micro-organisms-and-cell-l2 MCQ — 10 Practice Questions with Answers

micro-organisms-and-cell-l2 is a mathematics-science topic in the RAS/RPSC syllabus. This page gathers exam-style micro-organisms-and-cell-l2 multiple-choice questions with correct answers and explanations, so aspirants can test recall and revise frequently examined concepts.

Practice 10 micro-organisms-and-cell-l2 multiple-choice questions with detailed answers and explanations. Ideal for RAS/RPSC exam preparation.

10 Questions mathematics-science

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Q1. Assertion: Yeast helps dough become soft and fluffy. Reason: Yeast releases carbon dioxide during respiration in warm dough. Choose the correct option.

A Both assertion and reason are true, but the reason does not explain the assertion.

B Assertion is true, but reason is false.

C Both assertion and reason are true, and the reason explains the assertion. Correct

D Assertion is false, but reason is true.

Explanation

Devika can solve this by matching organism, process and result: yeast is a fungus, it respires in warm dough, carbon dioxide bubbles form, and the dough becomes fluffy. The reason is not decorative; it gives the mechanism behind the assertion.

Q2. Which set of statements is fully correct about cells and viruses?

A Plant cells lack cell wall; animal cells have chloroplasts; viruses are multicellular.

B Bacteria have a well-defined nucleus; viruses make food by photosynthesis.

C Animal cells have cell wall; fungi have chloroplasts; bacteria are always multicellular.

D Plant cells have cell wall; bacteria lack a well-defined nucleus; viruses are acellular. Correct

Explanation

Karan should compare the noun in each clause with the structure attached to it. Plant cell plus wall is safe, bacteria plus nucleoid or no well-defined nucleus is safe, and virus plus acellular is safe. The other groups mix correct vocabulary with wrong pairings.

Q3. Asha is checking the current NCERT anchor for this topic. Which title should she cite for Grade 8 Curiosity?

A Curiosity Correct

B Science, without any current title

C Maths Mela

D Our Wondrous World

Explanation

Asha should cite Curiosity because NCERT's own textbook page and prelims PDF identify the Grade 8 Curiosity textbook by that title for the current cycle. The other options are either stale, wrong subject, or wrong school stage, so they would weaken a REET source note.

Q4. Which pair is correctly matched for plant and animal cells?

A Plant cell — cell wall and chloroplast; Animal cell — no cell wall Correct

B Plant cell — no boundary; Animal cell — chloroplast for photosynthesis

C Plant cell — nucleoid only; Animal cell — cell wall and chlorophyll

D Plant cell — acellular; Animal cell — multiplies only inside host cell

Explanation

Karan should use the diagram rule: plant cells have a wall and chloroplasts, while animal cells do not have a cell wall. The wrong options are built by shifting bacterial or viral features into plant and animal cells.

Q5. Imran observes pond water under a microscope. Which statement best defines microorganisms at Class 8 level?

A All microorganisms are visible if we look carefully in sunlight.

B They are tiny living forms generally not visible to unaided eyes. Correct

C They are always multicellular animals.

D They are only disease-causing viruses.

Explanation

Imran's observation needs a microscope because microorganisms are too small for unaided eyes. Option B is broad enough to include bacteria, protozoa, fungi and algae. It also avoids the common trap of treating all microbes as viruses or all microbes as harmful.

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Frequently Asked Questions

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There are 10 micro-organisms-and-cell-l2 practice MCQs available on Aspirant Academy, with detailed answers and explanations for each question.

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micro-organisms-and-cell-l2 falls under the mathematics-science section of the RAS/RPSC syllabus. It is a frequently tested area and regular practice with these MCQs will strengthen your preparation.

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micro-organisms-and-cell-l2 MCQ — 10 Practice Questions with Answers

You've seen 5 of 10 sample questions

Frequently Asked Questions

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micro-organisms-and-cell-l2 MCQ — 10 Practice Questions with Answers

Practice Questions

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More questions (pack required)

Frequently Asked Questions

More Topics in mathematics-science

algebraic-expressions-and-identities-l2

area-perimeter-volume-surface-area-l2

electricity-magnetism-l2

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graphs-and-coordinate-geometry-l2

human-body-and-health-l2

laws-of-indices-and-square-cube-roots-l2

light-sound-heat-l2

linear-equations-one-two-variables-l2

living-world-plants-animals-l2

matter-states-and-changes-l2

natural-resources-and-environment-l2

number-system-integers-rationals-l2

pedagogy-of-mathematics-l2

pedagogy-of-science-l2

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