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Chapters
1: Cell Cycle and Cell Division
▶ 2: Structure of Chromosome
Chapter 3: Genetics
Unit 2: Plant Physiology
Chapter 4: Absorption by Roots
Chapter 5: Transpiration
Chapter 6: Photosynthesis
Chapter 7: Chemical Coordination in Plants
Unit 3: Human Anatomy and Physiology
Chapter 8: Circulatory System
Chapter 9: Human Excretory System
Chapter 10: Nervous System
Chapter 11: Sense Organs
Chapter 12: Endocrine System
Chapter 13: Reproductive System
Unit 4: Population
Chapter 14: Population
Unit 5: Human Evolution
Chapter 15: Human Evolution
Unit 6: Pollution
Chapter 16: Pollution
![Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 2 - Structure of Chromosome - Shaalaa.com](/images/biology-english-class-10-icse_6:7181a54a5d284da8b50dd2f92022a1f6.jpg "Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 2 - Structure of Chromosome")
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Solutions for Chapter 2: Structure of Chromosome
Below listed, you can find solutions for Chapter 2 of CISCE Lakhmir Singh for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई.
Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई 2 Structure of Chromosome Intex Quesions [Pages 25 - 27]
TEST YOUR UNDERSTANDING - 1 Fill in the Blanks
Chromosomes are thought to have been discovered in 1842 by ______.
______ is a unit of DNA on a chromosome that controls a specific characteristic of an organism.
Interphase ______ shows the chromatin network.
True or False.
Chromatin network is present in a highly diffused and uncoiled form in the interphase nucleus.
True or False.
The chromosome extremities or terminal regions, on either side are called telophase.
THINK AND ANSWER
The cells of the leaf tip of a plant contain 20 chromosomes. Each cell of the pollen tetrad of such a plant would contain:
4 chromosomes
10 chromosomes
16 chromosomes
20 chromosomes
“Cell division is a type of reproduction in unicellular organism.” Justify.
TEST YOUR UNDERSTANDING - 2 Fill in the Blanks
______ and ______ gave the semi-conservative model of replication.
Each DNA nucleotide consists of a ______, a ______ and a phosphate group.
True or False.
DNA is the hereditary material in humans only as it contains the genetic information.
True or False.
DNA is formed in all reproducing cell and the process is known as DNA transcription.
True or False.
The gametes are called reproductive cells, which contain only half the amount of DNA.
Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई 2 Structure of Chromosome EXERCISE [Page 29]
Objective Questions
True or False.
Chromosomes other than the pair of sex chromosomes are called alleles.
True or False.
Chromosomes are thread-like structures usually present in the nucleus and cytoplasm of a cell.
True or False.
Chromosomes occur only during the cell duplication.
True or False.
During DNA replication, multiple copies of DNA are formed in a reproducing cell.
Solutions for 2: Structure of Chromosome
Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 2 - Structure of Chromosome
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