A hollow ball of cells with a central fluid-filled cavity is
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A four-chambered heart with double circulation is found inदोहरे परिसंचरण वाला चार-कक्षीय हृदय किसमें पाया जाता है
Birds and Mammals
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The extraembryonic membrane involved in gas exchange (and forms part of the placenta in mammals) is
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The structural and functional unit of the excretory system in vertebrates is
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The forelimbs of birds are modified into
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Reorganization of the entire body to regenerate missing parts (like in Hydra) is
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Book lungs are the respiratory organs of
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Eggs with yolk concentrated in the center (e.g., Insects) are called
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The respiratory organs of insects are
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This question belongs to the set "Top 100 Zoology Questions: Animal Kingdom and Developmental Biology". Click below to read detailed notes and attempt the full quiz.
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