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ICSE Prelims 2016 : Biology

7 pages, 80 questions, 48 questions with responses, 53 total responses,

Blair Stromhold
Baldwin Girls' High School, Bangalore

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ST . JOSEPHS BIOLOGY SECTION A Q1: A.name: i)a specific part of chromosome that attaches to spindle fibres during cell division. ii)process by which water absorbed by the roots is conducted upwards in the plant body. iii) organ of urea production in the body. iv)part of human brain that helps in temperature regulation of the body. v)inner lining of uterus. b.identify the odd one and state the category to which the other 4 belong: i) iodine, phenol, formalin, lime, DDT. ii)G1 phase, G2 phase , S phase, G3 Phase, M phase. iii) xylem, cortex, phloem, endodermis, root hair. iv)sweat, saliva, tears, mucus, HCl. v)luteal phase, phottochemical phase, follicular phase, menstrual phase, ovulatory phase. c. state the most important function: i) pedigree chart ii) hidathodes iii) afferent arterioles iii) hormonal contraceptive iv) seminal vesicle d. mention the exact location : i) isthmus ii) leydig cells iii) corpus callosum iv) pulmunory semilunar valve v) renal capsule e.choose the corect answer : 1. meiotic cell division is observed in___________. (liver cells, anther cells, meristematic cells, epithelaial tissue) 2. ____________ vaccine is given to build a immunity against TB. (salks, TAB, BCG, DPT) 3. the difference between birth and death rate is________( natality, mortality, growth rate, population density) 4. source of energy that does not cause pollution is_______(petroleum, nuclear energy, solar energy, wood) 5. wooden doors swell during winter due to_________( imbibition, active transport, plasmolysis, flaccidity) f. match the following: a.hypersecretion of somatotropin in children b. scrubbers c. cobalt chloride paper d. stoma e. blood pressure 1. chloroplast 2. removal of solid waste 3. to check transpirtion 4. removal of gaseous waste 5 stethosscope 6. guard cell 7. sphygmomanometer 8. to check photosynthesis 9. acromegaly 10. gigantism g. fill the blalnks inner ear of human is also known as _______1_______ . ____2____is the snail shell shaped spiral sturcture. It is median canal is filled with ______3____ and the other 2 canals are filled with ---------4------. The middle canal has special sensory cells called -----5--------. There is a set of 3 -----6------ arranged at right angle to 3 different planes. The swollen base region of part labeled 6 is called --7-- . Vestibule has 2 parts- __8___ & ____9_____. Nerve connecting the ear and the brain is called ___10______. h. study the diagram given below and answer the following quesetion. i. label the parts 1 to 4 ii. mention 2 functions of part labeled 2 iii. where does the foetus development occur in the human body? How is it different from the embryo iv. rewrite the following parts in the correct order as per logical sequence. Implantation, Parturition, ovulation, gestation, fertilisation, lactation. Section b Q2: A. differentiate: i) homozygous and heterozygous condition ii)transpiration and bleeding iii)mitosis in animal and plant cell iv)natality and mortality v) pulmunory and systemic circulation. b. the diagram given below represents a physiological process. Study teh diagram and answer the qs: 1 2 photosynthesis 3 5 4 fossilisation 6 combustion i) identify the physiological process being studied ii) define the above process. iii) fill the blocks 1-6. iv)what is the role played by part 5? Q3: A. draw the eye and label the parts with the following functions: i)nutritive layer ii)area of best vision iii)region maintaining shape of eye iv) structure that holds lens in position v)layer of eyeball that is continuous with inner lining of upper eyelid. B. i) list out 4 imp functions of WHO. II)mention 4 reasons that has lead to population outburst in india iii) what is the emblem of red cross and family welfare. Q4: A. i) answer the foolowing after studying the diagrams. homologous chromosomes a) name and define the process b)explain the events that have led to this process. ii)draw animal cell with 5 chromosomes during metaphase of mitosis. b.give reason: i)hypertrichosis is a condition seen only in man. ii)use of muslin cloth in thistle funnel expts does not cause osmosis. iii)iodine 131 is harmful for the human body. iv) father's chromosome determines the gender of the child. v)methyl alcohol is used in expts that study photosynthesis. Q5: A. see the diagram and answer the questions: 5 6 2 3 1 4 i) name 1-6. ii) name any 2 substances reabsorbed in parts 1 and 2. b. define: i) tubectomy ii) root pressure iii) biochemical phase iv)MTP V) feedback mechanism. Q6: A. a homozygous tall (T)plant bearing red(R) flowers is crossed with homozygous dwarf(t) palnt bearing white (r) flowers. i) give the genotype and phenotype of F1 gen ii)using punnett square,write phenotype ratio of F2 gen. iii) name and state law of mendell that can only be explained by a dihybrid cross. B. study the diagram and answer the questions. Reservoir Airtight container Air bubble Coloured water i) name the apparatus ii)what is the function of the apparatus iii)list any two limitations of the apparatus iv)list any two precautions of the apparatus v)what happens to the position of the air bubble when the apparatus is placed in the dark and in sunlight? Q7: A. study diagram and answer the questions: 2 1 3 4 5 6 i)name the phase of the cardiac cycle. ii)name 1-6. iii)what type of blood flows through 1 and 2? iv)why do viens have valves?( to stop the blood from flowing backwards.compared to arteries, the blood in viens flows under very low pressure. The blood in arteries is being squeezed out by the heart to all parts of the body. In viens , the deoxygenated blood is carried to the heart from all parts of the body due to which it does not flow under immense pressure. ) B.i)with the help of a diagram, explain what happens when: 1. a plant cell is placed in hypotonic solution(hypotonic solution has decreased solute.takes up water by osmosis and starts to swell but the cell wall prevents it from bursting.the plant is now said to have become turgid and the condition is turgidity) 2. animal cell is placed in hypertonic solution.(a hypertonic solution has increased solute, and net movement of water to the outside cause the cell to shrink. The cell becomes flaccid and the condition is flaccidity) ii)what are antibiotics?give an example. Name the mould that produced the first antibiotic.

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