Superior Lalazar Public School Thana M.K.D Agency 2nd Term Examination For The Year .2013 Marks:65 Biology ‘‘9th’’ Marks 12 Name: _______________________________ Time:3hrs Time allowed: 15 minutes Roll No: _____________Sec:_______________ _____________________________________________________________________________________ Note:- There are THREE sections in this paper i.e. A,B,C . Attempt section –A on the same paper and return it to the superintendent within the given time. No marks will be awarded for cutting , Erasing or overwriting Section A Q 1. Write the correct option i.e. A, B, C, D in the empty box provided opposite to each part i. ii. iii. iv. v. vi. vii. viii. ix. x. xi. xii. Viruses are studied in ____________ branch of biology A. Zoology B. Microbiology C. Virology D. Both B and C ___________ is a branch of biology which give information about chromosomes. A. Embryology B. Genetics C. Biotechnology D. Cytology Unicellular and simple organisms are usually made up of __________ cell. A. Prokaryotic B. Eukaryotic C. Complex D. None Cell wall is only limited to ____________ cells A. Animal B. Brassica compestris C. Plants D. Both B and C It is _________ which facilitate movement of materials from outside to inside the cell. A. Cell wall B. Golgi bodies C. Ribosomes D. None Chromoplast is a plastid it helps in _______________. A. Photosynthesis B. Respiration C. Transport of materials D. None Transportation of materials against concentration gradient is termed as A. Active transport B. Filtration C. Osmosis D. Passive transport Leaves of plants are rigid because of A. Diffusion B. Plasmolysis C. Osmosis D. Turgor Structure of enzymes reveals that they are A. Lipids B. Sugars C. Protein D. Vitamin Enzymes speed up a reaction by __________ A. Taking part in reaction B. Lowering activation energy C. Increasing activation energy D. Both A and B A damaged cell is repaired by ____________ process in the body. A. Meiosis B. Operation C. Mitosis D. Laser therapy An error in meiosis leads _________in A. Blindness B. Genetic disorder C. Paralysis D. none Section B Time allowed for Sec B and C Marks 32 2:15 minutes Q 2. Attempt any eight parts, all the parts carry equal marks. i. ii. iii. iv. v. vi. vii. viii. ix. x. xi. Cell wall is the outermost layer of plant cell but still doesn’t facilitate movement of materials. Why? Differentiate between simple and compound tissue, also give example of each type. Cell placed in isotonic solution becomes flaccid. Why? Discuss passive transport, give its examples. How hypothesis is formulated. Write some benefits of binomial nomenclature What is fluid mosaic model of cell membrane? Why elevated temperature affect enzyme activity. Give solid reason. Write a short note on enzyme. What are the key differences between mitosis and meiosis? What is chromosome? Section C Marks 21 Note: Attempt any three questions, Draw neat and labeled diagram if required. Q 3. a. write a note on any four cell organelles with labeled diagram 4 b. 3 differentiate between eukaryotic and prokaryotic cell. Q 4. a. write a detailed note on mitosis. 4 b. 3 discuss the branches of biology. Q 5. a. write in detail about meiosis. 5 b. 2 what are the factors affecting enzyme activity. Q 6. a. discuss plant tissues in detail. 4 b. 3 write a note on virus.