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Sample Paper 2013 Class X Subject Biology Time: 1 hrs Total marks: 80 General Instructions The question paper is divided into two sections Section A and Section B Attempt all questions from Section A.(20 marks) For Section B follow the given instructions:There are a set of 8 questions in Section B Choose any six questions from this section. Make best use of graphs, charts, diagrams, etc for your answers. Section A (20 marks) Question 1 a)Give appropriate name / technical term /biological name for the following questions: 1. The specific structure in sperms (only) that initiates and regulates cell division. 2. The defect caused by abnormal functioning of valve connecting left auricle and left ventricle. 3. Condition when there is excess accumulation of water in the body. 4. The specific part of brain concerned with stereoscopic vision. a) Name the following :marks ] 1. The period after which a zygote is termed a morula. 2. Cells of the body that activates the lymphocytes. 3. Another name for toxoids. 4. The radius of eyeball. 5. The biological term for myocardial infarction. 6. The main nerve connecting spinal cord and stomach. [3 b) State true or false and correct the statements by altering the underlined words :1. Arachnoid is a meninges. 2. Pituitary gland weighs 0.7 g to 0.8 g. 3. Cretinism is a genetic disorder. 4. Sperms remain alive in female reproductive system for about 6-7 days. [2 marks ] www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com c) Chose the best alternative (s) and copy down the best option(s) and write down the corresponding answer. All the questions have a None of These and All of These options. :[4 marks] 1. The dimensions of the spinal cord are (length followed by thickness):a. b. c. d. 12cm-4cm 30cm-12cm 6mm-12mm 15cm- 12mm e. f. g. h. 30mm- 6mm 28mm 4mm 36mm 10mm 30mm-12m 2. The gland secreting substance that lubricates the front portion of the eye:- :a. Lacrimal b. Lachrymal c. Lachrymal d. Tear e. Both A and D f. Both C and D 3. Match the following:Column I 1. Pituitary 2. Hypothalamus 3. LTH a. b. c. d. Column II Prolactin Luteinizing hormone MSH MRH 4. a. b. c. d. Choose the wrong statement(s):Mixed nerves contain interneurons. Afferent neurons carry stimulation from receptor to C.N.S. Axon terminals are structures that secrete Acetylcholine. Midbrain is the thin walled structure that doesn t have any specific function in human beings. d) Define the following ;[2 marks] 1. Amniocentesis 2. Androgenic hormone e) Choose the odd one out and tabulate your answer in the following manner:[ 3 marks] Odd one Category of others Description of odd one 1. H2A , H2B , H3A, H4 2. Conservative , Conjugative , Semi- conservative , Dispersive 3. Mg2+ , RUBP , PPC , Carboxylase www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com f) Arrange the following in logical sequence as given in curly braces:- [ 4 marks] 1. { Increasing concentration of substances in the urine} i. Potassium chloride ii. Sodium chloride iii. Uric acid iv. Sulphuric acid v. Urea vi. Ammonia vii. Creatinine viii. Organic substances ix. Inorganic substances 2. {Order of steps to be taken for performing artificial breathing} i Draw arms upwards ii Repeat steps iii Doctor arrives iv Raise the chest v Fold victim s arms vi Chest expands vii Air is exhaled viiiThrow head back ix Lay victim on back x Sit beside the victim and hold his arms xi Air is drawn xii Press arms against ribs Section B (60 marks) Question 2 1) Observe the given figure and answer the questions that follow :[ 4 marks] www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com i Identify a,b,c,d. ii Name the major source of c. Also taxonomise c. iii Give another name for :a. Granulocytes b. Haemopiosis iv What aids the functioning of g? Which body secretes heparin? v Give the concentration of a , g and f in the blood. vi Which are the scavengers of the cells? Why are they so called? vii Which substance stains e? viiiWhat is the diameter of platelets? Mention the condition of a marked decrease In the number of thrombocytes. 2) Match the following:- ( Multiple matching) [2 marks] 1. 2. 3. 4. A Universal pigments Accessory pigments Algae Carrot B carotene carotene Carotene Chlorophyll a Chlorophyll b Chlorophyll c Chlorophyll d Chlorophyll e 3) Observe the given figure and answer the questions based on the figure that follow :[ 4 marks] www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com i Identify parts A H Give the technical names of parts labeled a to d. iii What are meiocytes? iv What is the difference between gametic meiosis and zygotic meiosis? v Give alternative names for heterotypic and homotypic meiosis. vi How is synapsis classified? vii Explain phase B viiiCan mutations occur biologically? If yes, how? If no, why? ii www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com Question 3 1. [ 5 marks] a. Study the diagram and answer question :- i Identify the organ systems. ii Label the parts a to h. iii Give function of f. iv Mention the function of a. v Explain the structure of e? vi Redraw the figure and draw and mark the structure similar to a. vii What is the functioning of g? b. Fill in the blanks :i Cowper s gland is known as ____________. ii Seminal vesicles are a pair of ________, ____________ , _________ or _____________ pouches found in males. iii The shape of Prostate gland is ____________. iv Testis contains ________ to _________ lobules. 2. Answer the following :[ 2 marks] a. Where are the different areas of taste in a tongue? b. Explain the process of perception of smell. 3. Insert correct word(s) in its appropriate location:-[ 3 marks] a. The kind of ratio obtained in F2 generation by crossing 2 traits of character is called monohybrid cross. b. WHO has headquarters in USA, India and Congo. c. The condition in which a chromosome carries similar alleles of characters is called homozygous . d. A cross between to varieties of organism taking into consideration a single character is called monohybrid cross. e. Red Cross has societies in all countries and over 100 members. f. Laparoscopy is the mechanism of oviduct. Question 4 www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com 1. Study the figure and answer the questions:- a. Identify parts 1 and 4. b. Give 2 alternative names for Exophthalmic goiter. c. Complete the brochure :Symptoms of Exophthalmic Goitre Protruding eyes _____________ ___________________ ______________ d. What is Corn s syndrome? _________ e. Name and define the disorder caused by hyper secretion of parathormone. f. Mention the role of LH-RH, TRH and PRH. Which gland produces it? How? Explain. g. Explain the shape and location of 1. h. Draw a neat labeled diagram of the pituitary gland and mark the parts. i. Name 2 glucocorticoids. Name a flat conical gland. What is dihydroepiandrosterone? j. Give the biological names of hormones produced by a cap like gland:i Epinephrine ii Nor epinephrine www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com iii iv v vi Noradrenaline Adrenaline Noradrenaline Adrenalin vii Epinephrin viiiNorepinephrin ix Noradrenalin x All of these k. Choose the symptoms of Addison s disease from :i Renal failure ii Muscular weakness iii Low blood sugar iv High blood sugar v High blood pressure vi Nausea vii Vomiting viii Low b.p. ix Diarrhoea x Nervous imbalance xi Oedema xii Nausea xiii Light pigmentation xivDark pigmentation xv Rise in blood volume xviDecrease in blood volume xvii Electrolyte upset xviii Na+ - K+ imbalance [ 7 marks] 2. Study the following figure carefully. Explain what is being shown in each figure. Also define the process shown explicitly in the figure. [ 3 marks] Question 5 1. Observe the diagram given below and answer the questions that follow:[ 5 marks] www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com i ii iii iv v Mark PARTS A- G. What is the mass of the structure shown? Name 2 membranous coverings of the heart? Mention the valve at the opening of the H. Redraw the figure. Name and mark the series of inner muscular ridges in the inner surface of the heart. vi Complete:Two aortic trunks arise directly from the ventricle - _________ from right and ____________ from left and curving to left side to form _____________. A corresponding arch on other side denotes -_____________. vii What is lesser circulation ? viiiMention the duration of LUBB and DUP sounds. ix Explain the renal and hypophysical portal systems. x Differentiate between SA node and AV node. 2. Observe the diagram given below and answer the questions that follow:[ 5 marks] www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com i Mark PARTS A H. ii What is the difference between the two nephrons? iii Urea is synthesized in the liver. Explain the two steps involved in this process. iv What are the 4 conditions on which Effective Filtration pressure in Glomerular Filtration depend on? v Write a brief note on the following kidney disorders:a. Pyuria b. Ketonuria c. Haemolytic jaundice vi What are the following? In which parts of the figure do they occur? Explain its importance. a. Augmentation b. Obligatory reabsorption c. Facultative Reabsorption vii The following table is based on glomerular filtration. Complete it: Part of bowman s capsule /glomerulusSubstances permeable 1. Endothelium of capillaries 2. Basement membrane of blood www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com capillaries 3. Epithelium of Bowman s capsule Question 6 1. Given below are 2 real life photographs (electron microscope) of 2 stages of a cell division. [ 5 marks] A B i Identify A and B. Give reasons. ii Why is first stage of mitosis known as spireme stage? iii Differentiate between prometaphase and prophase. iv Mark and label primary constriction in the figure. v What is the chemical constitution of spindle fibres? vi When do chromosomes get granulized? vii What is the function of endoplasmic reticulum in telophase? viii What produces cell plate? What is cell plate also called? ix Differentiate between animal and plant division on basis of chemical control. x What is the significance of mitosis due to multicellular condition? 2. Observe the diagram given below and answer the questions that follow:[ 5 marks] www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com i Label parts A-F. ii Draw a neat labeled diagram of chloroplast and mark the following : Stoma lamellae Grana lamellae RNA iii What is electron transport chain? Where does it occur? iv What are the two types of Photophosphorylation? v What is the use of protons in Photochemical phase? vi Represent the different phases of Calvin Cycle with the help of equations and descriptions. Decipher the phases from the following diagram:- vii Draw a graph to represent the 3 cardinal points of a factor for photosynthesis viiiDifferentiate between absorption spectrum and action spectrum. ix How does the age of a leaf affect photosynthesis? x Explain the following graph:- www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com Question 7 1. Observe the diagram given below and answer the questions that follow:- i ii iii iv Label Parts A-F. Mention the 3 protective coverings of ovum. Where in fallopian tube does fertilization occur? Differentiate between the 3 foetal membranes on basis of structure and function. v Redraw the third figure and mark the periods of progression and stages of zygote. [ 3 marks] 2. Choose the odd one giving reasons:- [ 1 marks] i Hydrogen peroxide, iodine, spirit , silver nitrate ii T.B, Meningitis, Pneumonia, typhoid 3. Given below are a set of terms. Match them. [ 1 marks] Streptomycin, Chloramphenicol, Oxytetracycline, Erythromycin, Diphtheria, Tonsils, Pertussis, Pneumonia, Intestinal infections, Local infection, Bacterial urinary infections www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com 4. Observe the diagram given below and answer the questions that follow:- i ii iii iv Mark Parts A-D. Mention the function B and D Identify the second diagram. What is the specialty? Where is it found? Pick odd one giving reasons :- Nasturtium, Oats, Colocasia, Melon [ 2 marks] 5. Discuss the following terms in association with transpiration:[ 2 marks] i Scotoactive stomata ii Abscissic acid Question 8 1. Observe the diagram given below and answer the questions that follow:- [Type a quote i What is the speciality of the eye shown above? Explain. ii Redraw the figure and mark the following : Extraocular muscle Trochlear nerve www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com iii iv v vi Optical axis Radial muscle Lacrimal gland Tarsal gland Discuss the following defects of the eye : Glaucoma Trachoma Photophobia Strabismus Classify the visual pigments of cone cells. To which colours are the eye most sensitive? Name the following a. The agent controlling iris muscles b. The structure secreting aqueous humour [ 5 marks] 2. Observe the diagram given below and answer the questions that follow:- i ii iii iv Identify the structure. Label Parts A- F Differentiate between C and F Explain functions of parts A F [ 3 marks] 3. Answer the following:- [ 2 marks] i What is the lever-age of ossicles? ii Explain the role of macula in balancing. iii What are cristae in ear? iv Give another name for auditory canal. Question 9 www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com 1. Observe the diagram given below and answer the questions that follow:- a. Mark PARTS A F. Mention the functions. b. Give 2 names for the given structure. c. Differentiate between the following on basis of condition specified:i Thalamus and Hypothalamus (location) ii Cerebrum and Cerebellum( ventricles) iii Pons varoli and brain stem (Definition) iv ACP and PCP (Meaning and location) [ 3 marks] 2. Observe the diagram given below and answer the questions that follow:[2 marks] i Label parts A- E. ii Redraw the figure and label Neurolemma and Neurofibrillae. Distinguish between the two. iii What are axon hillocks? Locate it in the figure. iv How many such structures are present in the body? [ 2 marks] 3. Complete the given charts:i www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com ii 4. Write sequentially the possible nervous pathway for Pavlov s experiment. [1 mark] 5. Differentiate between nucleotides and nucleosides by listing the different types of it. [ 1 marks] www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.aipmtguess.com | www.aieee.com | www.niosguess.com | www.iitguess.com
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