Symmetry - metazoa, Biology

Assignment Help:

Symmetry - Metazoa

All living organisms have some body shape and form. The general body plan of animals may be organized in one of several ways . Arrangement of parts or organs on either side of an imaginary dividing line or around a common axis or radially around a point so that opposite parts are mirror images of one another is called symmetry. There are two broad divisions of symmetry,

(i) Primary, or embryonic

(ii) Secondary, or adult.

2039_Symmetry - Metazoa.png

Figure:  Different types of body symmetries

The latter may or may not be the same as the primary one. For example, the larva of starfish is bilaterally symmetry but the adult starfish is radially symmetrical. The primary symmetry is bilateral and secondary symmetry is radial. With regard to symmetry animals can be basically of five types

  • Asymmetrical
  • Spherical
  • Bilateral
  • Radial and
  • Biradial

 

 


Related Discussions:- Symmetry - metazoa

Fats requirements during congestive cardiac failure, Q. Fats requirements d...

Q. Fats requirements during congestive cardiac failure? Fat: The quantity and quality of fat would be governed by the severity of hyper- lipidemia and adiposity. Emphasis, as

Determine the diet chart for adolescents, Determine the Diet chart for Adol...

Determine the Diet chart for Adolescents? For adolescents, other than points covered above, there are two more important points of considerations. Inanition Fad diets

To test the gas given off when seeds germinate, To test the gas given off w...

To test the gas given off when seeds germinate Place some mustard seeds in a flask with some damp cotton wool, in the apparatus shown in the diagram, and permit them to germina

What is the bio-medical waste, What is the Bio-medical waste The Bio-m...

What is the Bio-medical waste The Bio-medical waste (Management & Handling Rules), 1998 is applicable to all persons, who generate, collect, receive, store, transport, treat,

Agro industrial-chopping and grinding, Chopping/grinding These are the ...

Chopping/grinding These are the processes by which the particle size of cereals, oil cakes and roughages including green fodders and crop residues is reduced employing various

Sun, wath is sun

wath is sun

Animal physiology, what are the animals with respiratory organs?

what are the animals with respiratory organs?

Stereoisomers , Glyceraldehyde has a one asymmetric carbon atom the central...

Glyceraldehyde has a one asymmetric carbon atom the central one and so two stereoisomers  which is also known as optical isomers are possible, which is two forms of glyceraldehyde,

Widal test is used for the diagnosis, Widal test is used for the diagnosis ...

Widal test is used for the diagnosis of: 1. Malaria 2. Pneumonia 3. Tuberculosis 4. Typhoid Typhoid

Megaloblastic anaemia, Megaloblastic Anaemia   Megaloblastic anaemia re...

Megaloblastic Anaemia   Megaloblastic anaemia refers to the abnormal development  of red cells i.e. megaloblasts in the bone marrow.  Etiology   It is due to lack of f

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