16 ôV’≤<äsêu≤<é 34. Identify the two correct statements with reference to meiosis I. Bead like structure are absent on chromosomes. II. Displacement of chiasmata occurs in diakinesis. III. Separation of two basic sets of chromosomes. IV. No division of centromere. The correct statements are A) III, IV B) II, IV C) II, III D) I, III 35. Match the following List-I List-II (A) Initiation of spindle fibres (B) Synthesis of RNA and Protein (C) Action of endonuclease (D) Movement of chromatids towards opposite pole , 16 2016 (I) Anaphase - I (II) Zygotene (III) G1 phase (IV) Pachytene (V) Anaphase - II A) A - I, B - III, C - V, D – IV B) A - III, B - II, C - I, D - V C) A - II, B - III, C - IV, D – V D) A - V, B - III, C - I, D – II Ribosomal RNA is actively synthesized in.. CYTOLOGY AND CELL DIVISION 1. Arrange the following events of meiosis in the correct sequence I. Terminalization II. Crossing over III. Synapsis IV. Disjunction of genomes The correct sequences is A) II, I, IV, III B) III, II, I, IV C) IV, III, II, I D) I, IV, III, II 2. A bivalent consists of I. Two chromatids and one centromere II. Four chromatids and two centromeres III. Two chromatids and two centromeres IV. Four chromatids and four centromeres Select the correct answer from the codes given below A) Only I B) Only II C) Only III D) All the above 3. Chromosomes can be counted best at the stage of 1) Metaphase 2) Late anaphase 3) Telophase 4) Late prophase Choose the right one from the following A) Only 1 B) 1 & 2 C) Only 4 D) 3 & 4 4. The stage in which daughter chromosomes move toward the poles of the spindle is 1) Anaphase 2) Metaphase 3) Prophase 4) Telophase Choose the right answer A) Only 1 B) 1 & 2 C) Only 4 D) 3 & 4 5. Chiasmata are first seen in I. Pachytene II. Zygotene III. Leptotene IV. Diplotene Choose the correct answer A) Only I B) II and III C) Only IV D) I, II, III and IV 6. Plasma membrane is made up of 1) Protein, lipid, carbohydrate 2) Lipid, carbohydrate 3) Protein, lipid and glucose 4) Protein and cellulose Choose the right answer using above options A) Only 1 B) 1 and 2 C) Only 2 D) 1 and 4 7. Which of the following cellular structures always disappears during mitosis and meiosis? I. Plasma membrane II. Nucleolus and nuclear envelope III. Plastids Choose the correct answer from the above statements A) Only I B) Only II C) Only III D) I, II & III 8. The statements are related to Crossing-over 1. Recombination of linked alleles 2. Dominance of alleles 3. Segregation of alleles 4. Linkage between genes Choose the right answer from the given statements. A)Only 1 B) 1 & 2 C) Only 4 D) 3 & 4 9. Cytoplasmic division of a cell is called 1. Cell plate formation 2. Cytokinesis 3. Mitosis 4. Synapsis Choose the right answer A) Only 1 B) Only 2 C) 1 and 2 D) 3 and 4 10. DNA replication takes place during A) S – phase B) G2 - phase C) G1 – phase D) Prophase 11. During mitosis ER and nucleolus begin to disappear at I. Early prophase II. Late prophase III. Early metaphase IV. Late metaphase Choose the correct answer A) Only I B) Only II C) Only IV D) I, II, III & IV 12. Crossing over occurs in I) Pachytene II) Zygotene III) Leptotene IV) Diplotene Choose the correct answer A) Only I B) II and III C) Only IV D) I, II, III & IV TGT/ PGT/ JL/ DL SPECIAL 13. During which stage the chromosomes first become visible ? A) Anaphase B) Metaphase C) Prophase D) Telophase 14. Exchange of paternal and maternal chromosome material during cell division is 1) Crossing over 2) Bivalent formation 3) Dyad formation 4) Synapsis Choose the right answer A) Only 1 B) 1 and 2 C) 2 and 3 D) 3 and 4 15. Haploid complement of chromosome of an organism is I. Genome II. Phenotype III. Genotype IV. Genetic system Choose the correct answer A) Only I B) II and III C) Only IV D) I, II, III & IV 16. In mitosis, nuclear envelope and nucleolus disappear during A) Metaphase B) Interphase C) Prophase D) Telophase 17. Select the correct statement from the following regarding cell membrane A) Lipids are arranged in a bilayer with polar heads towards the inner part. B) Fluid mosaic model of cell membrane was proposed by Singer and Nicolson. C) Na+ and K+ ions move across cell membrane by passive transport. D) Proteins make up 60 to 70% of the cell membrane 18. What is true about ribosomes? A) These are found only in eukaryotic cells B) These are self-splicing introns of some RNAs. C) The prokaryotic ribosomes are 80S, where "S" stands for sedimentation coefficient D) These are composed of ribonucleic acid and proteins 19. Ribosomal RNA is actively synthesized in A) Nucleoplasm B) Ribosomes C) Lysosomes D) Nucleolus 20. Assertion (A): A cell membrane shows fluid behaviour. Reason (R) : A membrane is a mosaic or composite of diverse lipids and proteins. A) Both A and R are true and the R is the correct explanation of the A. B) Both A and R are true but the R is not the correct explanation of the A. C) A is true statement but R is false. D) Both A and R are false statements 21. A nucleosome is a portion of the chromonema containing A) Both DNA and histones B) only histones C) Both DNA and RNA D) only DNA 22. What is the common point of similarity between DNA and RNA? A) Both are double stranded B) Both have identical sugar molecules C) Both have identical pyrimidine bases D) Both are polymers of nucleotides 23. Cell wall consists of A) Lignin, hemi cellulose, pectin and lipid B) Lignin, hemi cellulose, pectin and cellulose C) Lignin hemi cellulose, protein and lipid D) Hemi cellulose, cellulose, tubulin and lignin 24. Cytoskeleton is made up of A) Proteinaceous filaments B) Calcium carbonate granules C) Callose deposits D) Cellulosic microfibrils 25. Vacuole in a plant cell A) Lacks membrane and contains water and excretory substances B) Is membrane-bound and contains storage proteins and lipids C) Is membrane-bound and contains water and excretory substances D) Lacks membrane and contains air 26. Assertion(A): Eukaryotic cells have the ability to adopt a variety of shapes and carry out directed movements. Reason(A): There are three principal types of protein filaments-actin filament, microtubules and intermediate filaments, which constitute the cytoskeleton. A) Both A and R are true and the R is the correct explanation of the A. B) Both A and R are true but the R is not the correct explanation of the A. C) A is true statement but R is false. D) Both A and R are false. 27. The non-sister chromatids twist around and exchange segments with each other during A) Leptotene B) Diakinesis C) Diplotene D) Pachytene 28. Synapsis occurs between 1) mRNA and ribosomes 2) A male and a female gamete 3) Two homologous chromosomes 4) Spindle fibres and centromere MAHESH MOKIRALA M.Sc, M.Ed., TS & AP SET VIVEKANANDA STUDY CIRCLE 9491 997 365 Choose the right answer from the above options A) Only 1 B) 1 and 2 C) Only 3 D) 3 and 4 29. Cells in G0 phase of cell cycle A) Exit cell cycle B) Enter cell cycle C) Suspend cell cycle D) Terminate cell cycle 30. In the somatic cell cycle A) In G1 phase DNA content is double the amount of DNA present in the original cell B) A short inter phase is followed by a long mitotic phase C) DNA replication takes place in S-phase D) G2 phase follows mitotic phase 31. Which of the following is unique to mitosis and not a part of meiosis? A) Homologous chromosomes pair and form bivalents B) Chromatids are separated during anaphase C) Homologous chromosomes behave independently D) Homologous chromosomes crossover 32. One strand of DNA has the following sequence of nucleotide 3’ ATTCGCTAT 5’ so the other strand of DNA has A) 5’ TAAGCGATA 3’ B) 3’ TAAGCGATA 5’ C) 5’ GACGCGATA 3’ D) 3’ GACGCGATA 5’. 33. Assertion(A): Phase of cell division is also known as formative phase. Reason(R): In formative phase new cells are produced from pre-existing cells through meiosis division. A) Both A and R are true and R is the correct explanation of the A. B) Both A and R are true but the R is not the correct explanations of A. C) A is true, but R is false. D) Both A and R are false. ANSWERS 1.B 7.B 13.C 19.D 25. C 31. C 2.B 8.A 14.A 20.A 26.A 32. A 3.A 9.B 15. A 21. A 27. D 33.C 4.A 10.A 16. C 22. D 28.C 34.C 5.C 11.B 17.B 23. B 29.C 35. C 6.A 12.A 18.D 24. A 30.C
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