Abhishek Pandey posted an Question
April 15, 2021 • 02:46 am 30 points
  • CSIR NET
  • Life Sciences

Achcha what difference between metanephridia and protonephridia

1 Answer(s) Answer Now
  • 0 Likes
  • 1 Comments
  • 0 Shares
  • comment-profile-img>
    Krishan k jakhad best-answer

    protonephridium (proto = "first") e.g. in flatworm is a network of dead-end tubules lacking internal openings, found in the phyla Platyhelminthes, Nemertea, Rotifera and Chordata  (lancelets). The ends are called flame cells (if ciliated) or solenocytes (if flagellated); they function in osmoregulation.  metanephridium (meta = "after") e.g. in earthworm is a type of excretory gland found in many types of invertebrates ... annelids, arthropods and mollusca. (In mollusca, it is called Bojanus organ.) A metanephridium typically consists of a ciliated funnel opening into the body cavity, or coelom connected to a duct which may be variously glandularized, folded or expanded and which typically opens to the organism's exterior.

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers