1. Besides organic matter (such as glucose), the products of photosynthesis also include:
- A. Carbon dioxide
- B. Water
- C. Oxygen
- D. Nitrogen
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Photosynthesis Rate - Quiz
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Besides organic matter (such as glucose), the products of photosynthesis also include:
Photosynthesis Rate - Quiz - Quiz Questions
Test your understanding of photosynthesis principles, limiting factors, and experimental phenomena.
2. In this experiment, if the bubble production rate suddenly slows down, the most likely reason is:
- A. Light intensity increases
- B. Environmental temperature drops from $30^\circ\text{C}$ to $5^\circ\text{C}$
- C. $\text{CO}_2$ concentration increases from $10\%$ to $50\%$
- D. The plant grows new leaves
3. If we turn off the lamp (light intensity is $0$), will bubbles still be produced?
- A. Yes, photosynthesis doesn't need light
- B. No, because there's no light energy to drive the chemical reaction
- C. Yes, because the plant is still respiring
- D. Cannot be determined
4. What is a 'limiting factor'?
- A. A factor in the environment that is most toxic to the plant
- B. The factor with the highest concentration/intensity in the environment
- C. The factor that is relatively most deficient, restricting the overall reaction rate
- D. A pathogenic factor carried by the plant itself
5. True or False: The main purpose of lowering greenhouse temperatures at night is to enhance photosynthetic efficiency.
- True
- False
6. [Calculation] If a plant releases $120$ bubbles in $10$ minutes under specific light, and each bubble represents $0.05\text{mg}$ of glucose, what is the glucose synthesis rate?
- A. $0.6\text{mg/min}$
- B. $1.2\text{mg/min}$
- C. $6.0\text{mg/min}$
- D. $0.05\text{mg/min}$
7. In an experimental design exploring 'the effect of light intensity on photosynthetic rate', which of the following is the **independent variable**?
- A. Number of bubbles produced per unit time
- B. Distance between light source and Elodea (or lamp power)
- C. Initial temperature of water in the apparatus
- D. Species and number of leaves of the Elodea
8. Elodea bubbles slightly increase in volume as they rise, mainly because:
- A. Photosynthesis continues inside the bubble
- B. Water pressure decreases with depth, reducing pressure on the bubble
- C. Oxygen continues to dissolve in the water
- D. Water temperature is higher at the top
9. To increase greenhouse vegetable yields in winter, which of the following practices is **unscientific**?
- A. Supplementing artificial light sources during the day
- B. Placing dry ice in the greenhouse to increase $\text{CO}_2$ levels
- C. Permanently maintaining greenhouse temperature above $50^\circ\text{C}$
- D. Using soilless cultivation to precisely control water and minerals
10. Regarding the significance of photosynthesis, which statement is incorrect?
- A. It is the main source of oxygen in the biosphere
- B. It converts solar energy into stable chemical energy
- C. It helps maintain carbon-oxygen balance in the atmosphere
- D. It only provides matter and energy for green plants themselves