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NEET Exam  >  NEET Test  >  Biology Class 11  >  Test: Cell Cycle (NCERT) - NEET MCQ

Cell Cycle (NCERT) - Free MCQ Practice Test with solutions, NEET Biology


MCQ Practice Test & Solutions: Test: Cell Cycle (NCERT) (10 Questions)

You can prepare effectively for NEET Biology Class 11 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Cell Cycle (NCERT)". These 10 questions have been designed by the experts with the latest curriculum of NEET 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Test: Cell Cycle (NCERT) - Question 1
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Read the following statements about cell division and select the correct ones.
(i) M phase represents the phase when actual cell division occurs and I phase represents the phase between two successive M phases.
(ii) In the 24 hours average duration of cell cycle of a human cell, cell division proper lasts for only about an hour.
(iii) M phase constitutes more than 95% of the duration of cell cycle.

Detailed Solution: Question 1

Cell cycle consists of two basic phases, long non-dividing I phase and a short-dividing M phase. In the average duration of 24 hours in the cell cycle of a dividing human cell, M phase lasts for one hour (less than 5% of total ) while I phase or interphase occupies 75-95% of total generation time.

Topic in NCERT: CELL CYCLE AND CELL DIVISION

Line in NCERT: "The M Phase represents the phase when the actual cell division or mitosis occurs and the interphase represents the phase between two successive M phases." "In the 24 hour average duration of cell cycle of a human cell, cell division proper lasts for only about an hour." "The interphase lasts more than 95% of the duration of cell cycle."

Test: Cell Cycle (NCERT) - Question 2
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Select the incorrect statement regarding S phase of interphase

Detailed Solution: Question 2

S or synthesis phase marks the period during which DNA synthesis or replication takes place. DNA synthesis or replication takes place. During this time the amount of DNA per cell doubles, however, there is no increase in the chromosome number.

Topic in NCERT: S phase (Synthesis)

Line in NCERT: "However, there is no increase in the chromosome number; if the cell had diploid or 2n number of chromosomes at G₁, even after S phase the number of chromosomes remains the same, i.e., 2n."

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Test: Cell Cycle (NCERT) - Question 3
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Human cells in culture show a cell cycle to be completed in approximately 

Detailed Solution: Question 3

(i) Cell division is the process by which a cell divides to form to nearly equal daughter cell which resembles the parent. The cell cycle is the sequence of events which occur during the cell growth and cell division. It is completed into two steps interphase and M-phase.
(ii) In the cell cycle interphase is the period between the end of one division to the beginning of next cell division. It is known as the resting phase. In the case of human beings it is around 24 hours then the M phase takes place.

Topic in NCERT: PHASES OF CELL CYCLE

Line in NCERT: "A typical eukaryotic cell cycle is illustrated by human cells in culture. These cells divide once in approximately every 24 hours."

Test: Cell Cycle (NCERT) - Question 4
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In a somatic cell cycle, DNA synthesis takes place in which of the following phases?

Detailed Solution: Question 4

  • The cell cycle consists of several distinct phases, including interphase and mitosis. Interphase, which is the longest phase of the cell cycle, can be further divided into three subphases: G1 (gap phase 1), S (synthesis phase), and G2 (gap phase 2).
  • During the S phase, DNA synthesis occurs. This is the period when the cell replicates its DNA to ensure that each daughter cell produced during cell division receives a complete set of genetic information.
  • The DNA replication process involves unwinding and separating the two strands of the DNA double helix and synthesising new complementary strands using the existing strands as templates. As a result, each chromosome is duplicated, and sister chromatids are formed, which remain attached at the centromere.
  • After the S phase, the cell progresses into the G2 phase, where it prepares for cell division. The subsequent phase is mitosis, which includes prophase, prometaphase, metaphase, anaphase, and telophase, leading to the separation of sister chromatids and the formation of two identical daughter cells.
  • Therefore, DNA synthesis occurs specifically during the S phase of the somatic cell cycle.

Topic in NCERT: S phase (Synthesis)

Line in NCERT: "S phase marks the period during which DNA synthesis or replication takes place."

Test: Cell Cycle (NCERT) - Question 5
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The correct sequence of phases of cell cycle is?

Detailed Solution: Question 5

The cell cycle starts from interphase. Interphase is the phase in the cell cycle that prepares a cell nucleus for division. It has three stages — G1, S and G2 G1, Phase is the longest stage of interphase, also first growth phase or post-mitotic gap phase. Both and its nucleus grow in size. There is synthesis proteins, nucleotides, amino acids for histones an rich compounds. In S-Phase chromosomes along with their DNAs replicate. DNA content doubles during this phase. In G2-Phase there is increased synthesis of RNA and proteins. Cell organelles or their precursorsmultiply. Cell grows in Size.

Topic in NCERT: CELL CYCLE AND CELL DIVISION

Line in NCERT: "G₁ phase corresponds to the interval between mitosis and initiation of DNA replication. During G₁ phase the cell is metabolically active and continuously grows but does not replicate its DNA. S or synthesis phase marks the period during which DNA synthesis or replication takes place. During this time the amount of DNA per cell doubles. If the initial amount of DNA is denoted as 2C then it increases to 4C. However, there is no increase in the chromosome number; if the cell had diploid or 2n number of chromosomes at G₁, even after S phase the number of chromosomes remains the same, i.e., 2n."

Test: Cell Cycle (NCERT) - Question 6
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Which of the following phases of the cell cycle is not a part of interphase?

Detailed Solution: Question 6

Interphase in a cell cycle has three stages —G1,S and G2.M− phase is not a part of interphase.

Topic in NCERT: CELL CYCLE AND CELL DIVISION

Line in NCERT: "The stages through which a cell passes from one division to the next is called the cell cycle. Cell cycle is divided into two phases called (i) Interphase – a period of preparation for cell division, and (ii) Mitosis (M phase) – the actual period of cell division."

Test: Cell Cycle (NCERT) - Question 7
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The cells that do not divide further, exit G1 phase to enter an inactive stage called_____of the cell cycle.

Detailed Solution: Question 7

The phase in which cells fail to divide further (do not enter S- phase after G1 -phase) and undergo differentiation is known as G0 phase or quiescent stage. It occurs due to non availability of mitogen and energy rich compounds. The cells remain metabolically active, grow in size and differentiate for particular function after attaining a particular shape.

Topic in NCERT: CELL CYCLE AND CELL DIVISION

Line in NCERT: "These cells that do not divide further exit G₁ phase to enter an inactive stage called quiescent stage (G) of the cell cycle."

Test: Cell Cycle (NCERT) - Question 8
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Assertion (A): In adult animals, certain cells like heart cells do not undergo mitotic division and enter a quiescent stage.

Reason (R): Cells in the quiescent stage (G0) remain metabolically active but do not proliferate unless necessary.

 

Detailed Solution: Question 8

  • The Assertion is true because it correctly states that certain adult animal cells, such as heart cells, do not divide and enter a quiescent stage.
  • The Reason is also true as it accurately describes the nature of cells in the G0 phase, indicating they are metabolically active but not proliferative.
  • Furthermore, the Reason correctly explains the Assertion by providing the functional context of why these cells do not divide.

Topic in NCERT: CELL CYCLE AND CELL DIVISION

Line in NCERT: "Some cells in the adult animals do not appear to exhibit division (e.g., heart cells) and many other cells divide only occasionally, as needed to replace cells that have been lost because of injury or cell death. These cells that do not divide further exit G₁ phase to enter an inactive stage called quiescent stage (G) of the cell cycle. Cells in this stage remain metabolically active but no longer proliferate unless called on to do so depending on the requirement of the organism."

Test: Cell Cycle (NCERT) - Question 9
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Assertion (A): In animals, diploid somatic cells primarily undergo mitosis, with exceptions like haploid male honey bees.

Reason (R): Plants can show mitotic divisions in both haploid and diploid cells, demonstrating greater versatility in cell division.

 

Detailed Solution: Question 9

  • The Assertion is true; it accurately reflects that in the animal kingdom, mitotic cell division predominantly occurs in diploid somatic cells, with exceptions such as haploid male honey bees.
  • The Reason is also true, as it correctly states that plants can undergo mitotic divisions in both haploid and diploid cells.
  • However, the Reason does not explain the Assertion directly, as the flexibility of cell division in plants does not relate to the primary mitotic nature of animal cells.

Topic in NCERT: Mitosis in Animals and Plants

Line in NCERT: "In animals, mitotic cell division is only seen in the diploid somatic cells. However, there are few exceptions to this where haploid cells divide by mitosis, for example, male honey bees. Against this, the plants can show mitotic divisions in both haploid and diploid cells."

Test: Cell Cycle (NCERT) - Question 10
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Which of the following statements regarding the cell cycle is/are correct?

i. DNA replication occurs continuously throughout the cell cycle.

ii. The cell cycle consists of a series of stages that lead to the division of a cell into two daughter cells.

iii. Cell growth in terms of cytoplasmic increase is a continuous process.

iv. The distribution of replicated chromosomes to daughter nuclei is a simple and straightforward event.

Detailed Solution: Question 10

  • Statement i is incorrect because DNA replication only occurs during a specific stage of the cell cycle (S phase), not continuously throughout the cycle.
  • Statement ii is correct as the cell cycle includes phases (G1, S, G2, and M) that collectively lead to cell division.
  • Statement iii is correct since cell growth (cytoplasmic increase) does happen continuously throughout the cell cycle.
  • Statement iv is incorrect because the distribution of replicated chromosomes to daughter nuclei involves complex events, particularly during mitosis.

Thus, the correct statements are ii and iii, making Option A the correct answer.

Topic in NCERT: CELL CYCLE

Line in NCERT: "Although cell growth (in terms of cytoplasmic increase) is a continuous process, DNA synthesis occurs only during one specific stage in the cell cycle."

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This test contains 10 MCQs on Cell Cycle (NCERT) with detailed solutions for each question. It is part of the Biology Class 11 course on EduRev, designed to align with the current NEET syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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