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Answer- The above question is from the chapter 'Micro-organisms: Friend and Foe'.
Q1. Define the term 'pathogen'.
Ans. Disease causing microbe like: bacterium, protozoan, etc. is called pathogen.
Q2. Name two plant diseases caused by fungi.
Ans. Two plant diseases caused by fungi are: rust of wheat and downy mildews.
Q3. Which bacterium causes curdling of milk?
Ans. Curdling of milk occurs due to a bacterium called Lactobacillus.
Q4. Name two viral diseases that spread by air.
Ans. Two airborne viral diseases are cold and measles.
Q5. What is the cause of jaundice?
Ans. Jaundice is a water-borne disease caused by a virus or a bacteria that is present in water or food, making it contaminated.
Q6. What is botulism?
Ans. Botulism is a type of uncommon food poisoning caused due to a bacterium called Clostridium botulinum. The bacterium spoils the tinned food due to lack of oxygen, producing various toxins.