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Frank solutions for Class 10 Biology chapter 2 - Structure of Chromosomes

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Frank Frank Class 10 Biology Part 2

Frank Class 10 Biology Part 2 - Shaalaa.com

Chapter 2: Structure of Chromosomes

Exercise

Chapter 2: Structure of Chromosomes Exercise Exercise solutions [Page 20]

Exercise | Q 1 | Page 20

What is chromatin?

Exercise | Q 2 | Page 20
How is chromatin observed in an interphase cell?
Exercise | Q 3 | Page 20
What happens to chromatin during prophase and metaphase of mitosis?
Exercise | Q 4 | Page 20
What are chromosomes? Why are they called so?
Exercise | Q 5.01 | Page 20

Mention the contribution of the scientist given below in the study of chromosome:

Strasburger

Exercise | Q 5.02 | Page 20

Mention the contribution of the scientist given below in the study of chromosome:

Balbiani

Exercise | Q 5.03 | Page 20

Mention the contribution of the scientist given below in the study of chromosome:

Waldeyer

Exercise | Q 5.04 | Page 20

Mention the contribution of the scientist given below in the study of chromosome:

Sutton and Boveri

Exercise | Q 6 | Page 20
Briefly mention the structure of a typical chromosome.
Exercise | Q 7.01 | Page 20

Write a sentence of the following:
Sheath

Exercise | Q 7.02 | Page 20

Write a sentence of the following:
Matrix

Exercise | Q 7.03 | Page 20

Write a sentence of the following:
Chromonemata

Exercise | Q 7.04 | Page 20

Write a sentence of the following:
Centromere

Exercise | Q 7.05 | Page 20

Write a sentence of the following:
Secondary constriction

Exercise | Q 7.06 | Page 20

Write a sentence of the following:
Telomere

Exercise | Q 8 | Page 20
At which stage are chromosomes best observed?
Exercise | Q 9 | Page 20
What are autosomes? How many are present in man?
Exercise | Q 10 | Page 20
What do you understand by sex chromosomes?
Exercise | Q 11 | Page 20
How are sex chromosomes significant?
Exercise | Q 12 | Page 20
What are the sex chromosomes in man?
Exercise | Q 13 | Page 20
Give the importance of chromosomes as hereditary material.
Exercise | Q 14 | Page 20
Name the two nucleic acids. Who discovered them?
Exercise | Q 15 | Page 20
What are nucleic acids made of?
Exercise | Q 16 | Page 20
Mention the names of the nitrogen bases present in DNA.
Exercise | Q 17 | Page 20
Mention three differences between DNA and RNA.
Exercise | Q 18 | Page 20
Write a short note on features of DNA.
Exercise | Q 19 | Page 20
Who described the detailed structure of DNA?
Exercise | Q 20 | Page 20
What is the importance of DNA?
Exercise | Q 21 | Page 20
What are the rungs of the "DNA ladder" made of?
Exercise | Q 22 | Page 20
Name the repeating components of each DNA strand lengthwise.
Exercise | Q 23.1 | Page 20

Fill in the blank:
DNA replicates in the ______ of the cell cycle.

Exercise | Q 23.2 | Page 20

Fill in the blank:
Chromatin fibre is made up of DNA and ______.

Exercise | Q 23.3 | Page 20

Fill in the blanks:
There are two nucleic acids ______ and ______.

Exercise | Q 23.4 | Page 20

Fill in the blank:
DNA acts as director of ______ synthesis.

Exercise | Q 23.5 | Page 20

Fill in the blank:
DNA stands are made up of, pentose sugar and four types of ______ bases.

Chapter 2: Structure of Chromosomes Exercise Exercise solutions [Page 21]

Exercise | Q 1.01 | Page 21

State whether the following sentence is true or false:

Each spiral of the DNA has 12 nucleotides.

  • True

  • False

Exercise | Q 1.02 | Page 21

State whether the following sentence is true or false:

The two DNA chains are parallel to each other.

  • True

  • False

Exercise | Q 1.03 | Page 21

State whether the following sentence is true or false:

Genes are arranged in a linear order on a chromosome.

  • True

  • False

Exercise | Q 1.04 | Page 21

State whether the following sentence is true or false:

In any specimen of DNA, the total molar amount of A + G = T+ C.

  • True

  • False

Exercise | Q 2 | Page 21

Label the lettered parts of the given figure and answer the following questions:
(i) What does this diagram represent?
(ii) What is the importance of'd'?
(iii) What are the 'staining' properties of 'b' and 'c'?
(iv) Who gave the term used for this structure today?
(v) What is a?
(vi) Is 'e' present in all chromosomes?

Chapter 2: Structure of Chromosomes Exercise Exercise solutions [Pages 21 - 31]

Exercise | Q 1.01 | Page 21

Choose the correct answer:
The network of fine threads in nucleus is called __________

  • chromosome 

  • chromonemata 

  • chromatid 

  • chromatin

Exercise | Q 1.02 | Page 21

Choose the correct answer:
The term 'chromosome' was coined by ___________

  • Balbiani 

  • Darwin 

  • Waldeyer 

  • Sutton and Boveri

Exercise | Q 1.03 | Page 21

Choose the correct answer:
The primary constriction contains ______________

  • centromere 

  • centriole 

  • chromatid 

  • telomere

Exercise | Q 1.04 | Page 21

Choose the correct answer:
This structure is not present in all chromosomes ___________

  • centromere

  • chromonemata

  • secondary constriction

  • telomere

Exercise | Q 1.05 | Page 21

Choose the correct answer:
Chromosomes are thin and thread like at __________

  • interphase

  • metaphase 

  • anaphase 

  • pachytene

Exercise | Q 1.06 | Page 21

Choose the correct answer:
Thick short chromosomes can be observed at (in mitosis) ___________

  • metaphase 

  • telophase 

  • anaphase 

  • prophase

Exercise | Q 1.07 | Page 21

Choose the correct answer:
Chromosomes largely consist of _______________

  • DNA and histones

  • DNA and RNA

  • RNA and histones

  • histones and ions

Exercise | Q 1.08 | Page 21

Choose the correct answer:
Chromosome number of man is _____________

  • 46

  • 23

  • 64

  • 45

Exercise | Q 1.09 | Page 21

Choose the correct answer:
Telocentric chromosomes are _________________

  • I shaped 

  • V shaped

  • J shaped 

  • L shaped

Exercise | Q 1.1 | Page 31

Choose the correct answer:
A 'V' shaped chromosomes has to _____________

  • acrocentric

  • metacentric

  • telocentric

  • sub-metacentric

Exercise | Q 1.11 | Page 21

Choose the correct answer:
Sex chromosomes in man are _____________

  • XX 

  • YY

  • XY

  • none of these

Exercise | Q 1.12 | Page 21

Choose the correct answer:
Sex of an individual is determined by ____________

  • autosomes

  • sex chromosomes

  • lampbrush

  • polytene chromosomes

Exercise | Q 1.13 | Page 21

Choose the correct answer :
DNA model was given by ___________

  • Watson and Crick

  •  Sutton and Boveri

  • Balbiani and Darwin

  • Waldeyer and Carlson

Exercise | Q 1.14 | Page 21

Choose the correct answer :
 Adenine is a __________

  • nitrogen base

  • pentose sugar

  • fatty acid

  • enzyme

Exercise | Q 1.15 | Page 21

Choose the correct answer :
Which of these is not present in DNA?

  • Adenine 

  • Thymine 

  • Uracil 

  • Cytosine

Exercise | Q 1.16 | Page 21

Choose the correct answer :
RNA has uracil instead of ____________

  • adenine 

  • thymine 

  • guanine 

  • cytosine

Exercise | Q 1.17 | Page 21

Choose the correct answer :
Spirally coiled double strands are observed in ____________

  • DNA 

  • chromosome 

  • RNA 

  • chromatin

Chapter 2: Structure of Chromosomes

Exercise

Frank Frank Class 10 Biology Part 2

Frank Class 10 Biology Part 2 - Shaalaa.com

Frank solutions for Class 10 Biology chapter 2 - Structure of Chromosomes

Frank solutions for Class 10 Biology chapter 2 (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 Frank Class 10 Biology Part 2 solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Class 10 Biology chapter 2 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, Structure of Chromosome, Chromatin, Chromatid, Gene Structure of DNA , RNA, Centromere.

Using Frank Class 10 solutions 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 Frank Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 10 prefer Frank Textbook Solutions to score more in exam.

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