) It helps in draining out excess of water from clayey soil.
(iv) Its excessive use pollutes environment because it is made of animal excretory waste.

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

What is “green manure”?

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

What is green manuring? Give suitable examples of green manures.

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

State two advantages and disadvantages of manures.

EASY

Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Enlist two functions of manures.

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Define vermicompost.

EASY

Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

What are advantages of using manure?

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

What are the differences between manures and fertilizers?

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

How do manures and fertilizers help in maintaining soil fertility?

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Biology>Diversity in the Living World>Animal Diversity- I (Invertebrate Phyla)>Phylum: Annelida

Compare the use of manures and fertilizers in maintaining soil fertility.