ICSE 2023 Sample Biology Question Paper PDF

ICSE 2023, EXAMINATION Sample Question Paper- 1 (Specimen paper issued by CISCE dated 12th July 2022 for 2023 Exam) BIOLOGY (SCIENCE...

ICSE 2023, EXAMINATION Sample Question Paper- 1 (Specimen paper issued by CISCE dated 12th July 2022 for 2023 Exam) BIOLOGY (SCIENCE PAPER-3) Class-10th SOLVED. Time Allowed: 2 hours Maximum Marks: 80 Answers of this paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper. The time given at the head of this Paper is the time allowed for writing the answers. Section A is compulsory. Attempt any four questions from Section B. The intended marks for questions or parts of questions are given in brackets [ ]. SECTION-A (Attempt all questions from this section) 1. Select the correct answers to the questions from the given options. (Do not copy the question. Write the correct answer only): (i) A muscular wall is absent in: (a) Capillary (b) Arteriole (c) Venule (d) Vein (ii) On which day of the menstrual cycle does ovulation take place? (a) 1st day (b) 5th day (c) 14 day th (d) 28th day (iii) Ganong’s Potometer is used to study: (a) Photosynthesis (b) Rate of uptake of water (c) Exosmosis (d) Guttation (iv) The number of chromosomes in a human skin cell are: (a) 22 (b) 23 (c) 44 (d) 46 (v) Cretinism and Myxedema are due to: (a) Hypersecretion of thyroxine (b) Hypersecretion of growth hormone (c) Hyposecretion of thyroxine (d) Hypersecretion of growth hormone (vi) Light dependent phase of photosynthesis in green leaves takes place in: (a) Grana of chloroplast (b) Stroma of chloroplast (c) Nucleus of palisade cells (d) Cytoplasm of palisade cells (vii) An example of a biodegradable substance is: (a) Aluminium (b) Paper (c) Plastic (d) Steel To know about more useful books Click Here 58 OSWAAL ICSE Sample Question Papers, BIOLOGY, Class–X (viii) The part that is cut in Vasectomy is: (a) Urethra (b) Oviduct (c) Fallopian tube (d) Vas deferens (ix) Gestation period of human foetus is: (a) 40 days (b) 280 days (c) 280 weeks (d) 40 months (x) The part of the human eye where the rods and cones are located is: (a) Iris (b) Retina (c) Sclera (d) Choroid (xi) Organ of Corti is present in: (a) Utriculus (b) Sacculus (c) Cochlea (d) Incus (xii) The outermost covering of the brain is: (a) Arachnoid (b) Pia mater (c) Pericardium (d) Dura mater (xiii) Cytokinins are predominantly present in: (a) Meristematic tissues (b) Permanent tissues (c) Endodermis (d) Epidermis (xiv) Marine fish when placed in tap water bursts because of: (a) Diffusion (b) Plasmolysis (c) Endosmosis (d) Exosmosis (xv) Urine is carried from kidney to urinary bladder by: (a) Uterus (b) Urethra (c) Umbilical cord (d) Ureter 2. (i) Name the following: (a) The suppressed allele of a gene. (b) The knot like mass of blood capillaries in Bowman’s capsule. (c) The mineral element required for the synthesis of thyroxine. (d) One gaseous compound that depletes the ozone layer. (e) The statistical study of human population. (ii) 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) Soil water, Xylem, Root hair, Cortex (b) Tympanum, Incus, Malleus, Stapes (c) Pulmonary Vein, Left Ventricle, Aorta, Left auricle (d) Sperm, Urethra, Sperm duct, Epididymis (e) Aqueous humour, Optic nerve, Retina, Lens (iii) Match the items given in Column I with the most appropriate ones in Column II and rewrite the correct matching pairs. Column I Column II (a) Natality 1. DDT (b) Soil pollutant 2. Death rate (c) Starch test 3. Carbon monoxide (d) Mortality 4. Iodine solution (e) Air pollutant 5. Lime water 6. Birth rate 7. Growth rate Sample Question Papers 59 (iv) Choose the odd one out from the following terms and name the category to which the others belong: (a) Thyroid gland, Lacrimal gland, Pituitary gland, Adrenal gland. (b) Detergents, Sewage, X-rays, Oil spills (c) Spinal cord, Cerebrum, Pons, Cerebellum (d) Chloroplast, Cell wall, Large Vacuoles, Centrosome. (e) Auxin, Oxytocin, Gibberellin, Cytokinin (v) State the exact location of the following structures: (a) Thylakoids (b) Corpus callosum (c) Chordae tendinae (d) Prostate gland (e) Adrenal glands SECTION-B (Attempt any four questions from this Section) 3. (i) Define Guttation. (ii) Give one difference between Lenticels and Stomata. (iii) What is Parthenocarpy? Give one example. (iv) State Mendel’s Law of Segregation. (v) Study the diagram given below and answer the questions that follow: (a) Name process being studied in the above experiment. (b) What will you observe with regard to the level of water when this setup is placed in bright sunlight. (c) Mention one adaptation found in plants to overcome the process mentioned in (i). 4. (i) Expand the abbreviation- ATP. (ii) Name any two nitrogenous bases. (iii) Addition of salt to pickles prevents the growth of bacteria. Explain by giving two suitable reasons. (iv) Mention two adaptations in leaves to perform Photosynthesis. (v) Given below is a diagram representing a stage during the mitotic cell division. Answer the following questions: (a) Identify the stage. (b) Give a suitable reason for your answer in (a). (c) Name the stage that follows the one shown in the diagram. 60 OSWAAL ICSE Sample Question Papers, BIOLOGY, Class–X 5. (i) Define- Excretion. (ii) What is the significance of Hepatic Portal Vein? (iii) State two functions of vitreous humour. (iv) Which gland secretes Glucagon? What is its effect on blood sugar level? (v) Draw a neat labelled diagram to show the internal structure of a human kidney. 6. (i) Define- Gene. (ii) Differentiate between Cell wall and Cell membrane with reference to permeability. (iii) State the function of Medulla Oblongata with a suitable example. (iv) Colour blindness is generally seen in males. Explain. (v) Study the diagram given below and answer the questions that follow: (a) Identify the structure. (b) In which part of the ear is it located? (c) What is the function of the part marked A? 7. (i) Explain - Accommodation of eye. (ii) Give two reasons for a sharp rise in world human population. (iii) Mention two functions of Amniotic fluid. (iv) What is the difference between Phenotype and Genotype? (v) Draw neat labelled diagrams showing the cross sections of an Artery and a Vein. 8. (i) Define - Pollution. (ii) Plants droop on a hot day even though the soil is well watered. Explain. (iii) Differentiate between Menarche and Menopause. (iv) State two harmful effects of acid rain. (v) The diagram given below shows a type of tropism. Answer the questions that follow: (a) Name the type of tropism. (b) Define the above mentioned tropism. (c) Give an example of a stimulant that helps in the growth of the part marked- A.   SOLUTIONS Sample Question Paper–1 BIOLOGY (SCIENCE PAPER-3) SECTION-A Explanation: 280 days: The average length of human gestation is 280 days, or 40 weeks, from 1. (i) Option (a) is correct the first day of the woman's last menstrual Explanation: Capillary: It is made of single layer period. of squamous epithelium, hence it does not (x) Option (b) is correct contain any muscular wall (xi) Option (c) is correct (ii) Option (c) is correct Explanation: Cochlea: The Organ of Corti Explanation: 14th Day: In an average 28-day contributes to the audition and it is an organ of menstrual cycle, ovulation typically occurs the inner ear located within the cochlea. about 14 days before the start of the next (xii) Option (d) is correct menstrual period. Explanation: Dura mater: The tough outer (iii) Option (b) is correct layer is called dura mater. This tissue separates Explanation: Rate of uptake of water: Ganong's the cranial cavity into compartments and Potometer is used to measure the transpiration protects the brain from displacement. rate (water uptake by the plant shoot) in a (xiii) Option (a) is correct laboratory. Explanation: Meristematic tissue: Cytokinin is (iv) Option (d) is correct predominantly present in Meristematic tissue. Explanation: 46: All the cells are made of pair (xiv) Option (c) is correct of 23 chromosomes. It means, humans have 46 chromosomes in total. Explanation: Endosmosis: Marine fish when thrown under tap water bursts because of (v) Option (c) is correct Endosmosis. Explanation: Hyposecretion of thyroxine: The (xv) Option (d) is correct cause for cretinism and myxedema is due to the hyposecretion of the thyroid hormones. Explanation: Ureter: When urine is formed, The deficient secretion of thyroxine is due to tubes called ureters transport it to the urinary underactivity of the thyroid gland. bladder, where it is stored and excreted via the urethra. (vi) Option (a) is correct Explanation: Grana of chloroplast: The 2. (i) (a) Recessive allele reactions of light-dependent phase of (b) Glomerulus photosynthesis takes place with the (c) Iodine thylakoids. The green-coloured pigment, (d) Chlorine atoms chlorophyll, captures the energy from the sun of the breakdown of water molecules. (e) Demography (vii) Option (b) is correct (ii) (a) Soil water Root hair Cortex Xylem Explanation: Paper: Biodegradable material (b) Tympanum Malleus Incus Stapes can be decomposed by the activity of micro- (from outside to inside) organisms which includes animal and human (c) Pulmonary Vein Left auricle Left waste, plant products such as wood, paper, etc. ventricle Aorta (viii) Option (d) is correct (d) Sperm Epididymis Sperm duct Explanation: Vas deferens: The vas deferens is Urethra cut and a small piece may be removed, leaving (e) Aqueous humour Lens Retina a short gap between the two ends. Optic nerve (ix) Option (b) is correct (iii) a—6, b—1, c—4, d—2, e—3 62 OSWAAL ICSE Sample Question Papers, BIOLOGY, Class–X (iv) (a) Odd term: Lacrimal gland (iv) Large surface area for maximum light Category: The other three glands belong absorption and thin structure-short distance to Endocrine system. for carbon dioxide to diffuse into leaf cells. (b) Odd term: X-Rays (v) (a) Late prophase Category: The other three are water (b) As the nuclear membrane is disappearing. pollutants. (c) Metaphase (c) Odd term: Pons 5. (i) The separation and throwing off the waste Category: The other three are the major materials or toxic substances from the cells and parts of the brain. tissues of a plant or animal is called excretion. (d) Odd term: Centrosome (ii) The hepatic portal vein carries 75% of the Category: The other three belongs to plant hepatic blood flow and it supplies veins with cell. metabolic substrates. (e) Odd term: Oxytocin (iii) It helps to maintain the round shape of the eye Category: The other three belongs to plant and can also help with vision clarity and shock growth hormones category. absorbance. (v) (a) Grana in the stroma (matrix) of chloroplast (iv) Glucagon is a hormone that your pancreas (b) Underneath the cerebrum at the midline makes to help regulate your blood glucose of the brain (sugar) levels. Glucagon increases your blood (c) Between the papillary muscles and the sugar level and prevents it from dropping too edges of the tricuspid and mitral valve low. (d) Just below the bladder and in front of the (v) rectum (e) On top of both kidneys 3. (i) Guttation is the loss of water in the form of water droplets from hydathodes (small pores) on the leaf margin of a small herbaceous plant. (ii) Stomata mainly occur in the lower epidermis of leaves, whereas lenticels occur in the periderm of the woody trunk or stems. (iii) Parthenocarpy is the development of fruit without fertilisation. For e.g., Grapes, orange (iv) During the formation of gamete, all the genes 6. (i) A gene is the basic physical and functional unit separate from each other so that each gamete of heredity. carries only one allele for each gene. (ii) Cell wall: The cell wall is fully permeable to (v) (a) The process being studied in the above smaller molecules sized upto 30-60 KDa. experiment is transpiration of water. Cell membrane: The cell membrane is (b) When the experimental setup is placed in selectively permeable. It controls the movement bright sunlight, we can observe that the of the substance into and outside of the cell. rate of transpiration highly increases thus (iii) Medulla oblongata is a key conduit for nerve the level of the water level in the test tube signals to and fro from your body as it connects is seen to decrease fast from its initial your brain and spinal cord. It also helps control marking. vital processes like your heartbeat, breathing (c) One adaptation is plants in loss of leaves, blood vessel dilation, and blood pressure. i.e, leaves are completely absent or (iv) The genes responsible for the color blindness changed into spines, such as cacti to are located on the X chromosome and males overcome the water loss during Guttation. have only one X chromosome, from their 4. (i) Adenosine triphosphate (ATP) mother. (ii) adenine, thymine (v) (a) Semicircular Canals (iii) Salt acts as a preservative agent and it prevents (b) They are located in the inner part of the the microbial contamination. ear. - The concentration of the pickle increases (c) The semicircular (anterior) canal sense head upon the addition of salt. rotations, arising either from self-induced - Exosmosis occurs when the bacteria come movements or from angular accelerations into contact with the pickle, the cell of the head imparted by external forces. becomes flaccid, causing the death of the bacteria. 7. (i) Accommodation is the process by which certain muscles function, to adjust the focal length of Solutions 63 the image from a distance and tune it to see the 8. (i) Pollution is the introduction of harmful nearer objects automatically. materials into the environment through (ii) Better health care is available for all age groups different means like air, water, soil, etc. and Food shortage has been overcome due to (ii) As on a hot day, the rate of transpiration the Green Revolution. exceeds the rate of water absorption by the (iii) Amniotic fluid allows for freedom of fetal roots. movement and permits musculoskeletal (iii) The first menstruation of the human female on development, and it also protects the foetus the attainment of puberty that occurs at about from injury and temperature changes. 13 years of age is called menarche, whereas the (iv) The genotype is a set of genes in DNA phase in the human female’s life when responsible for unique trait or characteristics ovulation and menstruation stop that occurs at (like TT or Tt is the genotype for trait height) about 45-55 years of age is called menopause. whereas the phenotype is the physical (iv) Acid rain leaches aluminum from the soil which appearance or characteristic of an organism is harmful for plants and animals. It also (like tall or dwarf are the phenotypes of trait removes minerals and nutrients from the soil height). that trees need to grow. (v) Artery (v) (a) The type of tropism is Chemotropism. (b) It is the phenomenon of growth of plant organs in response to chemicals. (c) Sugars and Peptones 