Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • The excretory system of earthworm consists of segmentally arranged coiled tubes called  Option: 1 Malpighian tubules  <

The excretory system of earthworm consists of segmentally arranged coiled tubes called

 

Option: 1

Malpighian tubules

 


Option: 2

Nephridiophores

 


Option: 3

Nephridia

 


Option: 4

Coelomic extensions


Answers (1)

best_answer

 Excretory system of Earthworm

  • The excretory system of earthworm consists of segmentally arranged coiled tubes called nephridia.
  • The major function of nephridia is to regulate the volume and composition of body fluids. 
  • A nephridium starts as a funnel that collects excess fluid from the coelomic chamber.
  • The tubular part of the nephridium delivers the wastes through a pore to the surface of the body wall into the digestive tube.
  • The nephridia are of three types i.e. pharyngeal nephridia, integumentary nephridia and septal nephridia
  • Pharyngeal nephridia
  • It is present as three paired tufts in the 4th, 5th and 6th segments on either side of the pharynx and esophagus.
  • They open into the buccal cavity and pharynx.


Integumentary nephridia 

  • These are V-shaped nephridia attached to the lining of the body wall of segment 3 to the last which open to the outside through nephridiopores 
  • These nephridiopores are minute openings present on the body surface. 

Septal nephridia

  • These are the largest nephridia in earthworm.
  • These are arranged along the sides of the intersegmental septum from the 15th segment onwards.
  • These open into the intestines.

 

- The excretory system of earthworm consists of segmentally arranged coiled tubes called nephridia.

Posted by

rishi.raj

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NEET: CBI takes over case of aspirant's death in Patna hostel; FIR registered
anam-khan

NEET 2026 LIVE: UG registration begins at neet.nta.nic.in; documents, photograph, exam schedule, admit card
anam-khan

NEET: Protest at Jantar Mantar seeks impartial probe into student's death in Patna

Latest Question