Morphology and Anatomy of Earthworm

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Morphology and Anatomy of Earthworm: Overview

This topic covers concepts, such as, External Morphology of Earthworm, Digestive System of Earthworm, Excretory System of Earthworm & Nervous System of Earthworm etc.

Important Questions on Morphology and Anatomy of Earthworm

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Following are the statements about prostomium of earthworm.
(a) It serves as a covering for the mouth.
(b) It helps to open cracks in the soil into which it can crawl.
(c) It is one of the sensory structures.
(d) It is the first body segment.

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In which one of the following organisms its excretory organs are correctly stated

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Match the following with reference to earthworm

  List-I   List-II
(a) 4-6th segments (i) Cingulum
(b) 14-16th segments (ii) Stomach
(c) 9-14th  segments (iii) Blood glands
(d) 10-11th segments (iv) Testes

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Earthworm has ------------------.

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Brain in earthworm is formed of

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Which is correct about earthworm ?

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The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It is an adaptation for

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Pharyngeal nephridia of Pheretima are found in segments:

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Which of the following is exonephric nephridia?

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Which organ in earthworm is analogous to kidney of man?

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Origin of nephridia in earthworm is

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Chloragogen cells found in coelomic fluid of earthworms are analogous to vertebrate

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Septal nephridia of earthworm pour excretory matter into

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In earthworm, the "forest of nephridia" is in

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Clitellar segments in earthworm are:

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Chromophil cells in earthworm take part in secretion of mucus and are found in

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In earthworm, the stomach is situated in

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Gizzard in Pheretima is an organ