Sonneborn in 1938 discovered certain strains in Paramecium which showed a killer trait due to the presence of a cytoplasmic factor called kappa. The killer strain can destroy the sensitive strains growing in culture which do not have kappa by liberating a toxic substance paramecin. Killer strains are not killed by their own paramecin. Paramecium has two kinds of nuclei, [...]
In this article we will discuss about the structure of paramecium. This will also help you to draw the structure and diagram of paramecium. 1. Fresh water, free living, omnipresent and is found in stagnant water. 2. Body like a slipper with anterior end narrow and rounded and posterior e-c broad and pointed. Uniform ciliation all over body except at [...]
In this article we will discus about the asexual and sexual modes of reproduction in paramecium with the help of suitable diagrams. Paramecium in Binnary Fission (Asexual Reproduction): 1. It is a slide of Paramecium showing asexual mode of reproduction. 2. It occurs during favourable conditions when food is available in large quantities and temperature is favourable. 3. A [...]