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ICSE Class X Prelims 2023 : Biology : II TERMINAL EXAMINATION

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Pushpa Jaimon
Bharathiar University (BU), Coimbatore
Biology

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GRADE: X MARKS: 80 II - TERMINAL EXAMINATION BIOLOGY TIME :02.00 h DATE: 16 Nov 2022 SECTION A (Attempt all questions from this Section.) Question 1 Select the correct answers to the questions from the given options. (Do not copy the question.Write the correct answer only) : [15] (i) The part of the human eye where the rods and cones are located is: (a) Iris (b) Retina (c) Sclera (d) Choroid. (ii) The outermost layer of the meninges of the brain: (a) Arachnoid (b) Piamater (c) Duramater (d) Pericardium. (iii)Urine is carried from urinary bladder to the exterior by: (a) Ureter (b) Uterus (c) Urethra (d) Umbilical cord. (iv)A muscular wall is absent in : (a) Capillary (b) Arteriole (c) Venule (d) Vein. (v) Cytokinins are predominantly present in: (a) Meristematic tissues (b) Permanent tissues (c) Endodermis (d) Epidermis. (vi)The grey matter of cerebrum mainly consists of: (a) Axons (b) Cytons (c) Dendrites (d) Both a and b. (vii) Valves are found in veins to check the backflow of blood flowing under: (a) Low pressure (b) High pressure (c) Atmospheric pressure (d) No pressure. (viii) Hormone that delays ageing in plants: (a) Gibberellines (b) Cytokinin (c) Abscisic acid (d) Ethylene. (ix)Artificial ripening of fruits is carried out by : (a) Auxins (b) Kinetin (c) Ethylene (d) Creatine. (x) Which of the following is NOT a true statement about the placenta? (a) It is an organ that is found in all species. (b) It attaches the fetus to the uterine wall. (c) It provides nutrients to the fetus (d) It allows the fetus to transfer waste products to the mother s bloodstream (xi)On which day of the menstrual cycle does ovulation take place? (a) 5th day (b) 28th day (c) 14th day (d) 1st day. (xii) The defect of the human eye caused due to the uneven surface of the cornea. (a) Myopia (b)Hyperopia (c)Astigmatism (d) Presbyopia (xiii) The pigment present in the choroid layer is ---------------. (a)Haemoglobin (b)Melanin (c)Urochrome (d) Bilirubin (xiv) The leaf is boiled in the specific solution over a water bath (a) To destroy chlorophyll content of leaf (b) To destroy all enzymes present in leaf (c) To destroy all food stored in the leaf (d) To destarch the leaf Question 2 (i) Name the following: [5] (a) The statistical study of human population. (b) One gaseous compound that depletes the ozone layer. (c) Inability to see due to opacity of the lens.. (d) Norms applicable for automobile. (e) The mineral constituent of chlorophyll. 1 (ii) (iii) Arrange and rewrite the terms in each group in the correct order so as to be in a logical sequence beginning with the term that is underlined. (a) Ovulation,Implantation,Fertlization,parturition,gestation (b) Pinna, cochlea, malleus, stapes, incus. (c) Platelets, fibrin, thrombokinase, fibrinogen, thrombin. (d) Cornea, optic nerve ,lens, vitreous humour,aqueous humour (e) Right ventricle,Aorta, Bicuspid valve,Lungs,Left auricle. Match the items given in Column I with the most appropriate ones in Column II and rewrite the correct matching pairs. (a) (b) (c) (d) (e) Column I Yellow spot Nissl s granules Acetylcholine Leydig s cells Natality [5] [5] Column II Birth rate Bright vision Testosterone Cyton Death rate Neurotransmitter (iv) Choose the odd one out from the following terms and name the category to which the others belong: (a) Purkinje fibres, A.V node, A.V valve, S.A node (b) Auxins, Abscisic, Cytokinins, Oxytocin , Gibberellins. (c) Polythene bag, Crop residue, Animal waste, Decaying vegetable. (d) Progestins,Condoms,IUD,Cervical caps (e) Vestibular canal,Neural canal,Tympanal canal. Median canal [5] (v) State the exact location of the following structures: (a) Cochlea (b) Mitral valve (c) Lens (d) Epididymis (e) Lacrimal gland [5] SECTION B Answer any four questions Question 3 (i) Expand CFC. (ii) Define growth rate (iii) What is diapedesis? (iv)Give one difference between yellow spot and blind spot. [1] [2] [2] [2] (v) The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the questions that follow: [3] (a) Name the phase. (b) Which parts of the heart are contracting in this phase ? Give a reason to support your answer. (c) How many valves are closed in this phase? 2 Question 4 (i) (ii) (iii) (iv) (v) Define parthenocarpy. [1] Write two functions of spleen. [2] Give two reasons for the sharp rise in world population. [2] Mention the steps involved in the starch test. [2] Sausan wanted to conduct an experiment on photosynthesis. Before she started her investigation, she left the plant in a dark cupboard for 48 hours.She set up her experiment in the garden as shown in the diagram below. [3] After four hours, she removed leaves A, B and C and conducted a starch test on the leaves. Which one of the following sets of result would she most likely obtain? (i) What physiological process did she study? (ii) Define the process. (iii)What would be the result of the starch test performed on the leaf A, B and C? Question 5 (i) Write the overall equation of photosynthesis. [1] (ii) Mention any two harmful effects of noise pollution. [2] (iii) Name the fluid present in the ventricles of the brain.Write one function of the fluid. [2] (iv) Differentiate between corpus callosum and corpus luteum. [2] (v) The diagram given alongside represents the human brain as seen in an external view. Study the same and then answer the following questions that follows. [3] (a) Name the parts 1,2. (b) Mention the difference in the arrangement of the nerve cells in the parts 1 and 4 . (c) Name the sheet of nerve fibres that connect the two halves of the part labelled 1 . Question 6 (i) Define Natality. [1] (ii) Differentiate between haemophilia and dengue fever. [2] (iii) State the function of cerebellum. [2] (iv) Which plant hormone is called stress hormone.?Why it is called so? [2] (v) Study the following diagram carefully and then answer the questions that follow.The diagram is depicting a defect of the human eye . [3] (i) Identify the defect shown in the diagram.Give one possible reason for the above defect (ii) Draw a neat labelled diagram to show how the above defect can be rectified. 3 Question 7 (i) What is synapse? [1] (ii) Name an enzyme present in the tears and mention its function.. [2] (iii) Expand the following: (a)NADP (ii) IUD [2] (iv) Name the pigments present in rods cells and cone cells. [2] (v) Draw neat labelled diagram of membranous labyrinth [3] Question 8 (i) Define-Greenhouse effect. [1] (ii) On a bright sunny day, the leaves of certain plants roll up. [2] (iii) Differentiate between Pregnancy and Parturition. [2] (iv) Mention the surgical methods of contraception in human males and human females. [2] (v) Given alongside is the diagram of a klinostat. Study the same then answer the following questions: [3] (a) Name the type of tropism and define. (b) What will you observe in the set up in the plant if rotated? Give reason. 4

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