9th Class Biology Chapter 5 Cell Cycle MCQs, Solved Exercise Notes

The Matriculation students are searching for 9th Class Biology Chapter 5 Cell Cycle MCQs, Solved Exercise Notes. These students usually focuses on textbook exercise and pre-prepared notes by the teachers. 

But, we always advise our students to do smart work. In this scenario, students are advised to study from the board exam past papers. They will see the pattern of examiner. 

After reviewing board papers, we came to know that huge amount of questions repeats every year. 

Therefore, We have prepared most repeated MCQs questions notes of 9th Class Biology Chapter Five Cell Cycle from the past papers. These notes will help students in improving their marks in upcoming examination.

9th Class Biology Chapter 5 Cell Cycle MCQs with Answers

We are starting our blog post with a most important section which is Multiple Choice Questions (MCQs). 

Students will get Class 9 Biology Chapter 5 Cell Cycle MCQs with Answers from the Sindh Board Textbook Exercise. 

Students can also read the most repeated 9th class Biology MCQs of  Chapter 5 "Cell Cycle" from the Board Exam Past Papers.

01. Which processes involve mitosis?

(a) Growth, reduction division, and asexual reproduction

(b) Growth, repair, and asexual reproduction ✓

(c) Growth, repair, and semi-conservative replication

(d) Growth, reduction division and repair

02. Who first proposed the important biological theory that "all cells originate from cells"?

a) Theodor Shawn

b) Rudolf Virchow ✓

c) Charles Darwin

d) Alexander Fleming

03. What occurs in the metaphase of mitosis?

(a) Chromosome line up on the equator of the cell ✓

(b) Chromatids reach the poles of the spindle

(c) Chromatids separate and move to opposite poles

(d) Chromosomes start to coil up and become visible

04. The series of events from the time a cell is produced until it completes mitosis and produces new cells called

a) Mitosis

b) Meiosis

c) Cell cycle ✓

d) Interphase

05. Which process occurs during the prophase of mitosis in an animal cell?

(a) Division of centromeres

(b) Formation of chromosomes ✓

(c) Replication of DNA

(d) Separation of centrioles

06. Cell cycle consists of phases

a) 3

b) 4

c) 5

d) 2 ✓

07. Sequence of physiological changes via which cells commit suicide.

(a) Apoptosis

(b) Necrosis

(c) Autophagy

(d) Both Apoptosis and Autophagy ✓

08. Which phase is relatively a short period of the life cycle

a) S-phase

b) G1-phase

c) Mitotic phase ✓

d) G2-phase 

09. Choose the Incorrect statement regarding meiosis.

(a) Takes place in germ cells to produce gametes

(b) Production of new somatic cells from germ cells ✓

(c) Maintain chromosome number from generation to generation

(d) Reduces the diploid number of chromosomes to half

10. The time during which a cell performs extremely high functions and its metabolic activity is very high

a) Mitotic phase

b) Interphase ✓

c) S phase

d) All of the above

11. A kind of cell division where the mother cell of the spores produces the spores

(a) Amitosis

(b) Mitosis

(c) Meiosis ✓

(d) Both Amitosis and Meiosis

12. Which phase is the longest phase of the cell cycle

a) G1-phase ✓

b) G2-phase

c) S-phase

d) Interphase

13. Stage of mitosis in which chromatids reach the poles and their migration pauses.

(a) Prophase

(b) Metaphase

(c) Anaphase

(d) Telophase ✓

14. Which phase is the synthesis phase

a) S-phase ✓

b) G1-phase

c) G2-phase

d) Interphase

15. A phenomenon where a homologous pair of chromosomes is unable to split apart is known as:

(a) Non-disjunction ✓

(b) Personalization

(c) Synapsis

(d) Linkage

16. What is the lifespan of White Blood Cells (WBCs)

a) Almost 12 days

b) Almost 5 days

c) 13 to 20 days ✓

d) 5 to 12 days

17. In 1882, the term 'chromosomes' was given by a German embryologist:

(a) Walter Fleming ✓

(b) Leeuwenhoek

(c) Carolus Linnaeus

(d) Ernst Hackle

18. Sea star regenerates its lost arm through ______

a) Mitosis ✓

b) Meiosis

c) Cell replacement

d) All of these

19. Chromosomes contain heredity units called:

(a) Chitin

(b) Diplotene

(c) Genes ✓

(d) Apoptosis

20. What is the phenomena mean “spreading of disease”

a) Metaphase

b) Cancerous

c) Metastasis ✓

d) Regeneration

21. A chromosome has:

(a) two parts ✓

(b) three parts

(c) four parts

(d) five parts

22. The abnormal growth of cells called

a) Tumors ✓

b) Benign tumor

c) Metastasis

d) All of these

23. The chromosomes are of different types, depending upon:

(a) shape of chromosomes

(b) size of chromosomes

(c) length of its arms

(d) position of centromere ✓

24. Chromosomes with unequal arms are known as:

(a) sub-meta centric ✓

(b) metacentric

(c) sub-telocentric

(d) telocentric

25. In meiosis, the chromosomes are not in the form of pairs

a) Haploid ✓

b) Diploid

c) Triplet

d) None of the above

26. Location of centromere at the end of chromosomes.

(a) sub-meta centric

(b) metacentric

(c) sub-telocentric

(d) telocentric ✓

27. Homologous chromosomes' two non-sister chromatids bind to one another at specific locations along their length. These attachment sites are known as: 

a) Centrosome

b) Chiasmata ✓

c) Sister chromatids

d) All of these

28. Chromatin fiber is made of:

(a) chromatids

(b) nucleosomes ✓

(c) chromatin

(d) diplotene

Biology Class 9 Chapter 5 CELL CYCLE PDF Notes & Questions Answers from Sindh Board Textbook

Are you searching for class 9 biology chapter 5 Cell Cycle PDF Notes from the Sindh Board Textbook?

If yes, then you will be happy to know that today we are going to share Class 9 Biology Chapter 5 Cell Cycle Notes in PDF here.

Biology Class 9 Chapter 5 Cell Cycle Textbook Exercise comprises Short and Detailed Question Answers. 

Therefore, We have divided this post into two parts. 

Part:01. Short Question Answers

Part:02. Detailed Question Answers

Students can read 9th class biology Chapter 5 Cell Cycle Short and Long Question Answers from Sindh Board Textbook and can also download it in PDF.

All Questions and Answers of 9th class Biology from Sindh Board in PDF can be downloaded from here.

Biology Class 9 Chapter 5 Cell Cycle Short Questions with Answers from Sindh Textbook Exercise

We are starting this section of the post with Biology Class 9 Chapter 5 Cell Cycle Short Questions with Answers from the Sindh Textbook Exercise.

Q.01: Define Cell Cycle.

Ans: "The term "cell cycle" refers to the sequence of events that occur from the moment a cell is created until it completes mitosis and divides into new cells."

The major phases of Cell Cycles are: 

• Interphase
• Metaphase

Q.02: Define Interphase.

Ans: "A cell's high metabolic activity during interphase is caused by it carrying out a variety of tasks."

It is divided into three phases: 

• G1 Phase (First Gap) 
• S - Phase (Synthesis Phase) 
• G2 Phase (Second Gap) 

Q.03: What happens in the absence of meiosis?

Ans: The number of chromosomes would have doubled in the absence of meiosis, resulting in aberrant growth, alterations in species traits, and possibly even death.

Q.04: What are chromatids or sister chromatids?

Ans: Each chromosome has two genetically identical copies of a thread connected at the start of cell division; these copies are known as chromatids or sister chromatids.

Q.05: What do you mean by Meiotic error OR Explain the phenomenon of non-disjunction?

Ans: During meiosis I, homologous pairs of chromosomes split into two gametes. However, during non-disjunction, a pair fails to separate, resulting in gametes with an abnormal number of chromosomes. These abnormal gametes fuse with normal gametes, creating a zygote with an abnormal number of chromosomes. This phenomenon is referred to as non-disjunction.

Biology Class 9 Chapter 5 Cell Cycle Detailed Questions with Answers from Sindh Textbook Exercise

The candidates who are studying in Class 9 and preparing for their upcoming examinations, are advised to solve complete textbook exercise questions. 

Here are the Biology Class 9 Chapter 5 Cell Cycle Detailed Questions with Answers from the Sindh Textbook Exercise.

Q.01: Describe the significance of Mitosis and Errors in Mitosis.

Ans: The main purpose of mitosis is growth of cell and in this process cell divides into two identical cells. 

Errors in mitosis can lead to the changes in DNA.

Other questions will also be provided to the students.