Biology 9th Class Urdu Medium Chapter 4(Cells and Tissues) Online Short questions with Answers Preparation

Question # 1

What is M-Phase.

Ans 1: An this phase cell is divided into two daughter cells. This phase called M-Phase mitosis phase.

Question # 2

How does crossing over contribute to genetic variation in meiosis.

Ans 1: During crossing over, exchange of segments of non -sister chromatids of holomogous chromosomes take place. This process leads to recombination of genetic material and increase genetic diversity.

Question # 3

Define Telophase

Ans 1: In this phase, new nuclear evet one forms around each set of separated chromosoems. Both sets of charomosomes unfold back into chromatin.

Question # 4

Enlist the events that occur during the GI Phase of interphase.

Ans 1: Following events occur during the GI Phase of interphase.
Cell makes proteins and organelles and so grow in size.
Cells also make enzymes that are required is S phase for the replication of DNA.

Question # 5

Define disjunction

Ans 1: During meiosis-I chromosomes separate while during meiosis-II sister chromatide separte it is called disjunction

Question # 6

Difference between Chromatin and Chromosome

Ans 1: Chromatin :
Inthe beginning of prophae the chromosomes are not visibel as they are in the form of fine thread like structures called chromatin
Ans 2: Chromosome:
During prophase the chromatin begins to shorten thicken and coil by a process called condensatin. It results in the appearance of chromosomes.

Question # 7

What is meant by mitosisi.

Ans 1: Mitosis is the type of cell division in which a cell divides into two daughter cells, each with the same numebr of chromosoemes as were present in the parent cell.

Question # 8

What is the meant by cleavage furrow.

Ans 1: A cleavage furrow develops where the metaphase plate used to be. This furrow deepens and eentually pinches the parent cell into two daughter cells.

Question # 9

Differecne between Mitosis and Meiosis

Ans 1: Mitosis:
A paraent cell divides only onec two daughter cells are produced
Variations do not occur
Occurs in somatic ells
Homologous chromosomes do not form pairs
No crossing over occurs during prophase
Ans 2: Meiosis:
a parent cell undergoes two divisions four daughter cells are produced.
The chromosomes number is reduced by half in daughter cells
Variations occur due to crossing over
Occours in germ line cell
Homostogous chromosomes form pair

Question # 10

During which phase of mitosis sister chromatide separate.

Ans 1: During anaphase of mitosis the sister chromatide separate and mvoe towards the poles of the cell

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Online Short Questions For Chapter 4 "9th Class Biology Urdu Medium Chapter 4 Preparation "

Biology (New Book) - 9th Class Biology Urdu Medium Chapter 4 Preparation

What is M-Phase.

How does crossing over contribute to genetic variation in meiosis.

Define Telophase

Enlist the events that occur during the GI Phase of interphase.

Define disjunction

Difference between Chromatin and Chromosome

What is meant by mitosisi.

What is the meant by cleavage furrow.

Differecne between Mitosis and Meiosis

During which phase of mitosis sister chromatide separate.

Prepare Complete Set Wise Questions For Chapter 4 "9th Class Biology Urdu Medium Chapter 4 Preparation "

Set 1

Set 2

Set 3

9th Class Biology Urdu Medium Chapter 4 Preparation - Set 1

What is M-Phase.

How does crossing over contribute to genetic variation in meiosis.

Define Telophase

Enlist the events that occur during the GI Phase of interphase.

Define disjunction

Difference between Chromatin and Chromosome

What is meant by mitosisi.

What is the meant by cleavage furrow.

Differecne between Mitosis and Meiosis

During which phase of mitosis sister chromatide separate.

9th Class Biology Urdu Medium Chapter 4 Preparation - Set 2

What is G- Phase.

What is teh main purpose of the S phase in the cell cycle.

Difference between Chromosome and Chromatids

How is mitosis related to the process of regeneration.

What is the meant by cleavage furrow.

What is difference between benign and malignant tumors.

Enlist the events that occur during the GI Phase of interphase.

What are teh key events of anaphase in mitosis.

How is mitosis related to the process of regeneration.

Define Telophase

9th Class Biology Urdu Medium Chapter 4 Preparation - Set 3

How does crossing over contribute to genetic variation in meiosis.

What is difference between benign and malignant tumors.

Enlist the vents that occurs during Gi phase of interphase.

Difference between Centromeres and Centrioles

Define Binary fission

What is M-Phase.

Difference between Chromosome and Chromatids

What is the meant by cleavage furrow.

Difference between Centromeres and kinetochores

Define Anaphase

9th Biology Urdu Medium Chapter 4 Preperation