What are three main problems with having only two kingdoms, Biology

Assignment Help:

What are three main problems with having only two kingdoms

There are three main problems with having only two kingdoms. The first problem concerns the unicellular flagellates such as Euglena and its relatives. These were put   with  protozoa in the animal kingdom. However, some euglenoids for example Euglena itself, contain Chlorophyll and feed autotrophically by photosynthesis. With only two kingdoms we have to content with the embrassing fact that these organisms car, in effect hop from one kingdom to the other.

'The  second problem concerns the fungi. Although fungal hyphae bear a superficial resemblance to the filaments of simple multicellular algae like Spirogyra, fungi are really very different from green plants. Not only do they lack chlorophyll and feed heterotrophically but in several structures differ from those of the plants.

The third problem is posed by bacteria. In electron microscope we can see that bacteria have simple prokaryotic cell structure, and same feature is also found in blue-green algae. They appear to be similar to each other, and markedly different from all other organisms which are eukaryotic. To solve this problem new five kingdom system was proposed.

 

 


Related Discussions:- What are three main problems with having only two kingdoms

Biosynthesis of cholesterol, Animals are able to synthesize cholesterol de ...

Animals are able to synthesize cholesterol de novo by an elegant series of reactions in that all 27 carbon atoms of cholesterol are derived from acetyl CoA. The  acetate  units  ar

Disability evaluations after injuries, Disability evaluations after injurie...

Disability evaluations after injuries: (a) Explain the following terms: "duration of disability" and "degree of disability". (b) Explain how degrees of disability after injur

Show classification of englearn dprantls system, Q. Show Classification of ...

Q. Show Classification of englearn dPrantls system? The outline and basis of classification of englearn d Prantl's system are given below: 1) Plant Kingdom has been divided,

Criteria of essentiality, Criteria of Essentiality Amon and Stout as e...

Criteria of Essentiality Amon and Stout as early as 1939, suggested certain criteria that an element must fulfil in order to be classified as essential. These criteria are lis

Features of amphibian gastrulation, Features of Amphibian Gastrulation ...

Features of Amphibian Gastrulation Major features of amphibian gastrulation are: Ectoderm surrounds the embryo by Epiboly. Gastrulation is initiated by a limited i

Explain human fetal circulation and the adult circulation, Concerning the m...

Concerning the mixture of arterial with venous blood what is the difference between the human fetal circulation and the adult circulation? In the human fetal circulation there

Types of insulin, There are different types of insulin available and prescr...

There are different types of insulin available and prescribed by the doctor according to the need of the patient. Insulin is grouped according to the speed of action in the body i.

Define reaction of fehling soxhlet method, Define Reaction of Fehling Soxhl...

Define Reaction of Fehling Soxhlet method? The reducing sugars formed are acted upon by the alkali of Fehling's solution to form enediols. These enediols are very unstable and

Fungi, Which type of reproductive structure has a better chance of survival...

Which type of reproductive structure has a better chance of survival if there was a sudden temperature change in its environment?

Explain nephrotoxicity, Explain Nephrotoxicity Nephrotoxicity is the ma...

Explain Nephrotoxicity Nephrotoxicity is the major dose-limiting toxicity of amphotericin B deoxycholate; sodium loading with  normal saline may prevent or ameliorate it and is

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