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M.R. SECONDARY & HIGHER SECONDARY SCHOOL, GADHINGLAJ, BIOLOGY CET TEST- II - 2021, , Cell and Cell Division, STD- XI DATE- /12/2021.— TIME- 1.00 Hr., , , , , 1. An organelle devoid of membrane covering is...., a) vacuole b) ribosome ¢) peroxisome d) lysosome, , 2. Membranous extension in blue green algae are known as...., a) phytochrome b) chromatophore c) mesosome d) pneumatophore, , 3. Which of the following is INCORRECT ?, a) Mycoplsama is the smallest cell, , b) Bacteria are 3 to 5 um in size, , c) The largest cell is the egg of an ostrich, , d) nerve cells are some of the smallest cells, , 4, Integral proteins of cell membrane occur on / in..., a) inner surfaces b) outer surfaces c) phospholipid matrix d) inner and outer surfaces, , 5. The lipid component of the membrane mainly consists of ....., a) polysacchrides _b) phosphoglyceride ¢) monsosachhrides d) both a & c, , 6. Lysosomes contain...., a) carbohydrates b) hormones c) nucleic acids d) hydrolases, , 7. Plastids storing fat are called..., a) Elaioplasts b) Sphareosomes c) Aleuroplasts d) Pyrenoids, , 8, Chromosomes having equal or almost equal arms are called....., a) metacentric b) acrocentric ¢) polycentric d) acentric, , 9. Which of the following in NOT the function of cell wall ?, , i) Provides shape to the cell ii) Protects the cell from mechanical damage and infection, iii) Helps in cell to cell interaction iv) Provides barrier to undesirable macromolecules., a) Only (i) b) Only (iv) c) Only (ii), (iii) and (iv) d) None of the above

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10. Which of the following pair are correctly matched ?, L Microtubules - Structural components of cilia, II. Centrioles - Store hydrolytic enzymes, Il. Amyolplasts - Store oil protein and starch in plants, a) I, Mand 1 b) Tand TI c) Tonly d) Tand TI, , 11. Which of the following terms is NOT correctly matched with its feature ?, a) Osmosis - Movement of water by diffusion., b) Nucleoplasm - Site of active synthesis of ribosomal RNA., c) Mesosome - In folding of Cell membrane and characteristics of eukaryotes., d) Pili - Elongated tubular surface structures (made of special protein) of bacteria, , 12.Microtubules are absent in .., a) Mitochondria b) centriole c) flagella d) spindle fibres, , 13.The main organelle involved in modification and routing of newly synthesized, proteins to their destination is..., a) Chloroplast b) Mitochondria c) Lysosome d) Endoplasmic reticulum, , 14, Select one which is not true for ribosomes .., a) Made of two sub units b) Form polysome, c) May attach to MRNA d) have no role in proteins synthesis, , 15. Who proposed the fluid mosaic model of plasma membrane ?, a) Camillo Golgi b) Schleiden and Schwann, c) Singer and Nicolson d) Robert Brown, , 16.Which of the following options is true for a secretory cell ?, a) Golgi apparatus is absent b) RER is easily observed in the cell, c) Only SER is present d) Secretory granules are formed in nucleus., , 17. What is a tonoplast ?, , a) Outer membrane of mitochondria, , b) Inner membrane of Choloroplast, , c) Membrane boundary of the vacuole of plant cells, , d) Cell membrane of a plant cell, , 18. Plastids differ from mitochondria on the basis of which of the following feature ?, a) Presence of two layers of membrane b) Presence of Ribosomes, , c) Presence of thylakoids d) Presence of DNA

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19. Which of the following cell organelles is responsible for extracting energy from, carbohydrate to form ATP ?, a) Ribosome b) Choloroplast c) Mitochondrion d) Lysosome, , 20. Which of the following is true for nucleolus ?, a) Larger nucleoli are present in dividing cells b) It is a membrane bound structure, c) It is a site for active ribosomal RNA synthesis —d) It takes part in spindle formation, , 21. Meiosis in diploid organisms results in ..., a) production of gametes b) reduction in the number of chromosomes, ¢) introduction of variation d) All of the above, , 22. Meiosis occurs in organisms during ...., a) sexual reproduction b) vegetative reproduction c)Botha&b_ d) None of these, , 23.Mitosis is characterized by..., a) reduction division b) equal division, c) Botha &b d) pairing of homologous chromosomes, , 24. A bivalent meiosis - I 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, , 25. Cells which are not dividing are likely is not observed during mitosis ..., a) G; b) Go c) Go d) S - phase, , 26. Select one correct statement about G, phase, a) Cell is metabolically inactive b) DNA in the cell does not replicate, ¢) it is not a phase of synthesis of macromolecules d) Cell stops growing, , 27. The enzyme recombinase is required at which stage of meiosis ?, a) Pachytene b) Zygotene c) Diplotene d) Diakinesis, , 28. During which phase (s) of cell cycle, amount of DNA in a cell remains at 4C level, if the initial amount is denoted as 2C ?, , a) Gp and G; b) G; and S c) Only Gz d) G2 andM, , 29.During meiosis I, the chromosomes start paring at, , a) Leptotene b) Zygotene c) Pachytene d) Diplotene

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30. In Meiosis crossing over is initiated at ....., a) Pachytene b) Leptotene c) Zygotene d) Diplotene, , 31. How many mitotic divisions are needed for a single cell to make 128 cells ?, a)7 b) 14 ¢) 28 d) 64, , 32. DNA replication in bacteria occurs..., a) within nucleolus b) Prior to fission, c) Just before transcription d) During S Phase, , 33. The stage during which separation of the paired homologous chromosomes, begins is..., a) Pachytene b) Diplotene c) Zygotene d) Diakinesis, , 34. Cell division cannot be stopped in which phase of the cell cycle ?, a) G,- phase b) G)- phase c) S- phase d) Prophase, , 35. An egg cell has 5 pico gram of DNA in its nucleus. How much amount of DNA, will be at the end of G:- phase of mitosis ?, a) 2.5 pico gram b) 5 pico gram e)5g d) 20 pico gram, , 36. Which of the following serves as mitotic spindle poison ?, a) Ca** b) Mg” c) Tubulin d) Colchicine, , 37. Condensation of chromosomes occurs in...., a) Prophase - I b) Prophase - IL c) anaphase d) metaphase, , 38. The number of chromosome groups at the equatorial plate in metaphase - I of, meiosis in a plant with 2n = 50 shall be...., a) 50 b) 25 c) 30 d) 100, , 39, If for a species 2n = 16, then during Ist prophase and IInd prophase of meiotic, division of a cell, how many tetrads and diads will be formed...., , a) 4and8 b) 8 and4 c) 8 and 8 d) 4and8, , 40. Which of the following statements (events) is / are correct for meiotic telophse ?, , a) Arrival of chromosomes cluster at opposite poles and loss of their identity as, discrete elements, , b) nuclear membrane assembles around each chromosomes clusters, , ¢) nucleolus, GB and ER form d) All of the above