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ICSE Class IX Mid-term 2024 : Biology

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GEMS Modern Academy, Dubai
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SECOND TERM EXAMINATION -2023 BIOLOGY GRADE: 9 DATE: 17.11.2023 TIME: 2 HOURS MARKS: 80 [The time stated above is the time allowed for writing the examination. In addition 15 minutes will be the time given for reading the question paper] General Instructions: 1. There are 2 sections in this question paper SECTION A and SECTION B. 2. Attempt all questions from section A. 3. Attempt 4 questions out of 6 questions in section B. 4. The intended marks for each question is given in the brackets [ ]. SECTION A (40 marks) Question I MULTIPLE CHOICE QUESTIONS [15] 1. Which label indicates rhizoids? Page 1 of 11 2. Which of the following features are present in organisms of Kingdom Protista i. they have cilia and flagella for movement ii. They have a well-defined nucleus. iii. unicellular organisms iv. All are autotrophs only A. i, ii and iii only B. ii, iii and iv only C. i, iii and iv only D. i, ii and iv only 3. Which of them is the correct combination A. Kingdom Protista- Multicellular eukaryotes B. Kingdom Monera Multicellular prokaryotes C. Kingdom Fungi Unicellular or multicellular prokaryotes D. Kingdom Monera- unicellular Prokaryotes 4. The diagram shows an experiment to investigate the balance between photosynthesis and respiration. In which of the following tubes respiration will occur but not photosynthesis. A. B, C and D B. A, B and C C. B,C and D D. A, B and D 5. Identify the wrong statement from the following A. Glycolysis occurs in cytoplasm without the requirement of oxygen B. Glycolysis occurs in mitochondria in the absence of oxygen C. Kreb s cycle occurs in mitochondria in the presence of oxygen D. Kreb s cycle releases carbon dioxide and water due to cellular respiration Page 2 of 11 6. Identify the Kingdom Plantae Do they have nuclear membrane No A Yes Unicellular Multicellular Yes B Without cell wall Kingdom Animalia Perform photosynthesis C With cell wall Do not perform photosynthesis D 7. Which of the following features can be seen in Phylum Platyhelminthes i. have mouth but no anus iii. they have true body cavity ii. Have dorsoventrally flattened body. iv. bilaterally symmetrical A. i, ii, iii B. i. ii, iv C. ii, iii, iv D. i, iii, iv, Page 3 of 11 8. Following figure shows an employee is working on a computer in her office.Parts of her body are labelled. In which of the labelled parts of her body is cellular respiration occurring as she types on the computer? A. Only her hands C. Only her hands, head and chest B. Only her hands and head D. All parts of her body 9. 10. Identify the correct sequence of passage of air in our body A. Nose -Trachea -bronchii bronchioles alveoli B. Nose - Trachea alveoli- bronchii bronchioles C. Nose - Trachea bronchii alveoli - bronchioles D. Nose bronchii- trachea bronchioles alveoli 11. Function of epiglottis is A. Prevents air from going into the trachea B. Allow the food to enter trachea. C. Filters the air before moving into trachea D. Prevents food from entering the trachea. Page 4 of 11 12. Observe the following figure showing the structure of an alveolus Identify the labels. A B C D A Oxygenated blood Deoxygenated blood Deoxygenated blood Oxygenated blood B Carbon dioxide Carbon dioxide Oxygen Oxygen C Oxygen Oxygen Carbon dioxide Carbon dioxide D Deoxygenated blood Oxygenated blood Oxygenated blood Deoxygenated blood 13. Trypsin is added to a cloudy suspension of protein in a test tube and kept at 370C. After eight minutes, the suspension changes from cloudy to transparent. Which product or products will now be present in the test tube? A. Amino acids B. Fatty acids C. Glycerol D. Simple sugars 14. Among diseases you studied, which of the following statements are correct for kwashiorkor i. ribs are prominent ii. No wasting of muscles iii. occurs due to deficiency of protein diet A. i and ii B. ii and iii C. i and iii D. i, ii and iii 15. Trachea has C shaped cartilaginous rings to A. provide more space for air to enter so that we can inhale more air. B. keep the trachea in dilated position and prevent it from collapsing. C. To support exchange of gases in trachea. D. To give shape to the trachea. Page 5 of 11 Question 2 A. Observe the following experimental set up and answer the questions. The pyrogallic acid taken in the small container absorbs oxygen from the air. 1. Write the aim for the experiment shown. [1] 2. Name the process that is investigated in the experiment. [1] 2. Name the gas in the bubbles labelled A. [1] 3. If the solution in the test tube is replaced by lime water, what could be your observation after a few hours of the experiment? [1] 5. Write the word equation for the process investigated. [1] B. Give a scientific term for the following [5] 1. Plants with naked seeds 2. Pigments that give colour to bile 3. Group of organisms that have cell wall made of chitin 4. Structure that is common for passage of food and air 5. Polysaccharides that form the fibres in our diet Page 6 of 11 C. Differentiate between the following based on the criterion mentioned in brackets. [5] 1. Monosaccharides and disaccharides [meaning] 2. Aerobic and anaerobic respiration [energy produced] 3. Pyloric sphincter and oesophageal sphincter [location] 4. Vital capacity and total lung capacity [definition] 5. Cold blooded animals and warm blooded animals [meaning] D. Identify the odd one out. State the group to which others belong. [5] 1. Bryophyta, pteridophyta, spermatophyta, thallophyta 2. Jejunum, rectum, ileum, duodenum 3. Vitamin A, Vitamin D, Vitamin C, Vitamin E , 4. Glucose, galactose, sucrose, fructose 5. Parotid gland, gastric glands, submandibular gland, sublingual gland E. Copy the table and fill in the blanks on the table. Nutrients Function / importance [5] Deficiency Disease / Symptoms Vitamin A Maintains proper eyesight 2 1 3 Scurvy Vitamin D Maintain calcium and phosphorus 4 level in the body 5 Essential for normal clotting Delayed blood clotting SECTION B [Attempt any FOUR Questions from this section] QUESTION 3 A. Define the following words. [5] 1. Balanced diet 2. Peristalsis 3. Malnutrition 4. Hermaphrodites 5. Tidal volume Page 7 of 11 B. Identify the specific group of organisms to which each of the following figures belong to. State one identifying feature for each of the groups you identified. [5] 1 2 4 3 5 Question 4 A. Observe the following figure and answer the questions given. 1. Label the parts Z, and X [1] 2. Name the macromolecule digested in structure X. [1] 3. How the digestion of food in structure X is different from the digestion in structure Z in terms of pH needed? What is the cause of that difference? [1] 4. Enzymes in structure X are produced in inactive form- Give a scientific reason for this. [1] 5. State the contribution of the structure W in digestion of fats? [1] B. Give a scientific reason for the following statements. 1. One should not sleep under the trees in the nights 2. Vitamins need not undergo digestion 3. Snakes are included in reptiles even though they do not have limbs 4. Gaseous exchange do not take place in trachea, bronchii and bronchioles 5. All vertebrates are chordates but not all chordates are vertebrates Page 8 of 11 [5] QUESTION 5 A. Observe the following experiment and answer the questions. A [5] B 1. Write the aim for the set up shown in the figure above. 2. Write your observations after you observe the set up that was kept for week. 3. Why do you think the dead seeds are used in the experiment? 4. Which of the above experiments is the control? Explain your choice. 5. What precaution to be taken in this experiment to get accurate and reliable results? B. 1. Draw a labelled diagram of cross section of human premolar tooth. [3] 2. How the chewing by teeth supports the process of digestion in our body? [2] Page 9 of 11 QUESTION 6 A. Following Figure shows the arrangement of teeth in the human jaw 1. Identify the teeth A and C. [1] 2. State the function of teeth labelled C. [1] 3. Relate the shape of following teeth to their function [2] i. Teeth A ii. Teeth B 4. Based on the diagram write the dental formula for an adult human. [1] B. 1. Draw a labelled diagram of a villus. [3] 2. List any two adaptations of villi which support their functions. [2] Question 7 A. 1. Describe the role of pancreas in digestion of proteins and fats? [3] 2. How the following animal groups are adapted for their life in their natural habitat. State any two adaptations for each of the groups. a. Fishes [2] b. Aves 3. B. Give one scientific reason for the following statements. 1. Right lung is larger than left lung 2. At high altitudes we breathe deeper and faster 3. Residual volume is very crucial among the lung capacities 4. Lung capacities are higher in young athlete than a old age person 5. Overcrowding in a place leads to breathing problems Page 10 of 11 [5] Question 8 A. Identify the animal groups A to E with the help of clues given in the following table. State one example fo reach of the groups you identified. No = Absent Yes = Present [5] Animal Group Cold blooded A B C D E No Yes No Yes Yes Breath by lungs Yes Yes Yes Yes No Skin covered by scales No Yes No No Yes Feed the young animal Yes No No No No Egg laying No Yes Yes Yes Yes Four legs Yes Yes No Yes No B. Observe the following figure and answer the following questions 1. Name the labels A to D. [2] 2. How the structure A is adapted to filter the air that is breathed into the lungs? [1] 3. What change does structure B undergo when we exhale the air out of our body? [1] 4. How the structure E support the process of inhalation and exhalation? [1] EXTRA B. Differentiate between the following groups of organisms. c. Phylum Platyhelminthes and Phylum Annelida [body cavity] Page 11 of 11 [3]

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