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Micro Organisms. Science - Micro Organisms.

Tamil Nadu Board - STD 8 - Science (Tamil - English Medium). 71 questions in this chapter.

Question types

Micro Organisms. question types

71 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

71
Questions
8
Question groups
5
Question types
Sample Questions

Micro Organisms. questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 4M C Q1 Mark
E.coli is an example of ……………. bacteria.
  • ✓
    Peritrichous
  • B
    Atrichous
  • C
    Lophotrichous
  • D
    Monotrichous

Answer: A.

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Q 16Assertion & Reason1 Mark
Assertion (A) : Boiling milk is a method of preservation.
Reason (R) : Probiotics is a method of preserving milk.
  • A
    Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • B
    Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
  • ✓
    Assertion is true but Reason is false.
  • D
    Both Assertion and Reason are false.

Answer: C.

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Q 17Assertion & Reason1 Mark
Assertion (A) : Fungi are heterotrophic in nutrition.
Reason (R) : They lack chlorophyll.
  • ✓
    Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • B
    Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
  • C
    Assertion is true but Reason is false.
  • D
    Both Assertion and Reason are false.

Answer: A.

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Q 18Assertion & Reason1 Mark
Mark the correct one as:
Assertion: Algae are heterotrophic.
Reason: They do not have chlorophyll.
  • A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • B
    If both assertion and reason are true and reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • ✓
    If both assertion and reason are false.

Answer: D.

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Q 19Assertion & Reason1 Mark
Mark the correct one as:
Assertion: Malaria is caused by Protozoa.
Reason: The disease is transmitted by mosquito.
  • ✓
    If both assertion and reason are true and the reason is the correct explanation of assertion.
  • B
    If both assertion and reason are true and reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If both assertion and reason are false.

Answer: A.

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