Amoeba, Biology

AMOEBA

Systematic  Position

Amoeba  was discovered by  Russel von Rosenhoff in  1755. He  called it the little proteus  after the mythical  sea god who is believed to be capable  of changing shape.

Several species  of Amoeba  are known ,Amoeba proteus (Gr, amoib= change )  is commonest  and best known .Other  common species  are .Aradiosa ,A discoides    and A verrucosa. The  following  description is largely based  on A proteus.

Habit and Habitat

Amoebae  inhabit  fresh or  marine  water  and moist soil. A proteus is  abundant  in bottom mud or surface  scum of ditches  , ponds, lakes  streams , etc, having  plenty of decaying organic matter ,Normally  ,it  creeps  upon solid  objects feeds upon algae, bacteria, etc, responds  to stimuli  and multiplies by mitosis.

Culture of  Amoeba

Temporary cultures  of amoeba  can be easily prepared for laboratory study by  hay infusion  method , Dry  and  clean  leaves  grass wheat  grains  or banana  peals are boiled  in distilled water  for about 15 minutes. The water is then filtered and allowed  to stand   open for 2to 3 days .This  allows abundant bacterial growth in it ,Now  some half rotten  leaves are  brought  from  a pond or ditch, washed  ant put into the filtrate. Within a week  the filtrate  abounds with  amoebae. A drop  from the  bottom  of the container on to  a  slide  shows   several amoebae  when  observed under  the microscope.  

Posted Date: 10/4/2012 3:01:26 AM | Location : United States







Related Discussions:- Amoeba, Assignment Help, Ask Question on Amoeba, Get Answer, Expert's Help, Amoeba Discussions

Write discussion on Amoeba
Your posts are moderated
Related Questions
Determine the Adequacy of children's food? Adequacy of children's food and nutrient intake depends on: Sibling company Peer pressure Model set by parents and

Determine sequence weights for the sequences ACTA, ACTT, CGTT, and AGAT in problem 1 by using Thompson, Higgins, and Gibson method


Define the Flavonoids? Flavonoids constitute the largest group of plan1 polyphenols, generally arc the compounds of low molecular weight, bound to sugar molecules. You may be f


Explain the Indications for neuropsychological screening Nature of referral question warrants it. Situational explanation for changes in emotions or cognitive functioni

Photoreceptors Photoreceptors are concerned in absorption of light by photosensitive pigments. The chemical change involved produces the impulse concerned in the nerve cells.

Explain the Transportation of Vitamin A? The chylomicra and retinal-binding protein play an important role in the transport of retiuol. This chylomicra complex enters the lymp

According to the theory of natural selection, what factor below contributed to the current variations in beak sizes of finch species on the Galapagos Islands? a. Finches dispersed

What are the main divisions and representing species of the gymnosperms? This group of plants can be divided into conifers (pine, sequoia, cypress), that have flowers known as