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ICSE Class X Prelims 2023 : Biology (Royal Academy, West Medinipur) : Pre-Board

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Satyam Dey
Vidyasagar Shishu Niketan (VSN), West Medinipur
XI-XII Commerce

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Rojal Arademy Pre-Board Examination Class X Subject Biology Session: 2022 - 2023 Time: 2 Hrs. Full Marks : 80 Section - A [Attempt all questions from this section] Question 1. [15] Select the correct answers to the questions from the given options. [Do not copy the questions. Write the correct answer onlyl A. A muscular wall is absent in: i) Capillary ii) Venule ii) Arteriole iv) Vein B. Generally on which day ofthe menstrual cycle does ovulation take place? i) 1st day C. i) The number of chromosomes in a human skin cell are: 22 ii) 23 ii) 44 D. Cretinism and Myxedema are due to - ii) 5th day ii) 14h day i) Hypersecretion of thyroxine ii) HYpersecretion of thyroxine iv) 28 day iv) 46 ii) Hypersecretion of G.H. iv) Hyposecretion of G.H. E. Birth rate is the number of live births i) Per 100 people per year iii) Per 1000 people per year ii) Per 100 people per decade iv) Per 1000 people per decade F. Burning of waste substances usually at high temperature is - i) Land filling G. The information source for making proteins in the cell is - i) Chromosome i) Incineration i) DNA ii) Composting iii) Enzyme H. Which one of the following has cytoplasm but not nucleus? i) Xylem vessel I. Organ of Corti is present in Utriculus ii) Sacculus i) J. i) Sieve tube iv) Companion cell iv) Cochlea ii)22+Y chromosomes iv) 44+ XX chromosomes Accumulation of non-biodegradable level is known i) ii) incus iv) Nucleus After mitotic cell division, a female human cell will have - 1) 22 +X chromosomes iii) 44+ XY chromosomes K. ii) Tracheid iv) Segregation trophic Pollutions as pesticides in the food chain in increasing amount at each higher - i)Eutrophication ii) Biomagnification iv) Accumulation L. A person is unable to swallow after a head injury. Which part of his brain is responsible for this? i) Cerebral hemisphere ii) Diencephalon ii) Midbrain iv) Hind brain M. Which radioactive waste is i) lodine 131 N. A i) Right atrium . If a i) 20% in Mayapuri, ii) Cobalt 60 responsible for causing severe damage ii) Cobalt 50 highly thick muscular chamber of the heart ishaemophilic ii) Left ventricle man marries a normal homologous will be haemophilic? is the probability that their daughter iv) 100% ii) 0% ii) 50% iv) lodine 141 iv) Left auricle ii) Right ventricle woman, what Delhi in 2010? Question 2. 5 A. Name the following: a) The suppressed allele of a gene. b) The centre of reflex action. c) A neurotransmitter d) Part of ovary that produces progesterone e) The process of RBCs formation. B. Choose the odd one out from the following terms and name the category to which the other belong - a) Sneezing, Coughing, Typing, Blinking b) Fundus, Cervix, Vagina, Testes c) Smog. Dizziness, Allergies, Coughing d) GH, ADH, TSH, FSH e) Cornea, Choroid, Iris, Pupil C. Match the items in Column I with the most appropriate ones in Column II and rewrite the correct matching pairs Column II a) b) Column Junction between 2 neurons Luteal phase ii) Synapse c) Auditory nerve ii) Cranial meanings d) e) Protective covering of brain Occipital lobe i) Ears iv) Progesterone v) Visual perception vi) Testosterone vii) Neurotransmitter D. Arange 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) Cortex, Xylem, Soil water, Root hair b) Pulmonary vein, Left ventricle, Aorta, Left auricle c) Lens, Retina, Aqueous humour, Optic nerve d) Receptor, Motor neuron, Spinal nerve, Sensory nerve, Effector e) Spongy cells, Upper epidermis, Stroma, Palisade tissue, Substomatal space E. State the exact location of the following structures a) Blind spot b) Oval window c) Prostate gland d) Stirrup e) Nissl's granules [5] Section B Attempt any FOUR questions from this section] [1+2+2+2+3] Question3. a) b) Define passive transport. What is chemotropism? Give one example. c) d) What is the significance of Rh factor in pregnancy? e) A What is parthenocarpy? Give one example. complete ring of bark was removed from bark i) of the tree appeared as 'B'. the shown in the figure 'A'. After about one month, and answer the questions that follows: a tree a Study the figures What is the aim of the above experiment? ii) Why does the bark below the ring shrink? iii) State the location of Xylem and phloem in vascular bundle. [1+2+2+2+3] Question 4. a) Define ditresis. and not in the It is better to transplant seedlings in a flower bed in the evening Differentiate between pure bread and hybreed. The gender of a child depends on father. Explain. of an artery and a vein. Draw neat labeled diagrams showing the cross-section - b) c) d) e) [1+2+2+2+3] Question 5. a) b) morning. Why? Define gene. What is the significance of hepatic portal vein? Give two reasons for a sharp rise in world human population. c) Give suitable d) Some women have facial hair like beard and moustache. follows: that e) Study the given diagram and answer the questions i) Identify the structure Labelled as A. ii) How does part 'F" differs from part 'D ? il) Among A. B and C where does seminiferous tubules are located? reason behind it. [1+2+2+2+3] Question 6. a) Define systemic circulation. b) c) Write the composition of urine. Make a Punnett Square for finding out proportional of different genotypes in the progeny of a genetic d) e) cross between pure tall (TT) pea plant with a pure dwarf (tt) pea plant. Rate of photosynthesis is low at very high temperature. Why? Study the diagram given below and answer the questions that follows A- i) Name the parts labeled A. B and C in the figure. ii) What is the function of CSF? ii) Name the different layers of meaninges. Question 7. a) b) c) d) e) Define the term greenhouse effect. Why resources cannot keep pace with the rising population? The mature erythrocytes in humans lack nucleus and mitochondria. Give reason. What are the differencesbetween diabetes insipidus and mellitus? Draw a well labeled diagram of the inner ear. Question 8. a) b) [1+2+2+2+3] Name the part of inner ear which converts the pressure variations into electrical signals. When the ovum get fertilized, the menstrual cycle stops temporarily in a woman. Give suitable explanation. c)State two functions of spleen. d) e) [1+2+2+2+3] State two functions of ABA. Observe the image and answer the following questions- i) Identify the type of pollution shown in the above image. ii) How this type of pollution is harmful to humans? ii) What are the underlying causes of this pollution?

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