Explain class bivalvia in animal kingdom, Biology

Assignment Help:

Explain Class Bivalvia in animal kingdom?

This name of this Class reflects the group's most distinguishing feature. Clams, oysters, scallops and mussels all have two shells that are held together by a hinge ligament at the back. One or two muscles (adductor muscles) are used to pull the shells together, forming a tight seal. Scallops are able to "swim" through the water by "clapping" their shells together rhythmically. The mantle secretes the material that makes up the shell. Another bivalve characteristic is a powerful, muscular foot that can be extended great lengths to help them move about or burrow into the sand or mud.

There are other features that distinguish bivalves from the gastropods or cephalopods. Bivalves do not have an anterior head region, and because they filter the water for food, they also lack a rasping radula. Siphons formed by the mantle provide for the circulation of water past the gills for gas exchange and filter feeding. Although most species of bivalves are marine in distribution, many species do live in fresh water.

 


Related Discussions:- Explain class bivalvia in animal kingdom

Studying leaf arrangements, Studying leaf arrangements Observe as many ...

Studying leaf arrangements Observe as many growing plants as possible by looking down on them from above. Draw sketches of the dissimilar patterns of leaf arrangement.

Why is knowledge of chemistry necessary for study, Why is knowledge of chem...

Why is knowledge of chemistry necessary for the study of living organisms?

Hyphae and the mycelium of pluricellular fungi, Q What are the hyphae and t...

Q What are the hyphae and the mycelium of pluricellular fungi? The major structures of pluricellular fungi are the hyphae threadlike filaments made of contiguous uni or multinu

Explain creaming volume formulae - performance evaluation, Performance Eval...

Performance Evaluation Cake batter aeration can be affected by the plasticity, consistency, emulsification, bake stock formulation and other fats and oil properties.  Creamin

Determine the term - neuropsychological approach, Determine the term - Neur...

Determine the term - Neuropsychological approach The neuropsychological approach relies on the use of tests in which poor performance may indicate either focal (localised) or d

Describe cultural characteristics of microorganisms, Q. Describe Cultural C...

Q. Describe Cultural Characteristics of Microorganisms? Bacterial growth in and on foods often is extensive enough to make the food unattractive in appearance or otherwise obj

Ventricular septal defect (vsd), Ventricular Septal Defect (VSD)   In v...

Ventricular Septal Defect (VSD)   In ventricular septal defect there is abnormal communication between right and left ventricle. Anatomically 90 per cent of all VSD are located

Define vapor-pressure lowering and osmotic pressure, Define Vapor-pressure ...

Define Vapor-pressure lowering and Osmotic pressure? 1. Vapor-pressure lowering: the decrease in the vapor pressure of a solution containing nonvolatile solutes, compared to th

Respiration, Cutaneous respiration in frogs and toads

Cutaneous respiration in frogs and toads

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd