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5Points Quiz

Which of the following statements best describe the orthonectida?

        A.   Evolutionary intermediate forms between protozoans and metazoans heterotrophic organisms

        B.   Unicellular autotrophic organisms

        C.   Parasites on a wide range of marine invertebrates

        D.   Parasites of cephalopods

Answer: C

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Axoblasts produce ______ in rhombogen stage.

        A.   Nematogens

        B.   Rhombogens

        C.   Inusorigens

        D.   None of the above

Answer: C

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Which of the following statements best describe the members of the class Demospongiae?

        A.   A very small class of leuconoid marine sponges

        B.   Sponges with a purely siliceous skeleton

        C.   Sponges with skeleton consisting solely of calcareous spicules

        D.   Sponges that lack skeleton and if present may be siliceous

Answer: D

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Members of the class selerospongiae have the following features except _____.

        A.   They are similar to demospongiae

        B.   Their choanocytes are small and lack jelly

        C.   They are found associated with coral reefs

        D.   Their skeleton is made up of siliceous spicules and sponging fibres

Answer: B

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The following are features of the metazoans except _______.

        A.   Their bodies consists of many cooperating cells

        B.   The principal body opening is inhalant

        C.   Presence of choanocytes

        D.   Possession of sense organs

Answer: C

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Infusori form larvae by ____.

        A.   cell addition

        B.   cell enlargement

        C.   cell formation

        D.   cell multiplication

Answer: B

For More Quiz Questions click here to download Global Quiz on Google PlayStore


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