Oligochaetes - feeding and digestion in annelids, Biology

Oligochaetes - Feeding and Digestion in Annelids

In between annelids, the oligochaetes which comprise mostly earthworms, feed on dead, decomposing organic vegetation. They as well digest organic matter contained in the soil which they swallow during burrowing. Aquatic forms feed on detritus, algae and microorganisms. Freshwater forms like Aeolosoma collect detritus along with its prostomium. The food is collected by making a partial vacuum when the ciliated ventral surface of prostomium is placed against the substratum and the center is elevated through muscular contraction. So, the partial vacuum created releases the food particles which are swept into mouth by cilia. Some oligochaetes such as Chaetogaster catch amoebae, ciliates, rotifers and trematode larvae via the sucking action of pharynx.

Posted Date: 2/4/2013 3:05:06 AM | Location : United States







Related Discussions:- Oligochaetes - feeding and digestion in annelids, Assignment Help, Ask Question on Oligochaetes - feeding and digestion in annelids, Get Answer, Expert's Help, Oligochaetes - feeding and digestion in annelids Discussions

Write discussion on Oligochaetes - feeding and digestion in annelids
Your posts are moderated
Related Questions
Updating by Deletion DELETE FROM ENROLMENT WHERE StudentId = SID ('S4'); As you can see, this differs from Example by the addition of the noise word FROM. The expression SI

Q. What are the main intraspecific ecological interactions? The major harmonious intraspecific ecological interactions are societies and colonies. The major inharmonious intras

Define Aerobic Exercise or Aerobic Energy System? To produce necessary energy, the body uses an aerobic pathway and an anaerobic pathway. Exercise that relies heavily on oxygen

Q. In general what is the phase of the menstrual cycle when copulation may lead to fecundation? Although this is not a rule, to be effective fecundation in general must occur w

Define Nitrogen Estimation - Kjeldahl's Method? Nitrogen in the protein is estimated by a method referred to as Kjeldahl's method. Although over a period of time many other met

SMOKIN G - It means to draw tobacco smoke into the mouth or lungs & exhale it via mouth, nostrils or both. Tobacco is obtained from Nicotiana tobacum & Nicotiana r

classifcation of protozoans

Explain disease typhoid Typhoid is often called enteric  fever because the infection or bacteria is found in the intestines and attaches itself to the epithelium of  the intes

S n ake bite Biting by a poisonous snake is manifested by clinical findings of local swelling and nervous symptoms. E t iology: The poisonous snakes have different typ

Factors Affecting Osseointegration a) Biocompatibility of the material b) Surgical technique- c) Bone density - d) Occlusal load e) Infection f) Implant surface