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Structural Organisation in Animals question

2021 · Q90
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Structural Organisation in Animals question

2021 · Q90

NEETBiologyStructural Organisation in AnimalsMCQ+4 / −1
Following are the statements about prostomium of earthworm.

(1) It serves as a covering for mouth.

(2) It helps to open cracks in the soil into which it can crawl.

(3) It is one of the sensory structures.

(4) It is the first body segment.

Choose the correct answer from the options given below.
  1. A
    (2) and (3) are correct
  2. B
    (1), (2) and (3) are correct
  3. C
    (1), (2) and (4) are correct
  4. D
    (1), (2), (3) and (4) are correct
View written solutionFree

Correct answer: B

∙\bullet∙ The anterior end of the earthworm has mouth which has covering called prostomium.

∙\bullet∙ Prostomium acts as a wedge to force open cracks in the soil.

∙\bullet∙ Prostomium has receptors, so it is sensory in function.

∙\bullet∙ The first body segment of earthworm is the peristomium.

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