MCQ: Biological classification

11. Which kingdom do bacteria belong to?
a) Plantae
b) Fungi
c) Monera
d) Animalia

12. In which place you do not find bacteria?
a) In hot springs
b) in forest area
c) deep oceans
d) None of the above

13. Bacteria can live inside or on other organisms. What is this lifestyle called?
a) Symbiotic
b) Parasitic
c) Saprophytic
d) Parasitic or Symbiotic

14. How are bacteria grouped based on their shape?
a) Circles, squares, triangles, and rectangles
b) Cubes, spheres, and cones
c) Cocci, bacilli, vibrio, and spirilla
d) Smooth, rough, slimy, and sticky

15. What type of bacteria can synthesize their food from inorganic substrates?
a) Autotrophs
b) Heterotrophs
c) Parasites
d) Saprophytes

16. Methanogens are a type of bacteria found in the gut of ruminant animals. they belongs to?
a) Eubacteria
b) Archaebacteria
c) Cyanobacteria
d) Mycoplasma

17. Which group of bacteria is often referred to as “true bacteria”?
a) Cyanobacteria
b) Archaebacteria
c) Eubacteria
d) Mycoplasma

18. What is the main characteristic of cyanobacteria?
a) They lack cell walls.
b) They are photosynthetic autotrophs.
c) They are always unicellular.
d) They are parasites.

19. Some cyanobacteria can fix atmospheric nitrogen in specialized cells called __________.
a) Chloroplasts
b) Mitochondria
c) Heterocysts
d) Plasmids

20. What do chemosynthetic autotrophic bacteria oxidize?
a) Organic substances
b) Carbohydrates
c) Inorganic substances
d) Fats