Gastropods - feeding and digestion in molluscs, Biology

Gastropods - Feeding and Digestion in Molluscs

In several gastropods the digestion is extracellular. Though, some herbivore gastropods like Crepidula are ciliary feeders and have a digestive system identical to that of lamellibranchs. In them amylase is the just only extracellular enzyme; the digestive diverticula do not secrete any enzyme but are only absorptive in function. Crepidula has as well a crystalline style similar to those of lamellibranchs. Some herbivorous gastropods relating to Taenioglossa, Rapido Glossa and Pteropoda as well possess crystalline style. It is confined to those herbivorous gastropods that are microphagous feeders, involving rasping feeders that use radula. Patella, Haliotis, Aplysia and Helix are some another herbivorous gastropods that do not possess a crystalline style. Essentially in those forms in which extracellular digestion has replaced intracellular digestion, a crystalline style is not present.

Posted Date: 2/4/2013 3:13:04 AM | Location : United States

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

Write discussion on Gastropods - feeding and digestion in molluscs
Your posts are moderated
Related Questions
Which statement below about asexual reproduction is FALSE? a.With asexual reproduction, offspring are genetically identical to the parent. b.Asexual reproduction requires no

ADP-ATP system  of energy  exchange : In 1929 Lohmann, Fiske and  subbarow  published  their  discovery  that the energy  exchanges  compounds in all biological  systems  are t

Q. PH of food in pectic ulcer? PH of food: It has. a little therapeutic importance except for patients with lesions in the mouth or oesophagus. Most foods are considerably les

Water Pollution Water is one of the most essential requirements for the survival of all living organisms. Water is used for household, agricultural, industrial and recreation

A solute passes from higher concentration on the left of a container to the right side of container thru a membrane. What would happen if a second solute of lower concentration was

Q. What is the difference between spermatocyte I and spermatogonium? The male germ cells are the spermatogonia (diploid cells, 2n) situated in the testicles and they mature an

Explain the term- PUPIL Pupil is  the  aperture in  centre of  the  iris diaphragm that regulates entry  of  light into the eye. Colour of  pupil  is  said  to be  black. Actu

6. What is the function of the myelin sheath? Do all axons present a myelin sheath?

Explain Atazanavir Atazanavir (ATV, Reyataz) - Atazanavir (Medical Letter 2003; 45:89) is the first single-agent protease inhibitor with once-daily dosing. In clinical trials