ICSE Biology Past Paper PDF - Class 9 - Science 52

SCIENCE (52) BIOLOGY SCIENCE Paper - 3 Aims: 1. To acquire the knowledge of the economic 4. of the significance of life and its importance in importance of plants and animals....

SCIENCE (52) BIOLOGY SCIENCE Paper - 3 Aims: 1. To acquire the knowledge of the economic 4. of the significance of life and its importance in importance of plants and animals. human welfare. 2. To develop an understanding of the 5. To understand the capacities and limitations of inter-relationship between sustainability and all the biological and economic activities so as to environmental adaptations. be able to use them for a better quality of life. 3. To develop an understanding of the 6. To acquire the ability to observe, experiment, interdependence of plants and animals so as to hypothesize, infer, handle equipment accurately enable pupils to acquire a clearer comprehension and make correct recordings. CLASS IX There will be one paper of two hours duration of 2. Flowering Plants 80 marks and Internal Assessment of Practical Work (i) Flower: Structure of a bisexual flower, carrying 20 marks. functions of various parts. 1. Basic Biology A brief introduction to complete and incomplete flowers. (i) The cell, a unit of life, protoplasm, basic Essential and non-essential whorls of a difference between prokaryotic and bisexual flower; their various parts and eukaryotic cell; differences between an functions. animal and a plant cell. Inflorescence and placentation (meaning A basic understanding of the cell theory, only) structure of plant and animal cell with functions of various cell organelles. (Charts or actual specimens may be used to (Protoplasm, Cytoplasm, Cell Wall, Cell help enhance clarity of concepts.) Membrane, Nucleus, Nucleolus, (ii) Pollination: self and cross-pollination. Mitochondria, Endoplasmic Reticulum, Explanation, advantages and Ribosome, Golgi bodies, Plastids, disadvantages of self and cross- Lysosomes, Centrosome and Vacuole). pollination. Major differences between a prokaryotic Agents of pollination and the and eukaryotic cell. characteristic features of flowers Differences between a plant cell and an pollinated by various agents such as animal cell should be mainly discussed insects, wind, and water. with respect to cell wall, centrosome, A brief idea as to how nature favours vacuoles and plastids. cross pollination. (ii) Fertilisation. (ii) Tissues: Types of plant and animal tissues. Events taking place between pollination A brief understanding of their location, and fertilisation leading to the formation basic structure and functions with of zygote in the embryo sac. examples. A brief explanation of the terms double A brief understanding of their role in fertilization and triple fusion. different physiological processes in plants and animals. 119  Fruit and Seed - definition and Agriculture: nitrogen cycle (role of significance. nitrogen fixing, nitrifying and denitrifying bacteria) 3. Plant Physiology (i) Structure of dicot and monocot seeds, Industry -curing of tea, tanning of Germination of seeds, types, and conditions leather. for seed germination. (b) Harmful role of bacteria - spoilage of food, diseases in plants and animals, Structure and germination of Bean seed bio-weapons. and Maize grain. (iii) Economic importance of Fungi. Differences between monocot and dicot seeds. A brief idea of the useful role of Fungi in breweries, bakeries, cheese processing, and Differences between hypogeal and epigeal mushroom cultivation. (Processes of germination. manufacture are not required). Conditions for seed germination - To be 5. Human Anatomy and Physiology explained and supported by experiments. (a) Nutrition: (ii) Respiration in plants: outline of the process, gaseous exchange. (i) Classes of food; balanced diet. Malnutrition and deficiency diseases. A brief outline of the process mentioning the terms Glycolysis, Krebs cycle and Functions of carbohydrates, fats, their significance. proteins, mineral salts (calcium, iodine, iron and sodium), vitamins A reference to be made to aerobic and and water in proper functioning of anaerobic respiration with chemical the body. equations in each case. Sources of vitamins, their functions Experiments on gaseous exchange and and deficiency diseases. on heat production. Meaning and importance of a 4. Diversity in living organisms ‘Balanced Diet’. (i) A brief outline of the five Kingdom Role of cellulose in our diet. classification. Causes, symptoms and prevention of Main characteristics of each kingdom Kwashiorkor and Marasmus. with suitable examples: (ii) The structure of a tooth, different types - Monera, Protista, Fungi. of teeth. - Plantae - Thallophyta, Bryophyta, Structure of a tooth to be discussed Pteridophyta and Spermatophyta. with the help of a diagram. Animalia - non-chordates from Porifera Functions of different types of teeth. to Echinodermata and Chordates - all five Classes. Dental formula of an adult. (ii) Economic importance of Bacteria. (iii)Digestive System: Organs, digestive glands and their functions (including (a) Useful role of bacteria: enzymes and their functions in digestion, Medicine: antibiotics, serums and absorption and assimilation of digested vaccines food). Organs and glands of the digestive system and their functions with 120  reference to digestion, absorption and 6. Health and Hygiene assimilation. (i) A brief introduction to maintaining good brief idea of peristalsis. health. (b) Skeleton - Movement and Locomotion. General idea of personal hygiene, public hygiene and sanitation. Functions of human skeleton (ii) A brief introduction to communicable, Axial and Appendicular Skeleton non-communicable, endemic, epidemic, Types of joints with reference to their pandemic and sporadic diseases; modes of location: transmission. - immovable joints Meaning of each of the above with examples. - slightly movable joints Modes of transmission: air borne, water - freely movable (hinge joint, ball and borne; vectors (housefly, mosquito, socket joint, gliding joint, pivot joint.) cockroach). (c) Structure and functions of skin. (iii) Bacterial, Viral, Protozoan, Helminthic diseases: Various parts of the skin and their functions. Bacterial: Cholera, typhoid, tuberculosis. Special derivatives of the skin with reference to sweat glands, sebaceous Viral: AIDS, Chicken pox, Hepatitis. glands, hair, nails and mammary glands. Protozoan: Malaria, Amoebic Heat regulation - vasodilation and Dysentery, Sleeping sickness. vasoconstriction. Helminthic: Ascariasis, Taeniasis, (d) Respiratory System: Organs; mechanism of Filiariasis. breathing; tissue respiration, heat production. (symptoms and measures to control the Structures of the respiratory system. above diseases.) Differences between anaerobic respiration in (Scientific names of causative agents not plants and in man. required). Role of diaphragm and intercostal muscles in (iv) Aids to Health: Active and passive immunity. breathing to provide a clear idea of the Meaning of Active and passive immunity. breathing process. An understanding of the use and action Brief idea of gaseous transport and tissue of the following – vaccination, respiration. immunization, antitoxin, serum, Brief understanding of respiratory volumes. antiseptics, disinfectants, antibiotics. Effect of altitude on breathing; asphyxiation An idea of the local defense system and and hypoxia. its merits, difference between antiseptics and disinfectants. (v) Health Organisations: Red Cross, WHO. Major activities of the Red Cross and WHO. 121 7. Waste generation and management (iii) Specimens of germinating seeds with plumule and radicle (the bean seed and maize grain) for (a) Sources of waste - domestic, industrial, examination, identification, drawing and agricultural, commercial and other labelling the parts. establishments. ANIMAL LIFE Domestic waste: paper, glass, plastic, rags, kitchen waste, etc. (i) The examination of a human cheek cell under the microscope to study various parts of the cell. Industrial: mining operations, cement factories, oil refineries, construction units. (ii) Identification of sugar, starch, protein and fat. through conduct of relevant tests. Agricultural: plant remains, animal waste, processing waste. (iii) Examination and identification of specimens belonging to the following groups of animals: Municipal sewage: Sewage, degradable and non-degradable waste from offices, Non-Chordata - Porifera, Coelenterata, etc. Platyhelminthes, Nemathelminthes Annelida, Arthropoda. Mollusca and Echinodermata. e-waste: brief idea about e-waste. Chordata- Pisces, Amphibia, Reptilia, Aves, (b) Methods of safe disposal of waste. Mammalia. Segregation, dumping, composting, Identification of the structure of the following drainage, treatment of effluents before organs through specimens/models and charts: discharge, incineration, use of scrubbers Lung and skin. and electrostatic precipitators. (iv)Experiments to show the mechanism of Segregation of domestic waste into breathing. biodegradable and non-biodegradable by Bell jar experiment should be discussed. households: garden waste to be converted Comparison should be made with the human to compost; sewage treatment plants. lungs and respiratory tract to show the mechanism of breathing. INTERNAL ASSESSMENT OF (v) Visit a few establishments in the locality such as PRACTICAL WORK motor repair workshops, kilns, pottery making The practical work is designed to test the ability of units, fish and vegetable markets, restaurants, the candidates to make accurate observations from dyeing units. Find out the types of wastes and specimens of plants and animals. methods prevalent for their disposal. On the basis of the information collected prepare a PLANT LIFE report, suggest measures to improve the (i) The examination of an onion peel under the environmental conditions. microscope to study various parts of the cell. (vi)Visit a water treatment plant, sewage treatment (ii) A cross-pollinated flower to be examined and plant or garbage dumping or vermicomposting identified and the parts to be studied and labelled sites in the locality and study their working. e.g. Hibiscus. 122  CLASS X There will be one paper of two hours duration of 2. Plant Physiology 80 marks and Internal Assessment of practical work (i) Absorption by roots, imbibition, diffusion carrying 20 marks. and osmosis; osmotic pressure, root pressure; 1. Basic Biology turgidity and flaccidity; plasmolysis and deplasmolysis; the absorption of water and (i) Cell Cycle and Cell Division. minerals; active and passive transport (in Cell cycle – Interphase (G 1 , S, G 2 ) and brief); The rise of water up to the xylem; Mitotic phase. Forces responsible for ascent of sap. Cell Division: Understanding of the processes related Mitosis and its stages. to absorption of water by the roots. A basic understanding of Meiosis as a Characteristics of roots, which make reduction division (stages not required). them suitable for absorbing water. A brief idea of homologous chromosomes Structure of a single full-grown root and crossing over leading to variations. hair. Significance and major differences A general idea of Cohesive, Adhesive between mitotic and meiotic division. forces and transpirational pull. (ii) Structure of chromosome. Experiments to show the conduction of Basic structure of chromosome with water through the xylem. elementary understanding of terms such as chromatin, chromatid, gene structure of DNA (ii) Transpiration - process and significance. and centromere. Ganong’s potometer and its limitations. The (iii) Genetics: Mendel’s laws of inheritance and factors affecting rate of transpiration. sex-linked inheritance of diseases. Experiments on transpiration. A brief idea of guttation and bleeding. The three laws of Mendel. Concept of transpiration and its Monohybrid cross – phenotype and importance to plants genotype. Dihybrid cross – Only phenotype. Experiments related to transpiration: The following terms to be covered: gene, (a) Loss in weight of a potted plant or a allele, heterozygous, homozygous, leafy shoot in a test tube as a result dominant, recessive, mutation, variation, of transpiration. phenotype, genotype. (b) Use of cobalt chloride paper to Sex determination in human beings. demonstrate unequal rate of Sex linked inheritance of diseases to transpiration in a dorsiventral leaf. include only X-linked like haemophilia Mechanism of stomatal transpiration on and colour blindness. the basis of potassium ion exchange theory. Adaptations in plants to reduce transpiration. A brief idea of guttation and bleeding. 123 (iii) Photosynthesis: the process and its 3. Human Anatomy and Physiology importance to life in general; experiments to (i) Circulatory System: Blood and lymph, the show the necessity of light, carbon dioxide, structure and working of the heart, blood chlorophyll, formation of starch and release vessels, circulation of blood (only names of of oxygen; carbon cycle.. the main blood vessels entering and leaving The process and significance of the heart, liver and kidney will be required). Photosynthesis. Lymphatic system. The internal structure of chloroplast to Composition of blood (structure and be explained to give an idea of the site of functions of RBC, WBC and platelets). light and dark reactions. Brief idea of tissue fluid and lymph. Opening and closing of stomata based on Increase in efficiency of mammalian red potassium ion exchange theory. blood cells due to absence of certain Overall balanced chemical equation to organelles; reasons for the same. represent photosynthesis. A brief idea of blood coagulation. Introduction of the terms Structure and working of the heart along "photochemical" for light phase and with names of the main blood vessels "biosynthetic" for dark phases. entering and leaving the heart, the liver Light reaction - activation of chlorophyll and the kidney. followed by photolysis of water, release Concept of systole and diastole; concept of O2 , formation of ATP of double circulation. (photophosphorylation) and NADPH. Brief idea of pulse and blood pressure. Dark reaction - only combination of hydrogen released by NADP with CO 2 to Blood vessels: artery, vein and capillary form glucose. (detailed equations are not to be explained with the help of diagrams required). to bring out the relationship between their structure and function. Adaptations in plants for photosynthesis. Brief idea of the lymphatic organs: Experiments with regard to the factors spleen and tonsils. essential for photosynthesis; emphasis on destarching and the steps involved in ABO blood group system, Rh factor. starch test. Significance of the hepatic portal system. A diagrammatic representation of “carbon cycle”. (ii) Excretory System: A brief introduction to the (iv) Chemical coordination in Plants: A general excretory organs; parts of the urinary system; study of plant growth regulators; Tropic structure and function of the kidneys; blood movements in plants. vessels associated with kidneys; structure and function of nephron A brief idea of the physiological effects of Auxins, Gibberellins, Cytokinins, A brief idea of different excretory organs Abscisic acid and Ethylene in regulating in the human body. the growth of plants. External and internal structure of the A basic understanding of the tropic kidney; movements in plants with reference to – Phototropism, Geotropism, Parts of the urinary system along with Hydrotropism, Thigmotropism and the blood vessels entering and leaving Chemotropism (supported with suitable the kidney; functions of various parts of examples). the urinary system (emphasis on diagram with correct labelling). A general idea of the structure of a kidney tubule/ nephron. 124  A brief idea of ultra-filtration (emphasis (iv) Endocrine System: General study of the on the diagram of malpighian capsule); following glands: Adrenal, Pancreas, Thyroid selective reabsorption and tubular and Pituitary. Endocrine and Exocrine secretion in relation to the composition glands. of blood plasma and urine formed. Differences between Endocrine and (iii)Nervous system: Structure of Neuron; central, Exocrine glands. autonomous and peripheral nervous system Exact location and shape of the (in brief); brain and spinal cord; reflex action endocrine glands in the human body. and how it differs from voluntary action. Hormones secreted by the following Sense organs – Eye: Structure, functions, glands: Pancreas: insulin and glucagon; defects and corrective measures: Ear: Parts Thyroid: only thyroxin; Adrenal gland: and functions of the ear. Cortical hormones and adrenaline; Parts of a neuron. Pituitary: growth hormone, tropic Various parts of the external structure of hormones, ADH and oxytocin. the brain and its primary parts: Medulla Effects of hypo secretion and hyper Oblongata, Cerebrum, Cerebellum, secretion of hormones. Thalamus, Hypothalamus and Pons; A brief idea of Feedback mechanism with their functions. reference to TSH. Reference to the distribution of white and (v) The Reproductive System: Organs, gray matter in Brain and Spinal cord. fertilisation functions of placenta in the Voluntary and involuntary actions – growth of the embryo Menstrual cycle. meaning with examples. Functions of Male and Female Diagrammatic explanation of the reflex reproductive organs and male accessory arc, showing the pathway from receptor glands. An idea of secondary sexual to effector. characters. A brief idea of the peripheral and Structure and functions of the various autonomic nervous system in regulating parts of the sperm and egg. body activities. Explanation of the terms: Fertilization, Differences between natural and implantation, placenta, gestation and acquired reflex. parturition. External and Internal structure and A brief idea of the role of placenta in functions of the Eye and Ear and their nutrition, respiration and excretion of the various parts. embryo; its endocrinal function. A brief idea of stereoscopic vision, Functions of Foetal membranes and adaptation and accommodation of eye. amniotic fluid. Defects of the eye (myopia, hyperopia Menstrual cycle outline of menstrual hypermetropia, presbyopia, astigmatism cycle. and cataract) and corrective measures Role of Sex hormones: Testosterone, (diagrams included for myopia and Oestrogen and Progesterone in hyperopia only) reproduction. The course of perception of sound in Identical and fraternal twins: meaning human ear. and differences only. Role of ear in maintaining balance of the body. 125 4. Population 6. Pollution Population explosion in India; need for adopting (i) Types and sources of pollution; major control measures - population control. pollutants. Main reasons for the sharp rise in human Air: Vehicular, industrial, burning garbage, brick kilns. population in India and in the world. Water: Household detergents, A brief explanation of the terms: sewage, industrial waste, oil spills. demography, population density, birth rate, Thermal pollution. death rate and growth rate of population. Soil: Industrial waste, urban Problems faced due to population explosion: commercial and domestic waste, unemployment, over exploitation of natural chemical fertilizers. resources, low per capita income, price rise, Biomedical waste – used and pollution, unequal distribution of wealth. discarded needles, syringes, soiled Methods of population control: Surgical dressings etc. methods – Tubectomy and vasectomy. Radiation: X-rays; radioactive fallout from nuclear plants. 5. Human Evolution Noise: Motor Vehicles, Industrial Basic introduction to Human evolution and establishments, Construction Sites, Theories of evolution: Lamarck’s theory of Loudspeakers etc. inheritance; Darwin’s theory of evolution by (ii) Biodegradable and Non-biodegradable natural selection. wastes A brief idea of human ancestors – Biodegradable wastes: meaning and Australopithecus, Homo habilis, Homo example; paper, vegetable peels, etc. erectus, Neanderthals, Cro-Magnon and Non-biodegradable wastes: meaning and Homo sapiens sapiens (Modern Man) with example; plastics, glass, Styrofoam etc. reference to the following characteristics: Pesticides like DDT etc. (iii)Effects of pollution on climate, - Bipedalism environment, human health and other - Increasing Cranial capacity organisms; control measures. - Reduction of size of canine teeth Brief explanation of: Greenhouse effect and Global warming, Acid rain, Ozone - Forehead and brow ridges layer depletion. - Development of chin Measures to control pollution: - Reduction in body hair - Use of unleaded petrol / CNG in automobiles - Height and Posture - Switching of engines at traffic signal Lamarck’s theory of inheritance of acquired lights characteristics – with reference to use of - Social forestry organs (e.g.: neck and forelimbs of giraffe) - Setting of sewage treatment plants and disuse of organs (e.g.: vestigial organs - Ban on polythene and plastics in humans like wisdom teeth, vermiform - Organic farming appendix, pinnae). - Euro Bharat vehicular standard. (A brief idea of the above measures) Darwin’s theory of Natural selection: Survival of the fittest - e.g. adaptation of A brief mention of “Swachh Bharat peppered moth. Abhiyan”- A national campaign for Clean India. 126  INTERNAL ASSESSMENT OF (ii) The identification of different types of blood cells PRACTICAL WORK under a microscope. The practical work is designed to test the ability of (iii) Identification of the internal structure of the Ear the candidates to make an accurate observation from and Eye (Through models and charts). specimens of plants and animals. (iv) Identification and location of selected endocrine glands: Adrenal, Pancreas, Thyroid and Pituitary PLANT LIFE glands with the help of a model or chart. (i) Observation of permanent slides of stages of mitosis. EVALUATION (ii) Experiments demonstrating: The practical work/project work are to be evaluated Diffusion: using potassium permanganate in by the subject teacher and by an External Examiner. water. (The External Examiner may be a teacher nominated Osmosis: Thistle Funnel experiment and by the Head of the school, who could be from the potato osmoscope. faculty, but not teaching the subject in the relevant Absorption: using a small herbaceous plant. section/class. For example, a teacher of Biology of (iii) Experiments on Transpiration: Class VIII may be deputed to be an External Examiner for Class X, Biology projects.) demonstration of the process using a Bell Jar. demonstration of unequal transpiration in a The Internal Examiner and the External Examiner dorsiventral leaf using cobalt chloride paper. will assess the practical work/project work demonstration of uptake of water and the rate independently. of transpiration using Ganong’s potometer. Award of marks (20 Marks) (iv) Experiments on Photosynthesis: Subject Teacher (Internal Examiner) 10 marks to show the necessity of light, carbon dioxide and chlorophyll for photosynthesis. External Examiner 10 marks to show the release of O 2 during The total marks obtained out of 20 are to be sent to photosynthesis using hydrilla / elodea. CISCE by the Head of the school. ANIMAL LIFE The Head of the school will be responsible for the online entry of marks on CISCE’s CAREERS portal (i) Identification of the structures of the urinary by the due date. system, heart and kidney (internal structure) and brain (external view) through models and charts 127  INTERNAL ASSESSMENT IN SCIENCE - GUIDELINES FOR MARKING WITH GRADES Criteria Preparation Procedure/ Testing Observation Inference/ Results Presentation Grade I Follows instructions (written, Analyses problem Records Processes data without Presentation is accurate (4 marks) oral, diagrammatic) with systematically. data/observations format. Recognises and and good. Appropriate understanding; modifies if Recognises a number of without being given a comments upon sources of techniques are well needed. Familiarity with and variables and attempts to format. Comments error. used. safe use of apparatus, materials, control them to build a upon, recognises use Can deal with unexpected techniques. logical plan of of instruments, degree results, suggesting investigation. of accuracy. modifications. Recording is systematic. Grade II Follows instructions to perform Specifies sequence of Makes relevant Processes data appropriately Presentation is (3 marks) experiment with step-by-step operation; gives reasons observations. No as per a given format. Draws adequate. Appropriate operations. Awareness of for any change in assistance is needed qualitative conclusions techniques are used. safety. Familiarity with procedure. Can deal with for recording format consistent with required apparatus, materials and two variables, controlling that is appropriate. results. techniques. one. Grade III Follows instructions to perform Develops simple Detailed instructions Processes data approximately Presentation is (2 marks) a single operation at a time. experimental strategy. needed to record with a detailed format reasonable, but Safety awareness. Familiarity Trial and error observations. Format provided. Draws disorganised in some with apparatus & materials. modifications made to required to record observations qualitative places. Overwriting; proceed with the results. conclusions as required. rough work is untidy. experiment. Grade IV Follows some instructions to Struggles through the Format required to Even when detailed format is Presentation is poor and (1 mark) perform a single practical experiment. Follows very record observations/ provided, struggles or makes disorganised but operation. Casual about safety. obvious experimental readings but tends to errors while processing data. follows an acceptable Manages to use apparatus & strategy. make mistakes in Reaches conclusions with sequence. Rough work materials. recording. help. missing or untidy. Grade V Not able to follow instructions Cannot proceed with the Even when format is Cannot process results, nor Presentation (0 marks) or proceed with practical work experiment without help given, recording is draw conclusions, even with unacceptable; without full assistance. from time to time. faulty or irrelevant. considerable help. disorganised, untidy/ Unaware of safety. poor. Rough work missing. 128