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VIBGYOR HIGH First Term Examination AY 2020-21 BIOLOGY Section I Q. 1 [40] (Attempt all questions from this section.) A Name the following. [5] i. A group 1 of cells that perform a specific function. [1] ii. Diet 2 in which all principal constituents are present in proper quantity. [1] iii. The 3 salivary gland below the tongue. [1] iv. The 4 largest organ in our body. [1] v. The 5 first cervical vertebrae. [1] B State True or False and correct the false statement by changing the last [5] word only. i. Cell1 was discovered by Robert Brown. [1] ii. Proper 2 functioning of thyroid requires the mineral Iron. [1] iii. Large 3 intestine secretes no enzyme. [1] iv. Walls 4 of sclerenchyma cells have lignin. [1] v. Kwashiorkor 5 is caused by deficiency of vitamins. [1] Match the items given in column A with the most appropriate ones in [5] column B. C A B Plasma membrane a) Transport of water and minerals Xylem b) Flexibility Marasmus c) Temperature regulation Skin d) Deficiency of carbohydrates Cartilage e) Regulates movement of solutes f) Rigid i) ii) iii) iv) v) D Choose the odd one out and state the category of the rest. [5] i. Ribosomes, 1 Nucleus, Cell membrane, Endoplasmic reticulum, Cell wall [1] ii. Epithelial 2 tissue, Meristematic tissue, Nervous tissue, Muscular tissue, [1] 1 iii. Vitamin 3 A, Vitamin D, Vitamin B, Vitamin E, Vitamin K [1] iv. Sucrase, 4 Lactase, Lipase, Amylase, Peptidase [1] v. Immovable 5 joints, Pivot joint, Hinge joint, Gliding joint [1] E Diagram based question. F [5] i. Draw the diagram of intestinal villi and label epithelium, blood vessel, lacteal. [4] ii. Write any one adaptation of ileum for absorption of digested food. [1] Choose the correct alternative from the choices given. i. Protoplasm refers to [1] A. Cytoplasm C. Nucleus B. Cytoplasm and nucleus D. Nucleolus ii. Principal heat regulating centre in brain is located in A. Hypothalamus B. Cerebrum C. Medulla D. Cerebellum iii. In potato, starch is stored in [1] [1] A. Parenchyma C. Collenchyma B. Sclerenchyma D. Chlorenchyma iv. Ascorbic acid is [1] A. Vitamin A C. Vitamin C B. Vitamin B D. Vitamin D v. Gastric juice contains G [5] [1] A. Pepsin C. Trypsin B. Pepsin and HCl D. Trypsin and HCl Given below are a set of terms. In each case, arrange and rewrite each set so as to be in logical sequence. [5] i. Cell, Organelle, Organ, Tissue, Organ system [1] ii. Dendron, Axon, Cyton, Axon terminal, Dendrites [1] iii. Stomach, Oesophagus, Large intestine, Buccal cavity, Small intestine [1] iv. Thoracic, Lumbar, Cervical, Coccyx, Sacrum [1] v. Cement, Dentine, Pulp, Enamel [1] 2 H State the function of the following. [5] i. Centrosome [1] ii. Melanin [1] iii. Ciliated Epithelium [1] iv. Roughage in food [1] v. Human skeleton [1] [40] Section II (Attempt any four questions. Each question carries 10 marks) Q. 2 A Observe the diagram given below and answer the questions. [5] i. Label parts named A to E. [2.5] ii. Which layer of skin contains nerves ? [0.5] iii. Name the secretion of part labelled E. [1] iv. What is the function of adipose tissue layer of skin? [1] B Differentiate between the following pairs on basis of what is given in brackets. [5] i. Prokaryotic and Eukaryotic organisms (Organisation of genetic material) [1] ii. Leucoderma and Albinism (definition) [1] iii. Apical and lateral meristem (location) [1] iv. Micronutrient and macronutrient (requirement for plants) [1] True ribs and floating ribs(definition) [1] v. 3 Q. 3 A Give an example for each of the following. [5] i. Cell inclusion [0.5] ii. Unicellular organism [0.5] iii. Disaccharide [0.5] iv. Source of Vitamin A [0.5] v. Pigment in bile [0.5] vi. Solution to test presence of starch [0.5] vii. Pivot joint [0.5] viii. Inorganic compound in bone [0.5] ix. Source of heat production in body [0.5] x. Modified sebaceous gland [0.5] B Answer the following briefly. [5] i. What is piloerection? [1] ii. Suggest a precaution to prevent heat stroke. [1] iii. State any one function of protein. [1] iv. What is the significance of water as a constituent of food? [1] v. Write the dental formula of an adult human. [1] Q. 4 A Study the diagram and answer the questions. [5] i. Name the tissues labelled as a , b and the membrane labelled as d [3] ii. Name the fluid represented by c that is present in such joints. [1] iii. What is the function of the above-mentioned fluid? [1] B Diagram based question. [5] i. Draw an animal cell. [1] 4 ii. Label the following parts -Golgi body, Mitochondria, Nucleus, Endoplasmic [3] reticulum, Cytoplasm, Plasma membrane. iii. Name the organelle that helps in protein synthesis. [1] Q. 5 A Study the diagram and answer the questions. [5] i. Label the parts A,B,C. [1.5] ii. Name the different parts of the structure labelled C. [1.5] iii. In which part of the digestive system does digestion of protein start? [1] iv. In which part of digestive system does digestion of carbohydrates start? [1] B Explain the terms. [5] i. Vascular tissue [1] ii. Malnutrition i [1] iii. Calorie [1] iv. Peristalsis [1] v. Antagonistic muscles [1] Q. 6 A Give the biological terms. [5] i. Narrowing of blood vessel during cold weather. [0.5] ii. Part of nail that is visible as whitish half moon. [0.5] iii. Tissue that joins skin to underlying tissue. [0.5] 5 iv. Connective tissue that connects bone to muscle. [0.5] v. Poor vision in dim light due to deficiency of Vitamin A. [0.5] vi. Last part of backbone representing the rudimentary tail in human body. [0.5] vii. Hole at the back part of cranium through which spinal cord emerges. [0.5] viii. Poor skeletal growth due to calcium deficiency. [0.5] ix. The plastids which give colour to flowers. [0.5] x. Structural and functional unit of all organisms. [0.5] B Draw the diagram and answer the following questions. i. [5] Draw a neat labelled diagram of long bone and label spongy bone and marrow [3] cavity. ii. Name the membrane that covers the external surface of the bone. [1] iii. What is meant by marrow of a bone? [1] Q. 7 Observe the diagram given below and answer the following questions [5] A i. Identify the type of muscles A, B, C [3] ii. Which among these muscles are voluntary muscles? [1] iii. Which among these muscles never gets fatigue? [1] B Give reasons/account for the following. [5] i. Lysosomes are called as suicidal bags. [1] ii. It is important to have an optimal body temperature. [1] iii. Iodised salt is recommended in diet. [1] iv. There is no enzyme to digest vitamins. [1] v. Vertebral column is curved. [1] ***** 6
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