Draw a neat, generalized diagram of a bacterium and label its six important parts. Answer the following questions.
(i) Name the kingdom to which it belongs.
(ii) Write two characteristic features of the kingdom.
(iii) Name the gelatinous, proteinaceous covering which surrounds the cell wall.
(iv) Mention two cellular organelles which are absent in bacterium.
(v) Write the scientific name of a comma-shaped bacterium.
The generalized diagram of a bacterium is given below:
(i) Bacterium belongs to Kingdom Monera.
(ii) Two characteristic features of Kingdom Monera are:
- Kingdom Monera includes microscopic, unicellular or single celled organisms.
- They have a cell wall, but no nucleus. Hence, they are called Prokaryotic.
(iii) The cell wall is surrounded by a gelatinous or proteinaceous covering called 'capsule'.
(iv) Nucleolus and Mitochondria are two cellular organelles which are absent in bacterium.
(v) The scientific name of a comma-shaped bacterium is Vibrio.
Example- Vibrio cholerae.