Q. Sponges are used in surgical operations for absorption of

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Q. Group of animals which have bilateral symmetry are known as Grade

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Q. A fresh water sponge is

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Q. Nematodes lack respiratory system and

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Q. Adult Urochordates are sessile and covered by a layer called

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Q. Internal buds which develop into new sponges are called

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Q. Centipede and millipedes are examples of class

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Q. Notochord is a rod like semi rigid body of

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Q. Chitinous cuticle is secreted by

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Q. Animals which lack tissues organized into organs and are asymmetrical, are from sub kingdom

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Q. Balanoglossus and Saccoglossus belongs to phylum

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Q. Class Arachnida has special appendages on their body called as

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Q. Secretions hardened in polyps and covered by stony cup in

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Q. Family of Octopus is called

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Q. Earliest known bird is

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Q. Gases which swim bladders can fill in their Pharynx are Oxygen, CO2 and

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Q. Gastrovascular cavity for entry of food as well as removal of waste constitutes sac like

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Q. Mode of transport in diploblastic animals is

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Q. Exoskeleton appears on dorsal side of Arthropods in form of

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Q. A layer made of polysaccharide which is non-living, vascular and secreted by epidermis is called

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