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

Describe about the term - neuropsychological assessment, Describe about the...

Describe about the term - Neuropsychological assessment Neuropsychological assessment has its roots in neurology, the branch of medicine that focuses on the nervous system and

Explain erythema migrans, Erythema migrans Oral antibiotic therapy sho...

Erythema migrans Oral antibiotic therapy shortens the duration of the rash and generally prevents development of late sequelae. Among the 3 drugs used for this indication, onl

Conditions requiring rapid treatment of hypertension, List of Conditions Re...

List of Conditions Requiring Rapid Treatment of Hypertension 1) Cardiac: • Acute aortic dissection • Acute left ventricular failure • Acute or evolving myocardial i

Reaction wood - root and shoot morphogenesis, Reaction Wood - Root and Shoo...

Reaction Wood - Root and Shoot Morphogenesis As a plagiotropic branch elongates, it might be expected to bend, downwards because of its increased weight and distance from the

Is expression of cloned gene always a success, Question 1 Is expression of...

Question 1 Is expression of cloned gene always a success? How does the method of molecular photo copying work? Question 2 Explain the control of gene expression with the exam

Explain broad spectrum antibiotics?, Board spectrum antibiotics are effecti...

Board spectrum antibiotics are effective against several diff. types of harmful bacteria ex: tetracycline

Valve separate the right ventricle from the pulmonary artery, Q. What is th...

Q. What is the valve that separates the right ventricle from the pulmonary artery? Why is that valve important? The pulmonary valve is important to prevent blood from the pulmo

Antimicrobial prophylaxis - controversial, Antimicrobial Prophylaxis - Cont...

Antimicrobial Prophylaxis - Controversial The need for prophylaxis in breast surgery, herniorraphy and other "clean" surgical procedures has been controversial. Medical Letter

Composed of proteins and dna, Chromosomes, colored bodies, are composed of ...

Chromosomes, colored bodies, are composed of proteins and DNA; so are chromatids. At metaphase I there are 46 chromosomesaligned in pairs along the human cells equatorial plate. At

Describe lifetime risk estimation, Describe Lifetime Risk Estimation ? ...

Describe Lifetime Risk Estimation ? Traditional statistical and epidemiological methods of estimating long-term risks do not accurately reflect population burden of disease. Th

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