2nd TERM Worksheet (2023-2024) SUBJECT GRADE BIOLOGY 9 DATE: NAME: I. Fill in the blanks:- 1. There are ________ different amino acids in animal proteins. 2. The organelles which contain this green colour are called ___________________. 3. Plants producs ________________ gas during darkness. 4. Small molecules of digested food like glucose and amino acids are absorbed into the blood through the part of the small intestine called the ___________________. II. Choose the correct option for each of the following question. 5. Have four or five cusps; have two or three roots a. Incisor b. Canine c. premolar d. Molar ( ) 6. The tooth above the gum is covered by a very hard layer of ________. a. Carbon b. enamel ( ) c. gold d. silver 7. a. b. c. d. How do bile salts help with digestion? They break large droplets of fat into small ones. They contain lipase, which digests fats. They kill bacteria in the food. They provide an acidic environment. ( ) 2ND TERM EXAM 2023-2024 1 8. The diagram shows a section through a leaf Which parts provide water for the leaf and release most water from the leaf? a. Q and R b. P and S c. R and S d. R and P 9. Identify the source of calcium. a. b. c. d. ( ) Cheese Milk Hard water All of the above 10. Which nutrients are digested in the mouth and stomach? a. A b. B c. C d. D 2ND TERM EXAM 2023-2024 2 11. What are peptides? _________________________________________________________________ _________________________________________________________________ 12. What is balanced diet? ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ 13. For each type of molecule shown, use words from the list to complete the table to show the type of enzyme that digests it and the products of digestion. Structure Type of Enzyme Product of molecules digestion A. Protein B. Starch 14. Write down a short note on Xylem. ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ 15. Write down the functions of stomata. ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ 16. What are diseases caused by Vitamin C. ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ 2ND TERM EXAM 2023-2024 3 17. In the graph below graph showing the average daily change in the carbon dioxide concentration 1 meter above an agricultural crop during the summer. Using your knowledge of photosynthesis and respiration, explain the changes in the carbon dioxide concentration. ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ All the best for your exam Important Note: Go through all the diagram and labels. Go through all the chapters (according to portion) and tables, graphs for definitions / uses etc for fill in the blanks, match the following, one mark answers etc. Go through all the mid of the chapter question answers and end of the chapter question answers (Exam-style questions). 2ND TERM EXAM 2023-2024 4