Class 11- Biology-chapter 10-Cell Cycle and Cell Division InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. Which of the following is true for an animal, with a diploid number of chromosomes equal to 30? Produce four gametes with 15 chromosomes each during meiosis Not be able to undergo meiosis because gametes would end up with an odd number of chromosomes Produce four gametes with 30 chromosomes each during meiosis Produce two gametes with 30 chromosomes each during meiosis None 2. Beads on string of A are seen in B which condense to form chromosomes in C stage of cell division. A-Chromatin B- Metaphase C- Metaphase A- Chromonema B- Chromosome C- Anaphase A- Chromonema B- Chromatin C- Metaphase A- Chromonema B- Chromatid C- Anaphase None 3. A diploid cell in human, where cell division does not occur:(a) Heart cell(b) Muscle cell(c) Nerve cell Only c a and c a, b and c b and c None 4. Choose the incorrect match w.r.t mitosis. Telophase - Final stage of mitotic karyokinesis Anaphase - Poleward movement of chromatids Prophase - Shortest phase Metaphase - Study of morphology of chromosome None 5. The movement of chromosomes to the opposite poles during cell division takes place When the centrioles replicate Immediately following DNA replication After the nuclear membrane disintegrates Immediately after the centromere splits None 6. The presence of checkpoint during mitosis ensures the attachment of all chromosomal kinetochore proteins to the spindle fibres. The absence of attachment of kinetochore proteins produces a signal preventing mitosis to proceed to next stage. The occurrence of this check point is responsible for transition from Prophase to metaphase Metaphase to telophase Metaphase to anaphase Anaphase to telophase None 7. Which one of the followings is wrong for meiosis ? It occurs in diploid cell It occurs in haploid cell It leads to formation of sister chromatids It occurs by splitting of centromeres and separation of sister chromatids None 8. Congression is a phenomenon of Separation of paired chromosomes Bringing the chromosomes on equator of spindle apparatus Pairing of homologous chromosomes Movement of sister chromatids towards the poles None 9. The formation of multinucleated cell, with identical genetic information takes place by going through Multiple rounds of the cell cycle, but no rounds of mitosis Multiple rounds of mitosis, but no cytokinesis Multiple rounds of cytokinesis, but no rounds of mitosis Multiple rounds of the M phase, but no rounds of the S phase None 10. The correct sequence of different phases of mitosis is Metaphase → → Anaphase → → Telophase → → Prophase Anaphase → → Metaphase → → Prophase → →Telophase → →Interphase Interphase → → Prophase → → Metaphase → → Anaphase → → Telophase Interphase → → Telophase → → Metaphase → → Anaphase → → Prophase None 11. Starting with microspore mother cells, what is the least number of meiotic and mitotic divisions needed for the formation of 500 male gametes in an angiosperm? 63 and 500 65 and 500 63 and 252 63 and 504 None 12. The centromere does not divide till the end of metaphase. This is important because centromere Produce spindle fibers contains genes that control prophase and metaphase Hold the replicated DNA's together Is connected with nuclear envelope None 13. Nuclear membrane is formed around the groups of daughter chromosomes during the telophase by Euchromatin Golgi apparatus Endoplasmic reticulum Heterochromatin None 14. What are spindle fibers that connect the centromere to respective poles called? Interphase fibers Astral rays Interchromosomal fibers Chromosomal fibers None 15. Identify the correct combination regarding anaphase, anaphase I and anaphase II. Anaphase - centromere splits, Anaphase I - homologous chromosomes separate, Anaphase II - centromere splits Anaphase - chromosomes move to one pole, Anaphase I - homdlogous chromosomes separate, Anaphase II - centromere splits. Anaphase - chromatids move to opposite poles, Anaphase I - homologous chromosomes separate, Anaphase II - centromere splits Anaphase - chromosomes cluster at opposite poles, Anaphase homologous chromosomes separate, Anaphase II - centromere splits None 16. Which one of the following precedes re-formation of the nuclear envelope during M-phase of the cell cycle? Formation of the contractile ring and formation of the phragmoplast Transcription from chromosome and reassembly of the nuclear lamina Decondensation from chromosome and reassembly of the nuclear lamina Formation of the contractile ring and transcription from chromosomes None 17. There are 42 chromosomes in a cell. After a particular phase of mitosis, the number of chromosomes remain same. Name the phase.I. AnaphaseII. MetaphaseIII. ProphaseIV. Telophase II and III I and IV II and IV I, II, and III None 18. Which is not characteristic of telophase1. Chromatin condenses to form chromosomes.2. Nucleolus, Golgi complex and ER reform. 3. Nuclear envelopes assemble around chromosome clusters. 4. Centromeres split, and chromatids separate.5. Chromosome clusters and their identity is lost. 3, 4 and 5 2 and 3 1, 2 and 4 1 and 4 None 19. The process of crossing over between homologous chromosomes that takes place during meiosis is advantageous because it Makes for healthy offspring Allows gametes to have half the number of chromosomes Provides a source of genetic variation Creates a random mix of chromosomes None 20. The two chromatids of a metaphase chromosome represent Maternal and paternal chromosomes joined at the centromere Non-homologous chromosomes joined at the centromere Replicated chromosomes to be separated at anaphase Homologous chromosome of a diploid set None Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.