CELL CYCLE AND CELL DIVISION

 

GANGWAR SIR BAREILLY

BIOLOGY

Class: 11 (2025-26)

CLASS TEST

TIME: 1.5 HOURS	M.M.: 50

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

 

Q.NO.	QUESTIONS	MARKS
MULTIPLE CHOICE QUESTIONS (MCQS) Questions 1 to 5 (5 questions × 1 mark each)
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
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
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
4	Which of the following is NOT a phase of mitosis? A. Prophase B. Metaphase C. Anaphase D. Interphase	1
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
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.
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
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
VERY SHORT ANSWER QUESTIONS Questions 8 to 12 (5 questions × 2 marks each)
8	What is the significance of the G0 phase in the cell cycle?	2
9	Name the stage of mitosis where chromosomes align at the equatorial plate.	2
10	Differentiate between cytokinesis in animal and plant cells.	2
11	What is the role of cyclins in the cell cycle?	2
12	Explain the term 'synapsis' in the context of meiosis.	2
SHORT ANSWER QUESTIONS Questions 13 to 18 (6 questions × 3 marks each)
13	Identify the phase of the cell cycle where DNA replication occurs.	3
14	Differentiate between cytokinesis in plant and animal cells.	3
15	Explain the significance of checkpoints in the cell cycle.	3
16	What would happen if a cell skipped the G1 phase of interphase?	3
17	List two key differences between mitosis and meiosis.	3
18	Name the protein complex that regulates progression through the cell cycle.	3
LONG ANSWER QUESTIONS Questions 19 to 21 (3 questions × 5 marks each)
19	Explain the significance of the G1 phase in the cell cycle with reference to its checkpoint mechanisms.	5
20	Compare and contrast mitosis and meiosis with respect to their phases, outcomes, and biological significance.	5
21	Describe the molecular events during the M phase of the cell cycle, focusing on the role of cyclins and CDKs.	5