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BIOLOGY PAPER

6 pages, 98 questions, 98 questions with responses, 151 total responses,

Sahil Meher
St. Anne's Convent School (SACS), Sonepur, Subarnapur

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ASSQCIATION QS QDTST{A.C.HT{ATTISGARH ICSE SCHOOLS TCSA MODEL EXAMINATTON _ 2OI5 BIOLCIGY (Science Paper-3) (Two Hours) Answers ta this Paper must be'written on tfte paper provided ,separately. You will nct be allowed to write dwring the -first 15 minutes. This time i,r to be spent in reading lhe question paper. Tke time giv-en ut the head of this Paper is the time allowed for writinz the answer,s' Attempts all questions Jront Section - I and anyfour questions from Section The intended ntarks.for ions or stions are given in brackets. - IL SECTION-I (40 Marks) (Attempt all questions from this section) Ouestion-1 Name the following : The membrane that sumounds the fbetus.. Knot-like mass of blood capillaries inside the Bowman's capsule of a nephron" l;,', iii) A foreign body thai induces the formation of antibodies in the body.7,. .,. iv) The stage at which centromeres split in mitosis. v) A gene that expresses in homozygous as well as in heterozygous conditron. b) State the main function of the following I Pupil Semicircular canals. iii) Seminiferous tubules. iv) Chordae tendinae. v) Neurotransmitters. c) Copy and complete the following by filling in the blanks 1 to 5 with Appropriate rvords. a) i) ii) [5 {l' i) ii) Is Is Water enters the root hair from the soil by the process of (1). U la g'y7ta ot't4 This is because the solution in thc soil is _(2) Where as the cell 'Sap in root hair (3). cell is The water then passes through lhe the (4) cells by cell to cell ' (5) and reaches the Xylem of the root. d) Given below are f,rve sets with four terms each. In each set one term Is odd and can not be grouped in the same category to r.vhich the other three belong. Identify the odd one in each set and name the Category to which the remaining three belong. Is i) Malleus, pinna, incus, stapes, ii) Blinking, ifuitting without looking, Srniling, Blushing. iii) Cresol, DDT, Mercurochromee Bordeaux Mixture. LC.S.E. Model Exam 2015 Biology Page 7 of$ iv) B asophi l, N eutrophi v) e) bl l, Eo s inophi l, L:!qpbqcf4-. ACTH, TSH,4DH, FSH Given below a diagrammatic display of certain parts of an organ, Srudy' the diagram and the questions that fbllow, i) Where will you find this structure, What is thc common Rame of Part labeled 1,2, & 3. iii) Mention the function of part labeled 3, iv) Namc the part iabeled 4. v) Mention the funetion of part labeled 4, ii) ; ( q u 0 , Matoh the items given in column -A with the most appropriate ones in Column-B and re-Write the correct matching pairs from column -A And eolumn *8. Sl.No Column-A Dendrons Acrosome 1) 2) 3) 4) 5) Genes Iris Ovulation sl. No, is eolumn-B a) b) c) d) Leuteinizing Hormone Oxytocin Bearers of heredity Hereditary Units'l i e) Sperm-.: 0 Accommodation Color of the eye ': Nerve impulse ; s) h) s) Choose the correct answer from the options given below: i) The pollutant Which causes acid rain COz C) -B) SO2 Smoke A) Is D) Mercury ii) The Chief function of lymph nodes in mammals is to A) Produces WBCs B) Produce hormones C) Destroys old RBCs D)--Produces antibodies iii) A point of contact between two neurons is termed: A) Neuromotorjunction B) Synapse p) Synapsis D) Node of Ranvier LI LC.S.E. Model Exam 201, Biology Page 2 of6 iv) Pulse wave is mainly Caused by the A) Systole of atria B) Diastole of atria effistole of left ventricle D) v) Systole of the right ventricle The! observable character which is genetieally eontrolled is ealled Genotype Allcle C) Heterozygous Phenotype B) D) A b) State Is tre exact location of the following: i) iii) v) Grana Prostate gland Yellow spot ii) iv) organ of corti Thyroid gland f li lt SECTION-II (40Marks) (Attempt any FOUR questions from this section) il I I 7 Ouertioo-2 0 (hE bdm'is a diagram of the L.S. of a testis of a man. Study the Same and answer the Fitthbllon': f t5 I ib a) Label the parts numbered I to 4, of part labeled I &.2. Draw a labelled diagram of a sperm. ii) State the functions iii) b) Differentiate between the following pairs on the basis of what is Mentioned within brackets. Is and Tubectomy (parrs cut & ligated) i) Vasectomy ii) WBC and RBC (Structure) iii) Homozygous and Heterozygous (definition) iv) Disinfectant and antiseptic (OeRnitionl v) Stomata and Hydathodes (location LC.S.E, Model Exam 20Iq Biology Page 3 of 6 I Orrestion-3 t"-- I a) The diagram below represents a stage dr-uing cell division. study the Same and answer the questions that follow: I i) Name the parts labeled 1,2, &. 3. ii) identify the above stage and give a reason to support your answer. iii) Mention where in the body this type of cell divisions occur ? iv) Name the stage prior to this type of cell division and how it differs from the above stage. v). How many daughter cells are produced at the end of mitosis and meiosis. b) A pure pea plant with Axial flowers and round seeds (AARR) was Crossed with Terminal flowers and wrinkled seeds (aarr). i) Mention the genotype and phenotypes of F1 generation. ii) Name the phenotypes of F2'generation. iii) Name the Mendel's law that is derived from this cross and give the clihybrid ratio. iv) Name tv,'o x-linked diseases found in man. a) The diagram given below represents a defect of vision of the human eye. i) Name the defect. ii) What is the effect of this defect on man? iii) Mention two causes for this defect. iv) How can this defect be rectified? v) what is the nature of image that falls on the retina of a normal eye? vi) Draw aneat labeled diagram to show how this defect can be rectified. LC.S.E. Model Exam 2015 Biology Page 4 af 6 b) complete the following tabre by filring in the branks Hormone Secrcted Thyroid srimutatine numbered lro 10. Effect on bod Regulates Basat Metaloiism In-creases hear tteat h;m;ne lau_ses Milk eiection Ouestion-5 a) The diagram given below represents a structure answer the questions that follow. - found in a leaf. study the same and Is i) Name the parts labelled A & B. ii) What is the biological term for the above structure iii) Wtrat is tfe F;nction of the part labeled A ? I'i N'J:1X1il:jffi?;_,?"ffi:'of A, which Herp in the tunction mentioned in (iii) above. vi) How transpiration ls trelpful to the plan body b) ? ? Answer rhe following briefly : Mention two reasons foipopuration exprosion [5 in India. . carbon monoxide 1co) is more harmful than Curuon dioxide (coz) for Yhv human hearth .garbage, iii) What is meant by the term ? ir') Expand the following abbreiiations. 1 - ACTH 2 - NADP v) Mention a significant difference between active immunity and passive immunity. Question-6 i) ii) a) i) Draw a labeled diagram of the experimental set up to show that green prants give out oxygen during photosynthesis. I.C.S.E. ModelExai nt| B,."/"ry Page 5 of 6 ii) iii) Give the overall baiansed chcmieal_equation to represedt the proeess of photoeynthesis, What do you mea.n by photolysis sf water ? b) frive thc technical termg fsr the fullowing ; ts i) The period of intraeuterine develspment of the embryo, The strueture that joins the middle ear with tluoat, iii) Thc nerve that transmits nervc impulse from eye to brain. iv) The stnreture of the car that maintains,statip balanee of the bedy, v) The three layered eovering of the brain, vi) The hydrostatie pressure exerfed by eell EontcRts sn the eell wail, vii) 'Ihe ssicntifie study of human popularion, viii) The filtration of blood und*r high pressure in malpighian capsule of a nephron. ix) The sound produeed by the lieart duc to closure of valves during ventricuiar systole, Eheet of fibre sonneeting two eercbral hemispheres. ii) x) Ouc5lion-? " a) The flgure given below are eross sestion sf bloqd vessels, Study the figure and ari;wer phe fcllowing questions. ts i) b) Identify the blood vessels A & B. iD Name the parts labeled I to 4. iii) Mention two strustural differenees betwcen A & B. iv) Name fhe type of blsod that Flows 1 * through A and 2 -_ through B i) Give the biological reasons for the follo, ing statements, Gametes have a haploid number of chromosomes" ii) The hand automatically shows the direction to turn a cycle without thinking. iii) One should reduce the use of chemicals containing chlorofluorocarbons. Explain the following terrns. D Allele ii) Antibiotie i) ts 2) ------*x------ LC,S.E, Model Exam 2015, Biology Page 6 of 6

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