Zadanie 2a
Calculate the mean rate of oxygen bubble production at 12 cm.
- Materiał graficzny
Testing limiting factors in photosynthesis
Design controlled investigations of light, temperature or carbon dioxide and predict their effects on photosynthetic rate.
Tę umiejętność sprawdza 8 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 8 Otwórz w wyszukiwarce z filtrami
Zadanie 2b
State the relationship between light intensity and photosynthetic rate supported by these results.
- Materiał graficzny
Zadanie 2c
(i) Suggest why a water-filled beaker is placed between the lamp and the plant tube. (ii) Identify two variables that should be kept constant.
- Materiał graficzny
Zadanie 6
A blue carbon-dioxide indicator becomes yellow when dissolved carbon dioxide accumulates. Identical sealed jars start blue. Which treatment is most likely to retain the blue colour if illumination is sufficient for net photosynthesis? A. An aquatic plant and a…
Zadanie 3a
Outline the effect of extra carbon dioxide on growth of the red alga.
- Materiał graficzny
Zadanie 7
Temperature is held constant while plants are tested at two light intensities. At 0.12% CO₂ under dim light, which change is supported as a way to increase photosynthesis by the results? A. Conclude that no environmental factor limits the rate B. Increase…
- Materiał graficzny
Zadanie 9
Plants are supplied with sufficient mineral nutrients and kept at their optimum temperature. CO₂ remains at ambient concentration. Which factor could limit the plateau reached at a light intensity of 360 units? A. Insufficient light at that point on this curve…
- Materiał graficzny
Zadanie 9
At 320 µL L⁻¹ CO₂ on the low-illumination curve, which factor is shown to limit the rate? Temperature is held constant. A. Carbon dioxide alone, because adding more immediately increases that curve B. Light availability, because stronger illumination increases…
- Materiał graficzny