Question

Which of these is not an activity of bacteria?

• A. The digestion of cellulose in herbivores
• B. The production of antibiotics
• C. The decomposition of waste matter
• D. Assimilation of food

Answer 1

The correct option is D Assimilation of food

There are bacteria present in the body of cattles, ruminants and herbivores. These bacteria produce the enzyme cellulase which helps in the degradation of the cellulose and hemicellulose. The organisms help in the digestion of cellulose obtained from the raw plants which are consumed by these animals. Many species of bacteria are used for the production of antibiotics. Streptomyces is the genus of bacteria which is known to be the highest producer of antibiotics which act as antifungal, antibacterial and antiparasitic. The bacteria which perform anaerobic fermentation are commonly used for the decomposition of the organic matter and convert them into biogas.

Assimilation is the process in which the nutrients are absorbed by the cells after the process of digestion. This activity is not performed by the bacteria but is performed by the body cells of the animal.

Thus, the correct answer is option D.