Zoology Questions

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The superficial cleavage pattern is a characteristic feature of

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A solid ball of cells formed after cleavage is called

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A hollow ball of cells with a central fluid-filled cavity is

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The process by which the three germ layers (ectoderm, mesoderm, endoderm) are formed

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The central cavity formed during gastrulation that becomes the primitive gut

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In Protostomes (e.g., Annelids, Arthropods, Mollusks), the blastopore forms the

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In Deuterostomes (e.g., Echinoderms, Chordates), the blastopore forms the

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The nervous system and skin epidermis develop from which germ layer?

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The skeletal, muscular, and circulatory systems develop from which germ layer?

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The lining of the digestive tract and respiratory system develop from

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The extraembryonic membrane that surrounds the embryo and contains fluid for protection

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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 extraembryonic membrane that stores nitrogenous waste in birds and reptiles is

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In chick embryology, the structure that establishes the anterior-posterior axis is the

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The organizer in amphibian development (Spemann organizer) corresponds to the

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The process by which one embryonic tissue influences the development of another is called

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The phenomenon of programmed cell death essential during development (e.g., removing webbing between fingers)

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Regeneration of a lost body part (like a lizard's tail) is an example of

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Reorganization of the entire body to regenerate missing parts (like in Hydra) is

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Parthenogenesis is a form of reproduction where