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

Explain about pre-market approval application, Question 1: Show the pro...

Question 1: Show the procedures for filing a 510(k) application and a Pre-market approval application for medical devices in the USA. Show out the procedures for filing a

Classification of hypertension, Q. Show basic Classification of hypertensio...

Q. Show basic Classification of hypertension? Unlike many other diseases, hypertension develops insidiously (without symptoms). In 90% of hypertension cases, the cause is unkn

What do you understand by larval amplification, What do you understand by L...

What do you understand by Larval amplification? A form of asexual reproduction where, during life cycle, a single larval organism can produce large numbers of the next developm

Division phase or mitosis, DIVISION PHASE OR MITOSIS (M- PHASE) Cell di...

DIVISION PHASE OR MITOSIS (M- PHASE) Cell division was first  observed by  Naegeli 1842 in plant cells ,but  thoroughly described by Eduard strasburger  1875. Fleming 1879 desc

Define about calcium and osteoporosis, Define about Calcium and Osteoporosi...

Define about Calcium and Osteoporosis? Gain in bone mass occurs throughout childhood; however, during adolescent growth spurt, the gain in bone mass, as well as, calcium retent

Of which type of tissue are cartilages and bones made, Of which type of tis...

Of which type of tissue are cartilages and bones made? Are the cells of the connective tissue far or near to the others? The relative great spacing among cells is a typical

Transpiration, Most of the water taken up by a plant passes through it and ...

Most of the water taken up by a plant passes through it and is evaporated to the atmosphere.What use is made of the tiny fraction of this water which is retained by the plant?

Handling animals in lab, Handling : The desire for survival is same whethe...

Handling : The desire for survival is same whether in animals or human beings. You may be aware of the ability of even tiny animals to scratch and bite. So we won't say any more o

Hibernation and aestivation, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What are the gynoecium and the androecium, Q. What are the gynoecium and th...

Q. What are the gynoecium and the androecium? What are the other structures of flowers? Androecium is set of male reproductive structures of flowers it comprehends the stamens

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