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ICSE Prelims 2016 : Biology 2 (R. B. K. School (RBK), Mira Road)

5 pages, 91 questions, 89 questions with responses, 137 total responses,

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SECOND PRELIM EXAMINATION 2015-16 Std: X Date: 11 /01 /2016 Subject: BIOLOGY Marks: 80 Dur. : 2 Hr SECTION I (40 Marks) Attempt all questions from this Section Question 1 (a) (i) (ii) (iii) (iv) (v) (b) (i) (ii) (iii) (iv) (v) (c) (i) (ii) (iii) (iv) (v) (d) (i) (ii) (iii) (iv) (v) (e) (i) (ii) (iii) (iv) (v) Name the following: The pollutant responsible for acid rain. The ear ossicle attached to the oval window. The part of the brain associated regulation of body temperature. The hormone that stimulates thyroid. The process of conversion of ADP to ATP during photosynthesis. 5 State whether the given statements are True or False. If false, rewrite the false 5 statement correctly by changing the underlined word only. The alpha cells of the pancreas secrete insulin. Mitosis is a method of cell division taking place in the germinal cells of the body. The number of autosomes in man is 22. Penicillin obtained from a fungus is an example of an antibody. Plants that manufacture their own food are called Autotrophs. Pick out the odd term in the given group of terms and state the Common Category to which the remaining terms belong: 5 Loop of Henle, DCT, glomerulus, bowman s capsule, PCT Intelligence, memory, maintain balance, consciousness, voluntary actions Stroma, grana, fret, stoma, thylakoid Prostate gland, Seminal vesicles, tear gland, Cowper s gland, bulbourethral glands Black spot, ciliary body, Pupil, tympanum, cornea Rewrite and complete the following sentences by inserting the correct word in the space indicated. 5 _______ vaccine is given to build up immunity against polio. A fluid that occupies the larger cavity of the eye ball behind the lens is _______. Wooden doors warp during monsoons due to the process of ____________. The stage of mitosis during which the nuclear membrane disappears is________. The main nitrogenous waste excreted by kidneys is __________. Put the given group of terms in logical sequence based on the criteria given in the bracket. 5 oviduct, urethra, seminiferous tubule, vagina, uterus.( path of sperm) Karyokinesis, S-phase, Cytokinesis, G1 phase, G2 phase (Cell cycle) Intercellular space, mesophyll cells, stoma, xylem, substomatal chamber (Stomatal transpiration) Left auricle, lungs, pulmonary artery, right ventricle, pulmonary vein (Pulmonary circulation) Plasmolysis, water, Deplasmolysis, exosmosis, 10% NaCl, (Deplasmolysis) Page 1 of 5 (f) (i) (ii) (iii) (iv) (v) (g) (i) (ii) (iii) (iv) (v) Give the exact location of : Malphigian capsule chloroplast Ciliary body Adrenal Epididymus 5 Give the function of: 5 Prostate gland Coronary artery Iris of the eye Organ of corti Glomerulus (h) Given below is the sectional view of a dorsiventral leaf. Study the diagram carefully and answer the questions that follow. 5 (i) Label part numbered 2 & 5 (ii) Give the function of part 5. (iii) Name any one adaptation you can see in the morphology of the leaf above. (iv) Name one plant which shows the adaptation you have mentioned above. 2 1 1 1 Section II (40 Marks) Answer Any Four questions only from this section Question 2 (a) Study the diagram given below carefully and answer the questions that follow. (i) (ii) Name the blood vessels labeled A and B. Name blood vessel C. What is its special characteristic. Page 2 of 5 5 1 1 (iii) Give two reasons why the food laden blood from intestine goes to the liver and not to the heart directly. 1 (iv) Name blood vessels D and E and draw a neat diagram of the Cross section of E & D. 2 Label two parts that are different between them. (b) Draw a neat labeled diagram of the Male reproductive cell. Name it and label the following parts 1. Acrosome 2. Mitochondria 2 3. Axial filament 4.Head (c) Briefly explain the following terms. (i) Monohybrid cross (ii) Ultrafiltration 2 Question 3 (a) The diagram shown below is an experimental set up. Study the arrangement and answer the given questions. 5 (i) (ii) (iii) Name the physiological function of plant studied in this experiment. Write the balanced chemical equation to summarise this physiological function. Name the two factors necessary for this function which are missing in the above experimental set up. (iv) Name the Polysaccharide produced as the result of this function. (v) Name the test conducted to show the presence of a Polysaccharide in the experimental leaf. (v) With the help of labeled diagram show the expected result of the above test in the experimental leaf? (vi) What would be the observation of the test if the experimental set up was kept in green light. (b) 1 1 1 Give one point of difference between the following on the basis of the criteria given in the bracket: 3 (i) Cretinism and Dwarfism ( Symptoms ) (ii) Bleeding and Guttation (cause ) (iii) Meiosis and Mitosis (daughter cells) (c) Give scientific reason(i) Gametes have haploid number of chromosomes. (ii) The leaves of certain plants roll up during bright sunny day. Question 4 Page 3 of 5 2 (a) Given below is a diagram depicting the growth and development of embryo. Study the diagram carefully and answer the questions. (i) (ii) (iii) (iv) Name the part denoted by alphabets b, d, g and h. Name the cell released by part d and give its chromosome number. Name the contraceptive device that can be inserted at b. Name the surgical procedure carried out at g to prevent pregnancy? Explain how it will prevent pregnancy. (b) Draw neat labeled diagram of- 5 2 1 1 3 (i) Draw a neat labeled diagram of well hydrated onion peel cells and label its three important parts. 2 (ii) Draw a neat diagram of a chromosome and label two important parts. 1 (c) Expand the following. (i) ACTH (ii) ATP (iii) CNG (iv) NADP 2 Question 5 (a) The diagram shown below show the sectional view of a plant root. Study the same and answer the questions that follow. (i) Name the parts 1, 2, 3 and 4. (ii) Give two special characteristics of 3 that helps in absorption of water. (iii) What is indicated by the arrows shown in the diagram above? (iv) State the function of part 1. (v) Name any one force that operates in part 1 in order to perform the function you have stated above. Page 4 of 5 5 2 1 1 (b) Give the technical/ biological term for the following: (i) The point of contact between two neurons. (ii) Respiratory openings found on the stem of woody plants. (iii) The process of mixing of two different substances/molecules. (iv) The phase of the heart beat that is responsible for the pulse. (v) The condition in which a pair of chromosomes carry similar alleles. (vi) Eye defect in which old people are unable to see nearby objects. (vii) Cessation of menstrual cycle in females. (viii) The photosensitive pigment present in the cone cells of the retina. (ix) Absorption of useful substances from the glormerular filtrate . (x) Radiation of heat energy back into the earth s atmosphere by CO 2. Question 6 (a) Answer the following. (i) State two functions of Red Cross . (ii) Name and State Mendel s Second Law of Inheritance. (iii) What would be the effect of the following external conditions on the rate of transpiration and why? 1. A cloudy day 2. A windy day (iv) Name the autonomic nervous system responsible for 1. Stimulates Salivation 2. Dilation of pupil (b) Match the items in Column A with the items in Column B (1) (2) (3) (4) (5) Column A Tetanus Sleeping sickness Antiseptic Snake bite Disinfectant Column B (a) Boric acid (b) Antitoxin (c) Salvarson (d) Pentidsulph (e) formalin (f) Toxoid Page 5 of 5 5 1 1 2 1 5

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