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Cartilage fishes are marine, have placoi...

Cartilage fishes are marine, have placoid scales and homocercal tail fin.

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A homocercal tail is found in

Placoid scales are found is

Placoid scales are found in

Placoid scales are found in

Placoid scales occur in

Placoid scales are found in :

Cartilage fish are always marine and are always ammonotelic/Ureotetic.

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MODERN PUBLICATION-ANIMAL KINGDOM-QUICK MEMORY TEST (TRUE AND FALSE)
  1. Flatworms have true coelom.

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  2. Sponges have tube-within-a-tube body plan.

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  3. Snails and slugs have open circulatory system.

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  4. Pseudocoel is found in flatworms and roundworms.

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  5. Housefly have sponging mouth parts while mosquito has piercing-sucking...

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  6. Tornaria is the larva of echinoderms while bipinnaria is the larva of ...

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  7. Aristotle's lantern is a masticatory apparatus of echinoids.

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  8. Cephalothorax is formed only in crustaceans.

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  9. Sacculina causes parasitic castration in the crabs.

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  10. Smallest mammal is water shrew while tallest mammal is giraffe.

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  11. Eudynamis builds a fancy nest.

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  12. Archaeopteryx is a connecting link between :

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  13. Kiwi is the smallest flightless bird.

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  14. Millipedes possess 70 to 100 pairs of legs.

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  15. The body of the molluscs is hard but is covered by a soft shell.

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  16. Thr fertilization in majority of echinoderms occurs in open water.

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  17. The echinoderms donot show any fundamental similarities with chordates...

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  18. Cartilage fishes are marine, have placoid scales and homocercal tail f...

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  19. Protostomic plan is observed in annelids, arthropods and molluscs.

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  20. Frog has 10 pairs and man has 12 pairs of cranial nerves.

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