Amoeba, Biology

Place a slide of Amoeba (common species is A. proteus) under tlie lnicroscope and focus it under low power (5x x 5x), and observe it carefully. Amoeba looks like an irregular colourless drop of gelatinous protoplasm.

i) Tlie body is covered by a thin elastic, semi-permeable membrane called 91 plasmalemma

ii) Under tlie plasmalemma, tlie protoplasm is clearly distinguished into an outer clear ectoplasm and an inner granular fluid-like endoplasm.

iii) Try to identify the anterior and the posterior ends of Amoeba. Tlie anterior elid is cliaracterised by a thick layer of ectoplasm (tlie hyaline cap), while the posterior end is modified in tlie form of a tail like region the uroid (The anterior end of amoeba is the one in which direction a pseudopodium is given out for progression).

iv) You will see some blunt, finger-like projections. These are tlie pseudopodia and are tlie extensions of the protoplasm. Pseudopodia help tlie Amoeba to move in tlie medium and also in capturing food.

Posted Date: 4/4/2013 1:14:53 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
brief account on classification and general characters of protozoa

Acute Renal Failure You know that acute renal failure refers to the sudden deterioration in kidney function, characterised by reduced urine excretion to less than 10 ml/kg  bo

Q. Show the process of Construction of Keys? Keys are constructed using contrasting characters. The possible names in the key are divided into smaller and smaller groups. Each

Difference between Artificial selection and natural selection - S.No Artificial selection Natural selection 1. It

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

Why have biologists and bioinformaticians embraced the Web as a vehicle for disseminating data so quickly, whereas clinicians and clinical informaticians have been more hesitant to

From which floral structure do fruits come? Fruits are customized ovaries of the flowers.

What is peristomium. Describe? The segment behind the prostomium in annelids which contains the oral opening. This segment like the prostomium isn't a true segment and has no s

Atrial Arrhythmias :  Atlial fibrillation is the most common rhythm abnormality after CABG. Paroxysmal atrial tachycardia and atrial flutter are less common. Increased sympat

In the time of Darwin the results of Mendel's research on biological inheritance had not been published, Genetics was not yet developed, neither DNA nor the concept of genetic muta