Question

Match the following

i) Rhizopus	a) Malaria
ii) Lactobacillus	b) Idli, Dosa
iii) Yeast	c) Curd formation
iv) Protozoa	d) Bread mould

• A. I- c, II- d, III- a, IV- b
• B. I- b, II- d, III- c, IV- a
• C. I- a, II- b, III- c, IV- d
• D. I- d, II- c, III- b, IV- a

Answer 1

The correct option is D I- d, II- c, III- b, IV- a

There are spores of Rhizopus are present in the atmosphere. The spores germinate when they obtain a favourable climate and substratum. In the presence of moisture an nutrients on the surface of bread, the spores germinate and form the hyphae. Thus, these fungi are commonly called as bread mould.

Lactobacillus is the bacterium present in raw milk which performs fermentation. The bacterium converts the lactose sugar in the milk to lactic acid by the process of fermentation. Thus, the activity of the bacterium is responsible for curd formation.

Yeast cells are added to the batter of idli and dosa. The cells perform anaerobic fermentation by utilizing the fermentable sugars and converting them to ethanol and carbon dioxide. The carbon dioxide gas makes the products soft, porous and fluffy.

Protozoa known as Plasmodium is the organism which is responsible for causing malaria in the humans. The organism grows in mosquitoes and are transmitted to humans while feeding on human blood.

Thus, the correct answer is option D.