Identify the bacteria that promotes the formation of curd.
A) Vibrio cholerae
B) Lactobacillus
C) Mycobacterium leprae
D) Clostridium tetani

Hint:Bacteria which provide a nutrient source and create an ecosystem for harmful pathogens. Acidophilus bacteria break down lactose, a sugar found in milk, into lactic acid.

Complete answer:
Bacteria are small, single-celled organisms that occur in their millions in any environment, both inside and outside of other species. Some of the bacteria are toxic but useful. It supports many ways of life, in both vegetables and animals. It is used in industrial and medicinal processes. There are a great many different forms of bacteria.

Based on the shape, bacteria are classified into three types namely Spherical, Rod-shaped, Spiral Vibrio cholera (comma-shaped) and a Gram-negative bacterium. The bacterium's natural environment is brackish or saltwater in which it quickly enters the shells of crabs, shrimps and other shellfish containing chitin. Some strains of V. cholerae cause the disease cholera that can be obtained from the intake of undercooked or raw marine products.

Mycobacterium leprae is a bacterium, which causes leprosy. Leprosy is a chronic infectious disease affecting the peripheral nerves and attacking the skin, eyes, nose and muscles. Leprosy can occur at all ages from childhood to the elderly, but where therapies can prevent disability it is curable.

Clostridium tetani are normal soil, bacterium, and is the tetanus causative agent. C. Tetani is rod-shaped when grown in the forest, and grows up to 2.5 microns long. Yet when they form spores. The tetani get greatly enlarged at one end, which resembles a tennis racket or drumstick.

Lactobacillus is a genus of Gram-positive, aerotolerant, or microaerophilic, rod-shaped, non-spore-forming bacteria. They form a significant part of the lactic acid bacteria community. That encourages the formation of curds.

Hence the correct answer is option ‘B’ Lactobacillus.

Note:Lactobacillus is the most popular probiotic found in foods like yoghurt and its purpose is diverse in maintaining human well-being