GEMMULES IN SPONGES

Published in Zoology
Monday, 17 April 2017 16:58
It is a type of internal bud. Gernmules are formed in fresh water sponges. Eg: Spongilla. During unfavourable conditions the archaeocytes of the body (some people say 'trophocyte' of the body) will group together. These archaeocytes are filled with glycoprotien or lipoprotien. Around this group protective layers are formed.
 
Each gemmule shows a central group of archaeocytes. Around which an inner and outer chitinous layers are present. Around this a pneumatic coat is formed. This coat is supported by small Amphidise speckles. The outer coat shows an opening called 'Micropyle'.
 
When a number of gemmules are formed, the animal disintegrates and all the gemmules are liberated out. They lie in dormant condition on the bottom of the pond.
 
With the advent of favorable conditions the gemmules hatch and develop into new sponges.

Useful Sites

  • NCBI

    National Center for Biotechnology Information
  • LTO

    Lab Tests Online® by AACC
  • ASCP

    American Society for Clinical Pathology
  • ASM

    American Society for Microbiology
  • The Medical Library®

    Project of BioScience.pk
Advertisement

Connect With Us

Contact Us

All comments and suggestions about this web site are very welcome and a valuable source of information for us. Thanks!

Tel: +(92) 302 970 8985-6

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Website: https://www.bioscience.pk

Our Sponsors

The Physio ClubB2BPakistan.com

By using BioScience.pk you agree to our use of cookies to enhance your experience on this website.