Asymmetrical and spherical - metazoa, Biology

Assignment Help:

Asymmetrical and Spherical - Metazoa

Some creatures are asymmetrical: no matter which way we try to divide them through the middle, no two halves would appear alike. In simpler words: these are animals which cannot be cut into two identical halves through any plane or axis (longitudinal, sagittal or transverse), Amoeba and most of the poriferans are examples.

At the other extreme, is spherical symmetry. The animals with spherical symmetry can be divided into identical halves along a number of planes which pass through the centre or in other words every plane through the centre will yield two halves which arc mirror images of each other. This type of symmetry is found chiefly in some protozoa and is rare in other groups of animals. Actinophrys and colonial Volvox are typical examples.


Related Discussions:- Asymmetrical and spherical - metazoa

How d-glucose differs from d-galactose, D-glucose differs from D-galactose ...

D-glucose differs from D-galactose only in the arrangement around carbon 4. Therefore D-glucose and D-galactose are- Select one: a. enantiomers b. epimers c. mirror ima

Measurement of the active ingredient in aspirin pills, Medication delivered...

Medication delivered in the form of a pill contains an active ingredient or ingredients. Beside the drug itself, the pill also contains "fillers". The filler has several functions.

What are the fat requirements of athletes, What are the Fat Requirements of...

What are the Fat Requirements of athletes? Fats are the body's other major energy source. It  is  a  well  known  fact  that fat  is  a highly concentrated source of energy

Acute aortic regurgitation-types of regurgitation, Acute Aortic Regurgitati...

Acute Aortic Regurgitation :  The most dramatic presentation occurs in dissection of the aortic root. Endocarditis of the native or prosthetic aortic valve may also lead to a

Explain vitamins requirement during thyphoid, Explain Vitamins requirement ...

Explain Vitamins requirement during thyphoid Vitamins : Vitamins which need to be emphasized include B complex, considering the increase  in  the energy requirement and a decr

Pre-requisites of counselling, In diabetes mellitus counsellor help the dia...

In diabetes mellitus counsellor help the diabetic patient to cope up with the stress and take own decision for their treatment and life style changes. Decision making  capacity of

Explain about the proteins, Explain about the Proteins? Proteins, as yo...

Explain about the Proteins? Proteins, as you may already know, are made up of carbon, hydrogen, nitrogen, oxygen and usually sulphur. Proteins are built up of a large number of

Define the appropriate controls and the possible results, After the virus c...

After the virus capsid containing vimentin gets into the nucleus it is broken down and the DNA is released. Whether capsid proteins are broken down into amino acids or remain intac

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