Q. Amphioxus is a sub-phylum

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Q. Best commercial sponges are found in warm waters of

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Q. Sieve-like plate structure which helps in circulation water through channels is called

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Q. Body of sponges possess a single carity called

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Q. Ability to reform its lost organ in animals is called as

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Q. Sexual reproducing Platyhelminthes consists of both male and female organ on same individual, hence called

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Q. Fetus inside mother is nourished via

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Q. Stinging cells which are produced from cnidocytes are called

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Q. Aggregation of individuals that perform different functions constitute a

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Q. Extensions of lungs which are extended in bones are known as

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Q. A fossil was found in Texas which was an early reptile, is

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Q. Respiratory system of hemichordates is composed of

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Q. Mesentries are prominent in enteron of body of the

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Q. Asexual reproduction in sponge is done by process of

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Q. Pouched mammals are called

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Q. There are two types of muscles in annelids on basis of arrangement of

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Q. Setae are organs of

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Q. Oviducts and ovaries are both functional in

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Q. There is gelatinous layer mesenchyme which is present between pinachoderm and

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Q. Name Platyhelminthes means

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