8th Standard Science Chapter-4 November 30, 2020December 26, 2020wefru 8th Standard Science quiz Chapter-4 1 Created on November 30, 2020 By wefru 8th Standard Science Chapter 4 CHECK YOUR SKILLS BROADLY 1 / 10 11. ______ is used for the production of alcohol and wine. Yeast Mosquito AntAlgae Ant 2 / 10 12. Which of the following diseases can be cured using antibiotics? AIDS Dengue Typhoid Malaria 3 / 10 13. Which organisms are microscopic and dependent on host organisms for reproduction? Algae Protozoa Viruses Bacteria 4 / 10 14. _______ are the agents that act as carriers of a pathogen and spread diseases. Vectors Microbes Parasites DNA 5 / 10 15. An infectious disease is ___________ . caused only by bacteria spread from animal to animal caused only by viruses spread from person to person 6 / 10 16. Which one of the following is not a method of food preservation? Salting Drying Boiling Pickling 7 / 10 17. Which among the following statements is not associated with food preservation? Prevention of decay or spoilage Decreased shelf life Air-tight sealing Storage for future use 8 / 10 18. Which one of the following is not produced by the process of fermentation? Cheese Milk Yoghurt Wine 9 / 10 19. A plant disease called citrus canker is caused by a _________ . Bacteria Fungi Protozoa Virus 10 / 10 20. Which among the following pathogens causes cholera? Bacteria Protozoan Fungus Virus Your score isThe average score is 30% LinkedIn Facebook Twitter VKontakte 0% Restart quiz