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State the number of segments in earth...

State the number of segments in earthworn which are covered by a prominent dark band or clitellum.

Text Solution

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14th, 15th, and 16th segments (clitellar segments)
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state the number of segments in earthworn which are covered by a promindark band or clitellum.

(a) What is meant by metameric segmentation ? (b) The clitellum represents which segments in earthworm ? (c) How many pairs of spermathecal pores are there in earthworm ? What are their functions ?

Knowledge Check

  • In earthworm, 14^(th) to 16^(th) segments are covered by a prominent dark band of glandular tissue called

    A
    Typhlosole
    B
    Gizzard
    C
    Prostomium
    D
    Clitellum

  • In which segment in earthworm is the clitellum present ?

    A
    16th segment
    B
    17 the to 19th segment
    C
    14 to 16 th segment
    D
    5th to 6th segement

  • which cover the largest number of organisms

    A
    Genus
    B
    family
    C
    class
    D
    Order

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    Conside the following statements in accordance to the excretory system of the earthworm. I. Nepridia is segmentally arranged coiled tublue. II. Nephridia regulates the volume and composition of the body fiuids. III. There are three types of nephridia found in the earthworn. IV. Pharyngel nephridia is present as three paried trufts in the 4th, 5th and 6th segments. Which of the above statements is/ are correct ?

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