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

Question # 1

What is the differecne between prophase of mitosis and prophase -I of meiosis-I.

Ans 1: Prophase of mitosis:
Pairing of homolgous chromosomes does not take palce
Crossing over is absent
Ans 2: Prophase -I of mesiosis-i:
During Prophase-I paring of homolgousl chromosomes takes palce
Crossing over leads to genetic recombination.

Question # 2

Difference between Diploid cells and Haploid cells

Ans 1: Diploidmeans cells have full number of chromosomes
Somatic cells are diploid (2n) cells.
These are responsible for growht and maintenance of the organismsm
These are producred by meiosis.
Diploid number of chromosomes in man in 46
Ans 2: Haploid Cells:
Haploid means cells having half number of chromosomes
Germ line cells are haploid (n) cells.
These are involved in sexual reproduction.
Theser are proeuced by mitosis
The haploid number of chromosomes in man is 23

Question # 3

What is the function of the centrosome during cell division.

Ans 1: During cell division the centrosome of cell duplicates into two these wo centrosomes migrate to the opposite side of the nucleus and make netwrok of microtubules called spindle fibres These spidle fibre ensure accurate separation of chromosomes.

Question # 4

Difference between Cytokinesis and Karyokinesis.

Ans 1: Cytokineis:
The process of cytoplasmic division to called cytokinesis
Ans 2: Karyokinesis:
The process of nuclear division is called karyokinesis

Question # 5

Difference between Centromeres and Centrioles

Ans 1: Centromeres:
The centromere is a constriction in chromosome, where chromatids are joind with eachother.
Ans 2: Centrioles:
a pair of centrioles locatd near the anterior surface of the nucleus. It consist of triple of microtublues arrange dto form a hollow cylinder.

Question # 6

What is M-Phase

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

Question # 7

Difference between Chromatin and Chromosome

Ans 1: Chromatin
In the beginning of prophase. The chromosome 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 condensation. It results in the appearence of chromosmes.

Question # 8

What is the role of spindle fibres in mitosis.

Ans 1: During mitosis, spindle fibres ensure the accurate separation of sister chromatids of chromosoemes attache dwith spindle fibres in telephase.

Question # 9

What are sister chromatides, and when do they separate in meiosis.

Ans 1: Sister chromatide are identical copies of a single chromosomess. These sister chromatides are separated during anaphase -II of mciosis.

Question # 10

Enlist the events that occur during the G1 Phase of interphase.

Ans 1: During G1 phase of interphase followign events occur.
i. Cell makes proteins and organelles and so grow in size.
ii. Cell also makes enzymes required in S-phase for replication of DNA.

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Matric Part 1/9th Class Biology Chapter 4 Short Questions Test With Answer for Chapter 4 (Cells and Tissues)

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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 the differecne between prophase of mitosis and prophase -I of meiosis-I.

Difference between Diploid cells and Haploid cells

What is the function of the centrosome during cell division.

Difference between Cytokinesis and Karyokinesis.

Difference between Centromeres and Centrioles

What is M-Phase

Difference between Chromatin and Chromosome

What is the role of spindle fibres in mitosis.

What are sister chromatides, and when do they separate in meiosis.

Enlist the events that occur during the G1 Phase of interphase.

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

Set 1

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

What is the differecne between prophase of mitosis and prophase -I of meiosis-I.

Difference between Diploid cells and Haploid cells

What is the function of the centrosome during cell division.

Difference between Cytokinesis and Karyokinesis.

Difference between Centromeres and Centrioles

What is M-Phase

Difference between Chromatin and Chromosome

What is the role of spindle fibres in mitosis.

What are sister chromatides, and when do they separate in meiosis.

Enlist the events that occur during the G1 Phase of interphase.

9th Biology Urdu Medium Chapter 4 Preperation

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