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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Q. Hydra and obelia are

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Q. 'little ring' is common name for organism of Phylum

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Q. Mode of fertilization in class Pisces is

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Q. Electric shock which can stun a prey is specialized feature of

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Q. Class amphibian, reptilian, aves and mammalian belong to sub-phylum called

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Q. Abdominal pouch of class metatheria is called as

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Q. In Platyhelminthes, respiratory and circulatory system are

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Q. Cnidarians are usually found in two basic forms polyps and the

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Q. Single mouthed sac like digestive cavity in cnidarian is called

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Q. Small pores which help water to enter body of sponges are called

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Q. Giant Squid is largest invertebrate

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Q. A single rotting apple may contain an estimated number of worms i.e.,

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Q. Gills of bony fishes are covered by

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Q. Pore-bearing animals are commonly called

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Q. Arthropods have well developed excretory system, which is composed of

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Q. Mammalian ancestors and reptiles lived together in Jurassic times hence called

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Q. Common name for Madrepora is

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Q. Undulating waves of contraction and relaxation of muscles helps Nematodes in

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