Tick the Correct Answer.
- (a) Yeast is used in the production of
- (i) sugar (ii) alcohol (iii) hydrochloric acid (iv) Oxygen
- (b) The following is an antibiotic
- (i) Sodium bicarbonate (ii) Streptomycin (iii) Alcohol (iv) Yeast
- (c) Carrier of malaria-causing protozoan is
- (i) female Anopheles mosquito (ii) cockroach (iii) housefly (iv) butterfly
- (d) The most common carrier of communicable diseases is
- (i) ant (ii) housefly (iii) dragonfly (iv) spider
- (e) The bread or idli dough rises because of
- (i) heat (ii) grinding (iii) growth of yeast cells (iv) kneading
- (f) The process of conversion of sugar into alcohol is called
- (i) nitrogen fixation (ii) molding (iii) fermentation (iv) infection
Answer:
- a) Yeast is used in the production of alcohol.
- b) The following is an antibiotic-Streptomycin.
- c) The carrier of malaria-causing protozoan is the female Anopheles mosquito.
- d) The most common carrier of communicable diseases is housefly.
- e) The bread or idli dough rises because of groth of yeast cells.
- f) The process of conversion of sugar into alcohol is called fermentation.
NCERT Solution for Class 8 Science Chapter 2: Microorganisms: Friends and Foe
NCERT Solutions for class 8 Science Chapter 2 Microorganisms: Friends and Foe: The chapter on Microorganisms: Friends and Foe is important for students approaching the board exams. This article introduces NCERT solutions designed to help students explain the concepts of further learning and how to write to get good grades on exams. The solutions are presented in very simple language for ease of understanding.
Solution of NCERT CBSE Science of Class 8 Chapter 2 Microorganisms: Friends and Foe: This chapter explains how microorganisms can be our friend and foe. It also explains the nature of microbes. It further describes the usefulness and harmful effects of microorganisms in detail. Revise the basic concepts of Microorganisms: Friends and Foe for quick revision and class notes.