In this article we are providing the NCERT solutions for Class 11 Biology chapter 10, Cell Cycle and Cell Division. All the solutions are explained in a way to help students easily understand the concepts and theories implied. Also these solutions have been reviewed/ revised by our subject matter experts to deliver an error free study material.
Some prominent features of class 11 Biology NCERT solutions are:
So, to get desired result in exams, it’s very necessary for students to solve the questions given at the end of each chapter and then refer the NCERT solutions given here to check the correctness of their own answers.
Some of the questions and their solutions from NCERT Solutions for Class 11: Cell Cycle and Cell Division, are as follows:
Q. What is the average cell cycle span for a mammalian cell?
Ans. The average cell cycle span for a mammalian cell is approximately 24 hours.
Q. Describe the events taking place during interphase.
Ans. During interphase a number of changes take place so as to prepare the cell for division. During this period, the cell experiences growth and DNA replication.
The interphase is divided into three phases, which are as follows:
(i) G1 phase (Gap 1): During this phase, the cell is metabolically active and continuously grows and prepares its DNA for replication.
(ii) S phase (Synthesis): During this phase, DNA synthesis or replication takes place. In this phase, the amount of DNA per cell doubles, but the number of chromosomes remain the same.
(iii) G2 phase (Gap 2): During this phase, proteins and RNA synthesis take place so to prepare the cell for mitosis. The cell growth continues during this phase.
Q. What is G0 (quiescent phase) of cell cycle?
Ans. G0 (quiescent phase) also known as the inactive stage of the cell cycle, is the stage when the cell remains metabolically active, but do not proliferate unless called on to do so. Such cells are used for replacing the cells lost during injury.
Q. Why is mitosis called equational division?
Ans. Mitosis is known as equational division because the daughter cells produced in this process have the same number of chromosomes as that in the parent cell.
Q. Find examples where the four daughter cells from meiosis are equal in size and where they are found unequal in size.
(a) Spermatogenesis or the formation of sperms in human beings occurs by the process of meiosis. It results in the formation of four equal-sized daughter cells.
(b) Oogenesis or the formation of ovum in human beings occurs by the process of meiosis. It results in the formation of four daughter cells which are unequal in size.
Get the complete the NCERT solutions for Class 11: Cell Cycle and Cell Division, from the following link:
Students may download the NCERT solutions for Class 11 Biology chapter- Cell Cycle and Cell Division, in the form of PDF.
Class 11 Biology NCERT Chapter: Cell Cycle and Cell Division
At the time of solving the NCERT questions, if you find yourself puzzled or unaware of any particular concept, then you should go through the NCERT chapter once again. Taking a thorough reading of the theories given in NCERT book will help you understand the problem discussed in a question and then come with an appropriate answer.
Main topics discussed in Class 11 Biology chapter: Cell Cycle and Cell Division are:
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