Class 11 Biology · Chapter 2 · Test 2
Bacteria and Viruses 2
35 MCQs This set covers bacterial flagella and other motility, the major groups of bacteria, and their ecological and economic importance. It also covers normal flora, and the structure of viruses including the T4 bacteriophage and HIV.
35 questions · 25 min · 35 marks
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Sample questions
The first 5 of 35. Try each one, then tap to see the answer.
Question 1
When a bacterial population moves together by flagella the movement is called
- ATwitching
- BGliding
- CSwarming
- DSliding
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Answer: C
Swarming is the collective movement of a population using flagella.
Question 2
Bacteria such as Streptococcus that lack flagella and pili move by
- ABrownian movement
- BTwitching
- CSwarming
- DAxial filament
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Answer: A
They move due to random movements of particles present in the fluid.
Question 3
Spirochaetes move using a modified flagellum called
- APilus
- BAxial filament
- CCapsule
- DFimbria
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Answer: B
The axial filament runs lengthwise in the periplasmic space and allows flexing and creeping and spinning.
Question 4
Bacteria without flagella are called
- AMonotrichous
- BAtrichous
- CPeritrichous
- DAmphitrichous
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Answer: B
Atrichous bacteria do not possess flagella.
Question 5
Bacteria with a tuft of flagella at one pole are called
- ALophotrichous
- BMonotrichous
- CAmphitrichous
- DAtrichous
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Answer: A
Monotrichous bacteria have a single polar flagellum.
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