In this article we will discuss about the morphology of amoeba. Shape and Size: Amoeba is a unicellular microscopic animal about 0.25 to 0.6 mm in diameter. Under microscope, it appears to be transparent, irregular and colorless mass of protoplasm which constantly changes in shape by giving out finger-like processes called pseudopodia. The animal is without any firm cell-wall but [...]
The following article will guide you about how do amoeba reproduce asexually during favourable and unfavourable environmental conditions. Binary Fission: This is the commonest and simplest method of reproduction in amoeba. In this, the whole body divides, like an ordinary cell, into two daughter amoebae by mitosis. Hence, it is termed binary fission. In favourable conditions, when food is plentiful, [...]
Numbers of theories have been put forth to explain the movements of the Amoeba. The theories are: 1.Adhesion Theory 2. Contraction Theory 3. Rolling Movement Theory 4. Walking Movement Theory 5. Surface-Tension Theory 6. Sol-Gel Theory 7. Formation Zone Theory 8. Molecular Folding Unfolding Theory. 1. Adhesion Theory: This theory explains that locomotion in Amoeba is performed by [...]