Science chapter 17

Answer very briefly. 

1. Define taxonomy. 

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2. What is nematocyst? 

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3. Why coelenterates are called diploblastic animals? 

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4. List the respiratory organs of amphibians. 

Gills

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5. How does locomotion take place in starfish? 

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6. Are jellyfish and starfish similar to fishes? If no justify the answer. 

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7. Why are frogs said to be amphibians?

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Answer briefly. 

1. Give an account on phylum Annelida. 

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2. Differentiate between flat worms and round worms? 

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3. Outline the flow charts of Phylum Chordata. 

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4. List five characteristic features of fishes. 

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5. Comment on the aquatic and terrestrial habits of amphibians. 

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6. How are the limbs of the birds adapted for avian life?

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Answer in detail. 

1. Describe the characteristic features of different Prochordates. 

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2. Give an account on phylum Arthropoda.

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