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Class 11 Biology Cell: The Unit of Life 1 Mark Questions

1 Mark Questions for Class 11 Biology Cell: The Unit of Life. Try first, then reveal the answer. These are exam-oriented practice items, not copied board papers.

Practice questions aligned to NCERT topics used in CBSE classrooms. These are original exam-oriented questions for revision — not official CBSE board papers and not a guarantee of any exam question. Always match the textbook issued by your school and the latest PDFs on ncert.nic.in and cbseacademic.nic.in.

Answers opened: 0

Practice set

Q1MCQ1 markEasyRevision pick

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. CBSE often tests a concept by asking a daily-life example from the same chapter
  • B. Plasma membrane fluid mosaic
  • C. Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology
  • D. Chloroplast
Answer

B. Plasma membrane fluid mosaic

Explanation

Plasma membrane fluid mosaic. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q2MCQ1 markEasy

Choose the correct statement related to Mitochondria in the chapter Cell: The Unit of Life.

  • A. Ribosomes 70S and 80S
  • B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
  • C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
  • D. Mitochondria: powerhouse
Answer

D. Mitochondria: powerhouse

Explanation

Mitochondria: powerhouse. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q3MCQ1 markEasy

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. Chloroplast
  • B. Write three points from Cell: The Unit of Life in your own words; that is enough for a short-answer start
  • C. Every chapter ends with keywords or a summary that is useful for one-mark answers
  • D. Nucleus and chromosomes
Answer

A. Chloroplast

Explanation

Chloroplast. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q4MCQ1 markEasy

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. Use the terms used in the NCERT book; do not replace them with unofficial names
  • B. Ribosomes 70S and 80S
  • C. Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology
  • D. CBSE often tests a concept by asking a daily-life example from the same chapter
Answer

B. Ribosomes 70S and 80S

Explanation

Ribosomes 70S and 80S. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q5MCQ1 markModerateRevision pick

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. Mix MCQs with short answers so you remember both facts and explanations from Cell: The Unit of Life
  • B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
  • C. Nucleus and chromosomes
  • D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer

C. Nucleus and chromosomes

Explanation

Nucleus and chromosomes. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q6MCQ1 markEasy

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. Write three points from Cell: The Unit of Life in your own words; that is enough for a short-answer start
  • B. Every chapter ends with keywords or a summary that is useful for one-mark answers
  • C. Ribosomes 70S and 80S
  • D. Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology
Answer

D. Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology

Explanation

Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q7MCQ1 markEasy

Choose the correct statement related to Textbook first in the chapter Cell: The Unit of Life.

  • A. The textbook says the opposite of this statement
  • B. CBSE often tests a concept by asking a daily-life example from the same chapter
  • C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
  • D. Use the terms used in the NCERT book; do not replace them with unofficial names
Answer

C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions

Explanation

Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q8MCQ1 markEasy

Choose the correct statement related to Keywords in the chapter Cell: The Unit of Life.

  • A. This happens only in a laboratory and never in daily life
  • B. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
  • C. Mix MCQs with short answers so you remember both facts and explanations from Cell: The Unit of Life
  • D. Every chapter ends with keywords or a summary that is useful for one-mark answers
Answer

D. Every chapter ends with keywords or a summary that is useful for one-mark answers

Explanation

Every chapter ends with keywords or a summary that is useful for one-mark answers. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q9MCQ1 markEasyRevision pick

Choose the correct statement related to Examples in the chapter Cell: The Unit of Life.

  • A. This idea is not part of the NCERT chapter
  • B. Plasma membrane fluid mosaic
  • C. Write three points from Cell: The Unit of Life in your own words; that is enough for a short-answer start
  • D. CBSE often tests a concept by asking a daily-life example from the same chapter
Answer

D. CBSE often tests a concept by asking a daily-life example from the same chapter

Explanation

CBSE often tests a concept by asking a daily-life example from the same chapter. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q10MCQ1 markModerate

Choose the correct statement related to Diagrams in the chapter Cell: The Unit of Life.

  • A. Use the terms used in the NCERT book; do not replace them with unofficial names
  • B. The textbook says the opposite of this statement
  • C. Mitochondria: powerhouse
  • D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer

D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures

Explanation

If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q11MCQ1 markEasy

Choose the correct statement related to Revision in the chapter Cell: The Unit of Life.

  • A. Chloroplast
  • B. Write three points from Cell: The Unit of Life in your own words; that is enough for a short-answer start
  • C. Mix MCQs with short answers so you remember both facts and explanations from Cell: The Unit of Life
  • D. This happens only in a laboratory and never in daily life
Answer

B. Write three points from Cell: The Unit of Life in your own words; that is enough for a short-answer start

Explanation

Write three points from Cell: The Unit of Life in your own words; that is enough for a short-answer start. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q12MCQ1 markEasy

Choose the correct statement related to Accuracy in the chapter Cell: The Unit of Life.

  • A. This idea is not part of the NCERT chapter
  • B. Use the terms used in the NCERT book; do not replace them with unofficial names
  • C. Ribosomes 70S and 80S
  • D. Plasma membrane fluid mosaic
Answer

B. Use the terms used in the NCERT book; do not replace them with unofficial names

Explanation

Use the terms used in the NCERT book; do not replace them with unofficial names. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q13MCQ1 markEasyRevision pick

Choose the correct statement related to Practice in the chapter Cell: The Unit of Life.

  • A. Mix MCQs with short answers so you remember both facts and explanations from Cell: The Unit of Life
  • B. The textbook says the opposite of this statement
  • C. Nucleus and chromosomes
  • D. Mitochondria: powerhouse
Answer

A. Mix MCQs with short answers so you remember both facts and explanations from Cell: The Unit of Life

Explanation

Mix MCQs with short answers so you remember both facts and explanations from Cell: The Unit of Life. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q14MCQ1 markEasy

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
  • B. Ribosomes 70S and 80S
  • C. This happens only in a laboratory and never in daily life
  • D. Plasma membrane fluid mosaic
Answer

D. Plasma membrane fluid mosaic

Explanation

Plasma membrane fluid mosaic. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q15MCQ1 markModerate

Choose the correct statement related to Mitochondria in the chapter Cell: The Unit of Life.

  • A. Plasma membrane fluid mosaic
  • B. Every chapter ends with keywords or a summary that is useful for one-mark answers
  • C. Mitochondria: powerhouse
  • D. Nucleus and chromosomes
Answer

C. Mitochondria: powerhouse

Explanation

Mitochondria: powerhouse. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q16MCQ1 markEasy

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. Mitochondria: powerhouse
  • B. CBSE often tests a concept by asking a daily-life example from the same chapter
  • C. Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology
  • D. Chloroplast
Answer

D. Chloroplast

Explanation

Chloroplast. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q17MCQ1 markEasyRevision pick

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. Chloroplast
  • B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
  • C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
  • D. Ribosomes 70S and 80S
Answer

D. Ribosomes 70S and 80S

Explanation

Ribosomes 70S and 80S. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q18MCQ1 markEasy

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. Write three points from Cell: The Unit of Life in your own words; that is enough for a short-answer start
  • B. Ribosomes 70S and 80S
  • C. Every chapter ends with keywords or a summary that is useful for one-mark answers
  • D. Nucleus and chromosomes
Answer

D. Nucleus and chromosomes

Explanation

Nucleus and chromosomes. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q19MCQ1 markEasy

Choose the correct statement related to Cell: The Unit of Life in the chapter Cell: The Unit of Life.

  • A. Mitochondria: powerhouse
  • B. Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology
  • C. Nucleus and chromosomes
  • D. This topic is only for college
Answer

B. Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology

Explanation

Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q20MCQ1 markModerate

Choose the correct statement related to Textbook first in the chapter Cell: The Unit of Life.

  • A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
  • B. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
  • C. Mix MCQs with short answers so you remember both facts and explanations from Cell: The Unit of Life
  • D. Cell: The Unit of Life is an NCERT chapter taught in CBSE Class 11 Biology
Answer

A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions

Explanation

Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. The other options mix ideas from nearby topics or reverse the textbook fact.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q211 Mark1 markEasy

Define or state: Keywords.

Answer

Every chapter ends with keywords or a summary that is useful for one-mark answers.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q221 Mark1 markEasy

Define or state: Examples.

Answer

CBSE often tests a concept by asking a daily-life example from the same chapter.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q231 Mark1 markEasy

Define or state: Diagrams.

Answer

If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q241 Mark1 markEasy

Define or state: Revision.

Answer

Write three points from Cell: The Unit of Life in your own words; that is enough for a short-answer start.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q251 Mark1 markModerate

Define or state: Accuracy.

Answer

Use the terms used in the NCERT book; do not replace them with unofficial names.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q261 Mark1 markEasy

Define or state: Practice.

Answer

Mix MCQs with short answers so you remember both facts and explanations from Cell: The Unit of Life.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q271 Mark1 markEasy

Define or state: Cell: The Unit of Life.

Answer

Plasma membrane fluid mosaic.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q281 Mark1 markEasy

Define or state: Mitochondria.

Answer

Mitochondria: powerhouse.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q291 Mark1 markEasy

Define or state: Cell: The Unit of Life.

Answer

Chloroplast.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q301 Mark1 markModerate

Define or state: Cell: The Unit of Life.

Answer

Ribosomes 70S and 80S.

Explanation

A one-mark answer should use the textbook term and one clear fact — not a long paragraph.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q61Assertion and Reason1 markModerate

Assertion (A): CBSE often tests a concept by asking a daily-life example from the same chapter.
Reason (R): Examples is a key idea in the chapter Cell: The Unit of Life.

Choose the correct option.

  • A. Both A and R are true, and R is the correct explanation of A.
  • B. Both A and R are true, and R is not the correct explanation of A.
  • C. A is true but R is false.
  • D. A is false but R is true.
Answer

A. Both A and R are true, and R is the correct explanation of A.

Explanation

Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q62Assertion and Reason1 markModerate

Assertion (A): If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures.
Reason (R): Diagrams is a key idea in the chapter Cell: The Unit of Life.

Choose the correct option.

  • A. Both A and R are true, and R is the correct explanation of A.
  • B. Both A and R are true, and R is not the correct explanation of A.
  • C. A is true but R is false.
  • D. A is false but R is true.
Answer

A. Both A and R are true, and R is the correct explanation of A.

Explanation

Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q63Assertion and Reason1 markModerate

Assertion (A): Write three points from Cell: The Unit of Life in your own words; that is enough for a short-answer start.
Reason (R): Revision is a key idea in the chapter Cell: The Unit of Life.

Choose the correct option.

  • A. Both A and R are true, and R is the correct explanation of A.
  • B. Both A and R are true, and R is not the correct explanation of A.
  • C. A is true but R is false.
  • D. A is false but R is true.
Answer

A. Both A and R are true, and R is the correct explanation of A.

Explanation

Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q64Assertion and Reason1 markDifficult

Assertion (A): Use the terms used in the NCERT book; do not replace them with unofficial names.
Reason (R): Accuracy is a key idea in the chapter Cell: The Unit of Life.

Choose the correct option.

  • A. Both A and R are true, and R is the correct explanation of A.
  • B. Both A and R are true, and R is not the correct explanation of A.
  • C. A is true but R is false.
  • D. A is false but R is true.
Answer

A. Both A and R are true, and R is the correct explanation of A.

Explanation

Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q65Assertion and Reason1 markModerate

Assertion (A): Mix MCQs with short answers so you remember both facts and explanations from Cell: The Unit of Life.
Reason (R): Practice is a key idea in the chapter Cell: The Unit of Life.

Choose the correct option.

  • A. Both A and R are true, and R is the correct explanation of A.
  • B. Both A and R are true, and R is not the correct explanation of A.
  • C. A is true but R is false.
  • D. A is false but R is true.
Answer

A. Both A and R are true, and R is the correct explanation of A.

Explanation

Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q66Assertion and Reason1 markModerate

Assertion (A): Plasma membrane fluid mosaic.
Reason (R): Cell: The Unit of Life is a key idea in the chapter Cell: The Unit of Life.

Choose the correct option.

  • A. Both A and R are true, and R is the correct explanation of A.
  • B. Both A and R are true, and R is not the correct explanation of A.
  • C. A is true but R is false.
  • D. A is false but R is true.
Answer

A. Both A and R are true, and R is the correct explanation of A.

Explanation

Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q67Assertion and Reason1 markModerate

Assertion (A): Mitochondria: powerhouse.
Reason (R): Mitochondria is a key idea in the chapter Cell: The Unit of Life.

Choose the correct option.

  • A. Both A and R are true, and R is the correct explanation of A.
  • B. Both A and R are true, and R is not the correct explanation of A.
  • C. A is true but R is false.
  • D. A is false but R is true.
Answer

A. Both A and R are true, and R is the correct explanation of A.

Explanation

Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

Q68Assertion and Reason1 markDifficult

Assertion (A): Chloroplast.
Reason (R): Cell: The Unit of Life is a key idea in the chapter Cell: The Unit of Life.

Choose the correct option.

  • A. Both A and R are true, and R is the correct explanation of A.
  • B. Both A and R are true, and R is not the correct explanation of A.
  • C. A is true but R is false.
  • D. A is false but R is true.
Answer

A. Both A and R are true, and R is the correct explanation of A.

Explanation

Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.

Meta

Class: Class 11 · Subject: Biology · Chapter: Cell: The Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).

FAQs

Are these official CBSE board questions?

No. They are original practice questions aligned to NCERT topics used in CBSE classrooms. Official sample papers are published on cbseacademic.nic.in.

Will these questions appear in the board exam?

Nobody can promise a question. Use them for revision of frequently tested concepts and exam-style practice.

Is the chapter list the latest NCERT list?

Yes, the catalog follows current NCERT textbooks used in CBSE schools (including new middle-stage books such as Ganita Prakash and Curiosity). Always match the book issued by your school.

How should I use the 100 questions?

Try the question first, then tap Show answer. Mix MCQs with long answers. Revise formulas and diagrams from the textbook alongside this set.

Where are NCERT solutions?

Open the NCERT-style practice link on this subject or chapter. For word-for-word textbook exercise answers, use the NCERT book itself; we do not copy solution keys from other websites.

What is the suggested URL pattern?

Hub /cbse/, then /cbse/class-11/, then subject and chapter slugs.

Why is this a separate URL?

So students searching for “1 Mark Questions” land on a filtered set, while the chapter page remains the full 100-question bank. Same facts, different search intent.

Today's 3-step path

Follow this loop every day: mixed test, current affairs, then today's subject. A new set arrives tomorrow.

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Next step

After this page, use these three links — do not open a random page.

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