Class VIII

What does our body produces to fight the invader when a diseasecarrying microbe enters our body?
  1. Antigens
  2. Antibodies
  3. Pathogens
  4. Antibiotics
Which of the following is not a communicable disease?
  1. Cholera
  2. Chicken pox
  3. Tuberculosis
  4. Malaria
Which of the following bacteria is involved in the fixation of nitrogen in leguminous plants?
  1. Rod-shaped bacteria
  2. Spiral bacteria
  3. Rhizobium
  4. Spherical bacteria
Which of the following microorganism promotes the formation of curd?
  1. Lactobacillus
  2. Amoeba
  3. Spiral bacteria
  4. Spirogyra
The microorganisms that cause diseases in human beings, plants and animals are called ____
  1. Carriers
  2. Spirogyra
  3. Pathogens
  4. Antibodies
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