Try this before starting the Topic-Nutrition and Repiration

1. What is the meaning of the word ‘sapro’?
2. Name a parasitic plant and a parasitic animal.
3. Besides human beings, name two organisms that exhibit holozoic nutrition.
4. Name the two types of photoreceptor molecules present in plants.
5. Expand – ATP, NADP.
6. Name the products produced during light reaction that are utilized in the dark reaction.
7. Name the chloroplast containing tissue in the leaves.
8. Name the most common types of chlorophyll present in green plants.
9. Which molecule accepts CO₂ in the dark reaction?
10. Which is the ideal temperature for photosynthesis.
11. What is the process of obtaining food known as?
12. Name the excretory organs of grasshoppers.
13. How does grasshopper obtain food?
14. What is the approximate length of the human alimentary canal?
15. Which structures in amoeba are involved in ingesting food?
16. Name three glands associated with human digestive system.
17. Name the parts that provide enzymes in the digestive system of grasshopper.
18. Name the enzyme present in human saliva.
19. Which enzyme converts starch to maltose in human beings?
20. The stomach environment is acidic due to the presence of which substance?
21. What are the finger-like-projections in the small intestine known as?
22. What is the function of pepsin?
23. Which substance emulsifies fats present in food?
24. Hoe does the duodenal environment become alkaline?
25. What are the components of bile?
26. Which gland of the human digestive system secretes enzymes and hormones?
27. In what form is the energy released during respiration stored?
28. Hoe does exchange of gases take place in the tree trunk?
29. Where does anaerobic respiration take place in the human body?
30. Name two end products of anaerobic respiration.
31. What are extensions of epidermal cells of root known as?
32. Which process is responsible for respiratory gas exchange in leaves?
33. Name the respiratory organs in mussels.
34. Name the respiratory organ in earthworm.
35. Name the respiratory organs in housefly. .
36. Which structure separates nasal cavity from the oral cavity?
37. Which structure prevents the trachea from collapsing?
38. How is the thoracic cavity separated from the abdominal cavity?
39. Name the structure that prevents entry of food into the windpipe.
40. What is the protruding cartilage of voice box in males known as?
41. How many vocal cords are present in the larynx?
42. What is the rate of breathing in human beings under normal conditions?
43. In which cavity are the lungs present?
44. How is oxygen transported from lungs to other parts of the body?
45. In which disease is the area for gaseous exchange in the lungs reduced?
46. Which part of the root is involved in exchange of respiratory gases?
47. Name a unicellular organism that respires anaerobically.
48. Which ‘juice’ is involved in the complete digestion of food in the small intestine?
49. Name the enzymes present in pancreatic juice.
50. How many salivary glands are associated with the human digestive system?