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Earn 100

Mark the incorrectly matched pair
(a)Petromyzon - Body devoid of scales and paired fins
(b)Scoliodon - Operculum present but air bladder is absent
(c)Exocetus - Heart two chamered with sinus venosus
(d)Rana - Cold-blooded with pairs of cranial nerves and mesonephric kidneys

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Important Questions on Animal Kingdom
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Match list 'A' and List 'B' correctly and find your answer from the code given below :
List-A (Animal) |
List-B (Common name) |
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(i) | Physalia | (A) | Brain coral |
(ii) | Pennatula | (B) | Sea fan |
(iii) | Gorgonia | (C) | Sea pen |
(iv) | Meandrina | (D) | Portuguese man of war |

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Which of the following is a gregarious pest?

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Pick the odd pair out:-

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Select the group of organisms given below those have diploblastic members only :-

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The symmetry found in an animal that can be divided into identical left and right halves in only one plane is:-

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Select the pseudocoelomates from the list of organisms given below:-

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A schematic representation of a chordate's embryo is shown in the above figure. The structures marked and are respectively:-

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In which one of the following protochordate notochord present only in the tail of larva?
