NCERT Class 11 Chapter 10 Biology Cell Cycle and Cell Division MCQ

NCERT Class 11 Chapter 10 Biology Cell Cycle and Cell Division MCQ | Questions & Answers: Do you guys wish to take an online quiz with regards to the NCERT Class 11 Chapter 10 Biology Cell Cycle and Cell Division Concept? then here is an article that can help you. Take up the quiz and know how well aware you are about the Cell Cycle and Cell Division concept.

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1. Chromosome duplication without nuclear division refers to

A. mitosis

B. endomitosis

C. meiosis

D. androgenesis

2. During which stages (or prophase I substages) of meiosis do you expect to find the bivalents and DNA replication respectively?

A. Zygotene and S phase (of interphase prior to prophase I)

B. Both

C. Pachytene and interphase (just prior to prophase I)

D. None of these

3. The two chromatids of a metaphase chromosome represent

A. replicated chromosomes to be separated at anaphase

B. homologous chromosomes of a diploid set

C. non-homologous chromosomes joined at the centromere

D. maternal and paternal chromosomes joined at the centromere

4. Recombination of genes occur at

A. prophase I in meiosis

B. prophase II in meiosis

C. metaphase II in meiosis

D. prophase in mitosis

5. Four daughter cells formed after meiosis are

A. genetically different

B. multinucleate

C. genetically similar

D. anucleate

6. In animal cells, cytokinesis involves

A. the contraction of the contractile ring of microfilament

B. depolymerization of kinetochore microtubules

C. a protein kinase that phosphorylates other enzymes

D. the separation of sister chromatids

7. The number of chromatids in a chromosome at anaphase is

A. 1 in mitosis and 2 in meiosis

B. 2 each in mitosis and meiosis

C. 2 in mitosis and 4 in meiosis

D. 2 in mitosis and 1 in meiosis

8. During cell division, sometimes there will be failure of separation of sister chromatids. This event is called

A. non-disjunction

B. coincidence

C. complementation

D. interference

9. In which stage of the cell cycle histone proteins synthesized in a eukaryotic cell?

A. During S-phase

B. During entire prophase

C. During telophase

D. During G₂ stage of prophase

10. What is true about telophase stage?

A. All of these

B. Nuclear envelope, nucleolus, Golgi complex and ER reform

C. Chromosomes cluster at opposite spindle poles

D. Chromosomes lose their identity as discrete elements

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11. The centromere is situated close to its ends and forming one extremely short and one very long arm in

A. Acrocentric chromosome

B. Telocentric chromosome

C. Sub-metacentric chromosome

D. Metacentric chromosome

12. The stage between two meiotic divisions is called interkinesis and

A. Is generally short-lived and followed by prophase II

B. Involves duplication of genes and centrioles

C. Is followed by prophase I

D. Is long lived

13. Which is correct w.r.t. anaphase?

A. Centromeres split and chromatids separate

B. Chromosomes are moved to spindle equator

C. Chromatid splits by recombinase activity

D. None of these

14. Which one of the following events is incorrect for cell cycle?

A. All events are under genetic control

B. Maximum cell growth occurs in M-phase

C. DNA synthesis occurs only during one specific

D. Centriole duplication occurs in S-phase

15. The sequence of events by which a cell duplicates its genome, synthesises other constituents of the cell and eventually divide into two daughter cell is termed as

A. M-phase

B. Karyochorists

C. Cell cycle

D. None of these

16. Lampbrush chromosomes are seen in which typical stage?

A. Meiotic prophase

B. Mitotic prophase

C. Mitotic anaphase

D. Mitotic metaphase

17. In telophase of mitosis, the mitotic spindle breaks down and nuclear membranes form. This is essentially the opposite of what happens in

A. prophase.

B. metaphase.

C. interphase.

D. None of these

18. Which of the following carry the same genetic information?

A. sister chromatids

B. X and Y chromosomes

C. all autosomes

D. homologous chromosomes

19. Which of the following is true of kineto-chores?

A. All of the above

B. They are localized at the centromere of each chromosome

C. They are the sites where microtubules attach to separate the chromosomes.

D. They are organized so that there is one per sister chromatid in meiosis

20. Chromosome movement during anaphase is the result of

A. Both

B. None of these

C. the molecular motors at the kinetochores that move the chromosomes toward the poles.

D. shortening of the microtubules at the centrosome that pull the chromosomes toward the poles

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21. Programmed cell death (apoptosis)

A. is a natural process during development

B. is signaled by the initiated of mitosis

C. occurs in cells that have been deprived of essential nutrients.

D. None of these

22. A bivalent consists of

A. two chromatids and one centromere

B. two chromatids and two centromeres

C. four chromatids and two centromeres

D. four chromatids and four centromeres

23. Nucleoproteins are synthesized in

A. nucleoplasm

B. nuclear envelope

C. nucleolus

D. cytoplasm

24. Segregation of Mendelian factor (Aa) occurs during

A. diplotene

B. anaphase-I

C. zygotene/pachytene

D. anaphase-II

25. Hammerling’s experiments of Acetabularia involved exchanging

A. cytoplasm

B. nucleus

C. rhizoid and stalk

D. gametes