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ICSE Prelims 2015 : Biology (Innisfree House School (IHS), Bangalore)

6 pages, 84 questions, 67 questions with responses, 122 total responses,

Tejaswini Jayanth
Innisfree House School (IHS), Bangalore
pre school to 10th grade

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INNISFREE HOUSE SCHOOL I PRELIMINARY EXAMINATION 2014 - 2015 BIOLOGY CLASS : 10 MARKS : 80 DATE : 11-11-2014 TIME : 2 Hrs. Answer to 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. Attempt all question form Section A (compulsory) This paper consists of 6 printed pages. The intended marks for questions or parts of questions are given in Brackets[ ]. ------------------------------------------------------------------------------------------------SECTION A Question 1 a) Name the following. [5] i) The defect of the eye due to uneven curvature of the cornea. ii) Alternative form of a gene occupying the same position on a chromosome. iii) Specilised membrane bound compartments in a cell. iv) The neurotransmitter stored at the end of the axon. v) A solution whose concentration is more than the cell sap. b) The first pair in the following list indicates the kind of relationship that exists between both the items. Rewrite and complete the second pair on a similar basis. [5] i) Cochlea hearing :: Semicircular canal : ___________ ii) AB blood group; AB antigen :: O blood group : _______________ iii) DDT ; disinfectant :: carbolic acid : ________________ iv) Myopia ; concave lens :: Hyper metropia :______________ v) Diabetes insipidus : water :: diabetes mellitus ; c) Give exact location for the following. i) Thylakoids ii) SA Node iii) Fovea iv) Hydathode v) Adrenal gland [5] d) Given below are five sets with four terms each. In each set one term is odd one. Choose the odd one of the following terms given and name the category to which the others belong. [5] i) sneezing, coughing, blinking, typing ii) Basophil, neutrophil, Eosinophil, lymphocyte iii) Malleus, pinna, incus, stapes. iv) Haemophilia, colourblindness, night blindness, albinism v) Pleura, pericardium, spinalcord, meninges. _________________________________________________________________________________ 2 -2e) Given below are set of biological terms .Out of these 12 can be paired into 6 matching pairs. One has been done for you as an example. Write the remaining matching pairs giving the numbers 1-5 1. Nitrogen 5. Bocoman s capsule 2. Universal donal 6. glucagon 3. KoH 7. Basic unit of life 4. adenine 8. Nitrogenous base 9. Blood group O 10.malpighian body 11. insulin 12. absorbs oxygen 13. cell 14. 15. 16. 17. Beta cells of pancreas glomerulus Blood group A Absorbs carbon di oxide Example: Basic unit of life cell [5] f. Mention the specific function of each of the following. i) Palisade cells ii) centrosome iii) Blood platelets iv) Lysosomes v) Semilunar valves [5] g. The figure given below represents an experimental set up with a weighing machine to demonstrate a particular process in plants. The experimental set up was placed in bright sunlight. Study the diagram and answer the following questions. [5] i) Name the process intended for study ii) Defined the above mentioned process iii) When the weight of the test tube (A and B) is taken before and after the experiment, what is observed? Give reason to justify your observation in A and B. iv) What is the purpose of keeping the test tube B in the experimental set up? --------------------------------------------------------------------------------------------------------- 3 -3h) Given below are incomplete explanations of certain biological processes/ terms where a key word/ words has/ have been left out. Rewrite the completed explanation by inserting the suitable words in the space indicated by i) Mutation is a sudden change in one or more or in the number or in the structure of [5] ii) Imbibition is a phenomenon by which the living or dead plant cells water by surface iii) The passage of blood corpuscles through unruptured wall of blood vessels is known as iv) Phogolysis is the splitting of molecules into H + and OH- in the presence of and light. v) A DNA molecule is composed of two strands wound around each other in a double SECTION-B (Attempt any four questions) Question 2 a) Give alongside is a diagram representing a stage during mitotic cell division in an animal cell. i) Identify the above stage. Give a reason to support your answer. ii) Name the parts labelled 1, 2, 3 and 4 iii) What is the function of part 3 ? iv) Name the stage that comes after the stage shown in the diagram . Draw a neat labelled diagram of this stage b) Differentiate between the following pairs on the basis of what is mentioned within brackets. [5] i) Guttation and bleeding (cause) ii) Cobalt chloride paper and goat s bladder (process in which they are used) iii) Cranial nerves and spinal nerves (number of nerves) iv) Phenotype and genotype (definition) v) Karyokinesis and cytokinesis (meaning) --------------------------------------------------------------------------------------------------------- 4 -4Question 3 a. The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the question that follow. [5] i) Name the parts labelled A,B,C and D . ii) The root hair cell is in a turgid state. Name and explain the process that caused this state. iii) Mention one distinct a difference between the parts labelled A and B. iv) Draw a diagram of the above root hair cell as it would appear when a concentrated solution of fertilizer is added near it. b) The figure shows sex determination in humans. [4] i) What are the right substitutes for the numbers 1 to 6. ii) What is the sex of individuals represented by numbers 3,4,5 and 6? iii) Who is responsible for the sex of the offspring male or female and why? c) Copy and fill in the blanks. [1] i) Phenotypic monohybrid ration in F2 generation is ___________ ii) Phenotypic dihybrid ratio in F2 generation is __________ --------------------------------------------------------------------------------------------------------- 5 -5Question 4 a.i) What is a nerve made of? ii) Define impulse. iii) Draw a neat labelled diagram of a neuron. [3] b) What do the following stand for? i) 1.BCG 2. DT ii) List two merits of local defence system in our body [2] c) Give reasons why i) baldness is found only in male human beings. ii) the gray matter of the brain has folds and grooves. iii) gamets are always haploid in condition iv) Marine fish burst when kept under tap waterv) People living in hilly regions usually suffer from goitre. [5] Question 5 a) A well watered healthy potted plant with variegated leaves was kept in darkness for about 24 hours. It was then set up as shown in the diagram below and exposed to light for about 12 hours. At the end of this time, leaf X and leaf Y were tested for starch. Study the diagram and answer the questions that follow.[5] i) Why was the plant initially kept in darkness for 24 hours? ii) What is the function of sodium hydroxide solution in the flask? iii) Select the correct leaf from the five available choices shown in the diagram as A,B,C, D and E. Rewrite the correct answer by filling in the appropriate letter for the questions that follow. 1. After the starch test, leaf x would look like2. After the starch test, leaf Y would like _______________________________________________________________________________ 6 -6iv) The experiment with leaf Y shows that photosynthesis requires the presence of certain factors. Mention any one factor v) Give a well balanced equation to represent the process of photosynthesis. b) Complete the following table by filling in the blanks 1 to 10 with the appropriate terms. (Copy the table and complete) [5] Gland 1. Adrenal 5. Secretion Insulin 3. 6. Lacrimal 7. Growth hormone 9. Function/ Effect on Body 2. 4. Influences the metabolism of cells. 8. 10. Question 6 a) Given below is a highly simplified (but also somewhat wrong) diagram of the human kidney cut open longitudinally. Answer the questions that follow. [5] i) Define excretion. ii) Name the functional unit of kidney. iii) Why does the cortex of the kidney show a dotted appearance? iv) Mention two functions of the kidney. v) Identify and mention the error in the diagram. b) Explain these terms. i) Active transport ii) Antiseptic iii) Nucleotide. iv) immunity v) cardiac cycle. [5] *******************

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