Life Processes - Nutrition

Grade 9 Science — Life Processes - Nutrition: 25 practice questions with instant scoring and explanations.

1. Photosynthesis occurs primarily in which organelle?
2. The general equation for photosynthesis is:
3. Plants are classified as:
4. Which type of nutrition involves feeding on dead organic matter?
5. A tapeworm is an example of a:
6. The light-dependent reactions of photosynthesis occur in:
7. Which organism is a heterotroph that consumes other organisms?
8. The main function of enzymes in digestion is to:
9. In humans, the digestion of starch begins in the:
10. The enzyme that digests proteins in the stomach is:
11. Which organ produces bile?
12. The primary site of nutrient absorption in the human digestive system is:
13. Villi in the small intestine increase the surface area for:
14. Which pigment is responsible for trapping light energy in photosynthesis?
15. The Calvin cycle in photosynthesis produces:
16. A fungus that feeds on dead wood is:
17. Which of the following is an example of holozoic nutrition?
18. The stomach produces gastric juices containing:
19. In photosynthesis, the light energy is used to produce:
20. Which of the following is NOT a type of heterotrophic nutrition?
21. The role of pancreatic juice in digestion includes:
22. In the duodenum, food is mixed with:
23. Chloroplasts in plant cells contain:
24. The energy released during photosynthesis is stored in the form of:
25. Which tissue in the human alimentary canal has the primary function of churning food?