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Which of the following is correct about Cyclostomata?
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Important Questions on Animal Kingdom
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Select the correct match.
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Animals belonging to phylum Chordata are fundamentally characterised by the presence of structure noted as and D. Identify and D.
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Observe the following diagrams and pick the correct option.
(a) 
(b) 
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Water from the two tanks shown in the diagram was tested 3 hours after they were stocked with indicated animals. The predominant nitrogenous waste detected in Tank-I and Tank-II respectively would be
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I. In Urochordates like Ascidia, Salpa, Doliolum possess notochord only in their larva's tail.
II. In Cephalochordates like Branchiostoma (Amphioxus or Lancelet) notochord extends from anterior to posterior region of the body and persists throughout the life.
III. All vertebrates are chordates, but all chordates are not vertebrates.
IV. Notochord is replaced by vertebral column invertebrates.
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II. They have no external ear or pinna.
III. Crawling/creeping habit.
IV. Three chambered heart
The above characters are associated with;
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