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Selina solutions for Class 10 Biology chapter 1 - Cell Cycle, Cell Division and Structure Of Chromosomes

Selina ICSE Concise Biology for Class 10

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Selina Selina ICSE Concise Biology Class 10

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Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes

Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes solutions [Page 0]

Name the repeating components of each DNA strand lengthwise.

 

Name the complex consisting of DNA strand and a core of histones.

Name the type of bond which joins the complementary nitrogenous bases. 

Name the three components of a nucleotide. 

Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes solutions [Page 0]

What are the rungs of the “DNA ladder” made of? 

 

Correct the following statements if there is any mistake.  

The four nitrogenous bases in the DNA are Guanine, Thiamine, Adrenaline and Cytosine. 

Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes solutions [Page 0]

What is a nucleosome? 

Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes solutions [Page 0]

The three sketch (A, B and C) are intended to represent the replication of DNA. What should
be their correct sequence starting with the first and ending with the last? …… 

 

 

Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes solutions [Page 0]

Choose the best option out of the four alternatives a, b, c and d 

In which one of the following options the two stages of mitosis have been given in correct
sequence?
(a) Prophase, anaphase
(b) Metaphase, telophase
(c) Anaphase, telophase
(d) Telophase, anaphase

Choose the best option out of the four alternatives a, b, c and d 

Synthesis phase in the cell cycle is called so for the synthesis of more of.
(a) RNA
(b) RNA and proteins
(c) DNA
(d) Glucose 

Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes solutions [Page 0]

Imagine one cell (A) has undergone one mitotic division and another cell (B) has completed
its meiotic division. How many cells would the two produce? 

Fill in the blank: 

Mitosis occurs in our ______ cells

Fill in the blank : 

Mitosis produces two daughter cells whereas meiosis produces ______ daughter cells.

Fill in the blank 

Meiosis occurs only in __________ cells.

Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes solutions [Page 0]

State the difference between: 

Centrosome and centromere: 

State the difference between: 

Aster and spindle fibres 

State the difference between:  

Haploid and diploid: 

“Gametes must be produced by meiosis for sexual reproduction”. Why is it so? 

Mention whether the following statements are (T) Or (F). Give reason in support of your answer. 

As you grow from childhood to adulthood, your skin cells divide only to replace such cells that are lost from the surface.

Mention whether the following statements are (T) Or (F). Give reason in support of your answer. 

The unfertilized human egg has half the number of chromosomes of the body cells. 

Mention whether the following statements are (T) Or (F). Give reason in support of your answer. 

Nuclear membrane in mitotically dividing cells remains intact up to the metaphase and disappears only in the telophase. 

Mention whether the following statements are (T) Or (F). Give reason in support of your answer. 

Mitotic cell division can be a mode of reproduction. 

Mention whether the following statements are (T) Or (F). Give reason in support of your answer.  

Crossing over between chromatids can occur only between homologous chromosomes. 

Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes solutions [Page 0]

Draw a labelled diagram to show the metaphase stage of mitosis in an animal cell having ‘6’ chromosomes. 

The diagram below represents a stage during cell division. Study the same and then answer the question that follow: 

 

a) Name the parts labelled 1, 2, and 3.
b) Identify the above stage and give a reason to support your answer.
c) Mention where in the body this type of cell division occurs.
d) Name the stage prior to this stage and draw a diagram to represent the same. 

The diagram given below represents a certain phenomenon which occurs during meiosis. Name and explain the phenomenon by using the terms – homologous chromosomes, chromatids, crossing over. 

 

 

Given below is a diagram representing a stage during mitotic cell division in an animal cell examine it carefully and answer the questions which follow. 

 

a) Identify the stage. Give one reason in support of your answer.
b) Name the cell organelle that forms the ‘aster’
c) Name the parts labelled 1, 2 and 3.
d) Name the stage that follows the one shown above, how is that stage identified?
e) Mention two differences between mitosis and meiosis with regards to:
(i) The number of daughter cells produced.
The chromosome number in the daughter cells.

Given below are three diagrammatic sketches (A, B and C) of one and the same particular phase during mitotic type of cell division.

 (a) Identify the phase
(b) What is the diploid number of chromosomes shown in them?
(c) Identify whether these are animal cells or plant cells?
(d) Which of these is/are shown in correct direction?
(i) Only A
(ii) Only B
(iii) Only A and C
(iv) All the three

Shown below are four stages (A, B, C, D) (not in sequence) of a certain kind of cell division. 

 

(a) Is it a plant cell or an animal cell? Give two reasons ___
(b) Is it undergoing mitosis or meiosis?
(c)What should be the correct sequence of these four stages among themselves?
(d) Name the stage that should precede the earliest of these stages
(e)Draw the stage names above inside the blank space provided.

Chapter 1: Cell Cycle, Cell Division and Structure Of Chromosomes

Selina Selina ICSE Concise Biology Class 10

Selina ICSE Concise Biology for Class 10 - Shaalaa.com

Selina solutions for Class 10 Biology chapter 1 - Cell Cycle, Cell Division and Structure Of Chromosomes

Selina solutions for Class 10 Biology chapter 1 (Cell Cycle, Cell Division and Structure Of Chromosomes) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Selina ICSE Concise Biology for Class 10 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com are providing such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 10 Biology chapter 1 Cell Cycle, Cell Division and Structure Of Chromosomes are Cell Division and Cell Cycle, Significance of Mitosis, Significance and Major Differences Between Mitotic and Meiotic Division, Meiosis as a Reduction Division, Homologous Chromosomes, Mitosis and Its Stages., Crossing Over Leading to Variations.

Using Selina Class 10 solutions Cell Cycle, Cell Division and Structure Of Chromosomes exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 10 prefer Selina Textbook Solutions to score more in exam.

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