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Write about cartilaginous fishes....

Write about cartilaginous fishes.

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Assertion : A bony fish can stay at a particular depth without expending energy is a swimming contrary to the cartilaginous fishes. Reason : In bony fishes, the swim bladder is present which helps in buoyancy.

As compared to cartilaginous fishes, bony fishes have dorsal fin

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Which type of scales are found on the skin of cartilaginous fishes ?

Give the major nitrogenous excretory product which the following organisms excrete ? Hydra, cartilaginous fishes, insects, mammals, land snails, frog, bonyfishes, turtles, land reptiles, earthworm, starfish.

Cartilaginous joints

MODERN PUBLICATION-ANIMAL KINGDOM-REVISION EXERXISES (SHORT ANSWER QUESTIONS)
  1. Give four salient features of Arthropoda.

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  2. Describe charateristic features of chordates.

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  3. Differentiate between prototherians, Metatherians and Eutherians.

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  4. What type of body plan do the following animals have : Hydra, Spong...

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  5. With which animal woould you associate the following : Carapace, mal...

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  6. List three important distinguishing characters of arthropods , reptil...

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  7. Write the general characteristic features of Nemathelminthes.

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  8. Give three reason why snail and Octopus are classified under the same ...

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  9. Name the classes in which living vertebrates have been grouped.

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  10. Write about cartilaginous fishes.

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  11. Give characteristic features amphibians.

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  12. Which of the characters distinguish lizards from the snakes?

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  13. Give an account of egg-laying mammals and marsupials.

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  14. List the characters of primates.

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  15. Justify the statement " Mammals are the most successful and dominant a...

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  16. Differentiate between lizards and snakes.

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  17. How are the mammals advanced over the reptiles?

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  18. Differentiate between cartilage and bony fishes.

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  19. Give peculiar feature of hemichordates. What is their phylogenetic sig...

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  20. Enlist the unique features of phylum Annelids.

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