NCERT Solutions For Class 11 Biology Chapter 10: Cell Cycle and Cell Division

NCERT Solutions for Class 11 Biology Chapter 10 Cell Cycle and Cell Division are provided in the article below. It includes all the important definitions, concepts, and methodologies that will be really beneficial for the students appearing for CBSE Class 11 Exam 2022-23. The important topics that are included in this chapter are:

Expected no. of Questions: 2-3 questions of around 5 marks.

Download PDF: NCERT Solutions for Class 11 Biology Chapter 10 Cell Cycle and Cell Division

NCERT Solutions for Class 11 Biology Chapter 10

Class 11 Biology Chapter 10 Cell Cycle and Cell Division: Important Topics

A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division.

Interphase

Interphase, also known as the resting phase of the cell cycle, is the time during which the cell prepares for division by undergoing both cell growth and DNA replication. It occupies around 95% time of the overall cycle. The interphase is divided into three phases, G1 phase (Gap 1), S phase (Synthesis), and G2 phase (Gap 2).

M Phase

This is considered to be the mitotic phase or the phase of the equational division as the cell undergoes a complete reorganization in order to give birth to a progeny that has the same number of chromosomes as the parent cell.

The mitotic phase is categorized into four overlapping stages:

Prophase,
Metaphase,
Anaphase, and
Telophase

Cytokinesis

In this phase, the cytoplasm of the cell divides, and begins as soon as the mitosis ends. Plant cells are much tougher than animal cells, as they have a rigid cell wall and high internal pressure. Thus, cytokinesis occurs in plant and animal cells differently.

Chapter Related Links:

Difference Between Mitosis and Meiosis	Nuclear Membrane	Lysosomal Storage Disease
Interphase	Chromosome Definition	Meiosis Cell Division
Diagram for Meiosis	Difference Between Haploid and Diploid	Mitosis Metaphase

CBSE Class 11 Biology Study Guides:

CBSE Class 11 Biology Syllabus	CBSE Class 11 Biology NCERT Textbook	CBSE Class 11 Biology Sample Paper
Biology Study Material	Biology MCQs	Difference between in Biology

CBSE CLASS XII Related Questions

1.
The RNA triplet UAG acts as a stop codon which terminates the synthesis of a polypeptide. Below is given a strand of DNA which codes for four amino acids.
In which position will an insertion of a thymine nucleotide result in the termination of translation?
DNA strand:
3′ T C C A C C C G A T G C 5′
- 3′ TCCACCCGATGC 5'
- 3′ TCCACCCGATGC 5′
- 3′ TCCACCCGATGC 5′
- 3′ TCCACCCGATGC 5′
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Student to attempt either option (A) or (B):
(A) How is the interaction between Ophrys and its specific bee pollinator one of the best examples of co-evolution? Explain.
OR
(B) Arrange the given important steps of decomposition in their correct order of occurrence in the breakdown of complex organic matter and explain the fourth step in the process.
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3.
Describe ‘Ex situ’ approach for conserving biodiversity. Give any two examples.
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4.
Read the passage given below and answer the question.
Food chains ‘P’ and ‘Q’ form an interconnection. ‘P’ initiates with wheat grass whose population supports a few grasshoppers, frogs and snakes.
‘Q’ starts with dead decaying leaves of wheat grass which are eaten by earthworms and then food chain is continued with frog of food chain ‘P’.
Identify the types of food chains ‘P’ and ‘Q’:
- A
- B
- C
- D
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5.
Student to attempt either option (A) or (B):
(A) Name the Indian crop variety for which, in 1997, an American company got patent rights through the US Patent and Trademark Office. This is considered a case of Biopiracy. Justify.
OR
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Explain why the milk produced by the mother during the initial days of lactation is considered to be very essential for the newborn infant.
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