GANGWAR SIR BAREILLY
BIOLOGY
Class: 11 (2025-26)
CLASS TEST
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TIME: 1.5 HOURS |
M.M.: 50 |
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General Instructions:
• This question paper
contains 21 questions.
• All questions are
compulsory.
• Q.1 to 5 (Multiple Choice
Questions (MCQs)): 5 questions. Each question carries 1 mark.
• Q.6 to 7 (Assertion Reason
Questions): 2 questions. Each question carries 1 mark.
• Q.8 to 12 (Very Short
Answer Questions): 5 questions. Each question carries 2 marks.
• Q.13 to 18 (Short Answer
Questions): 6 questions. Each question carries 3 marks.
• Q.19 to 21 (Long Answer
Questions): 3 questions. Each question carries 5 marks.
Topics Covered:
• Cell Cycle and Cell
Division
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Q.NO. |
QUESTIONS |
MARKS |
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MULTIPLE CHOICE QUESTIONS (MCQS) Questions 1 to 5 (5 questions × 1 mark each) |
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1 |
Which of the following is the correct
sequence of stages in the cell cycle? A. G1 → S → G2 → M B. S → G1 → G2 → M C. G1 → G2 → S → M D. M → G1 → G2 → S |
1 |
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2 |
During which phase of the cell cycle
does DNA replication occur? A. G1 phase B. S phase C. G2 phase D. M phase |
1 |
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3 |
What is the main event that occurs
during the G2 phase of the cell cycle? A. Cell growth B. DNA replication C. Preparation for mitosis D. Protein synthesis |
1 |
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4 |
Which of the following is NOT a phase
of mitosis? A. Prophase B. Metaphase C. Anaphase D. Interphase |
1 |
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5 |
What is the significance of cytokinesis
in the cell cycle? A. Division of the nucleus B. Division of the cytoplasm C. Replication of DNA D. Synthesis of proteins |
1 |
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ASSERTION REASON QUESTIONS Questions 6 to 7 (2 questions × 1 mark each) Instructions: The
following questions consist of two statements – Assertion (A) and Reason (R). Answer
these questions by selecting the appropriate option given below: 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. |
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6 |
Assertion (A): The G1 phase is the
longest phase of the cell cycle.
Reason (R): In the G1 phase, the cell grows in size and synthesizes
proteins required for DNA replication. |
1 |
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7 |
Assertion (A): Cytokinesis in plant
cells occurs through the formation of a cell plate. Reason (R): Plant cells have a rigid cell
wall that prevents the formation of a cleavage furrow. |
1 |
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VERY SHORT ANSWER QUESTIONS Questions 8 to 12 (5 questions × 2 marks each) |
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8 |
What is the significance of the G0
phase in the cell cycle? |
2 |
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9 |
Name the stage of mitosis where
chromosomes align at the equatorial plate. |
2 |
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10 |
Differentiate between cytokinesis in
animal and plant cells. |
2 |
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11 |
What is the role of cyclins in the cell
cycle? |
2 |
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12 |
Explain the term 'synapsis' in the
context of meiosis. |
2 |
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SHORT ANSWER QUESTIONS Questions 13 to 18 (6 questions × 3 marks each) |
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13 |
Identify the phase of the cell cycle
where DNA replication occurs. |
3 |
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14 |
Differentiate between cytokinesis in
plant and animal cells. |
3 |
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15 |
Explain the significance of checkpoints
in the cell cycle. |
3 |
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16 |
What would happen if a cell skipped the
G1 phase of interphase? |
3 |
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17 |
List two key differences between
mitosis and meiosis. |
3 |
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18 |
Name the protein complex that regulates
progression through the cell cycle. |
3 |
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LONG ANSWER QUESTIONS Questions 19 to 21 (3 questions × 5 marks each) |
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19 |
Explain the significance of the G1
phase in the cell cycle with reference to its checkpoint mechanisms. |
5 |
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20 |
Compare and contrast mitosis and
meiosis with respect to their phases, outcomes, and biological significance. |
5 |
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21 |
Describe the molecular events during
the M phase of the cell cycle, focusing on the role of cyclins and CDKs. |
5 |
