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The procedure was to place Elodea under heat lamps and count the bubbles of photosynthesis in test tubes. A higher count of bubbles showed a higher rate of photosynthesis. The variables were photosynthesis and the distance of the light source.
- Why do Elodea produce bubbles?
- Why is counting the bubbles A good way to determine the rate of photosynthesis?
- What were the bubbles given off by Elodea in this experiment?
- What do these bubbles indicate in photosynthesis?
- Why is elodea important for lake ecosystems?
- Why have these bubbles appeared in the set up?
- What do the bubbles indicate?
- How does light intensity affect the rate of photosynthesis in Elodea?
- How does temperature affect the rate of photosynthesis in Elodea?
- Why Elodea is used for photosynthesis experiment?
- What gas did the Elodea plant give off in the light?
- What molecules make up the bubbles you count?
- Why does the number of bubbles differ in each leaf?
- How does Elodea measure the rate of photosynthesis?
Why do Elodea produce bubbles?
As photosynthesis occurs, elodea plants pass the produced oxygen from leaves to stem. Some oxygen escapes from the leaves to form oxygen bubbles in the water but the majority escapes from the stem as a result of larger intracellular air spaces.
Why is counting the bubbles A good way to determine the rate of photosynthesis?
Aquatic plants can be used to demonstrate oxygen evolution in the process of photosynthesis. ... These bubbles can be counted and the rate of bubbling can serve as an indication of the rate of photosynthesis. When the light intensity is increased, the rate of bubble production should increase.
What were the bubbles given off by Elodea in this experiment?
Photosynthesis uses Carbon Dioxide and water which generates glucose and oxygen. We can see the oxygen released by photosynthesis as bubbles forming on the leaves of Elodea. Student Objectives: Students will be able to retell the process of plant transpiration through an experiment with Elodea.
What do these bubbles indicate in photosynthesis?
Tiny bubbles rising from an underwater plant's leaves are oxygen. In a process called photosynthesis, plants use light energy to make food and oxygen from carbon dioxide and water. Though plants do use a small amount of this oxygen, most is released as waste.
Why is elodea important for lake ecosystems?
Ecological Importance. Elodea provides habitat for many small aquatic animals, which fish and wildlife eat. Geese, ducks, and swans are particularly attracted to this plant. Elodea is an excellent oxygen producer and frequently used by fish to protect fry.
Why have these bubbles appeared in the set up?
A glowing splinter bursts into the flame shows the presence of oxygen. Observation: Gas bubbles in a test tube. Result: Presence of oxygen. Conclusion: Formation of gas bubbles prove that oxygen is produced by the green plants during photosynthesis.
What do the bubbles indicate?
The formation of bubbles when two liquids are mixed usually indicates that a gas has formed. A gas can also be formed when a solid is added to a solution.
How does light intensity affect the rate of photosynthesis in Elodea?
The rate of photosynthesis is a function of light intensity. ... The rate of photosynthesis in Elodea depends on the intensity of light. With increasing, water pollution levels light that reaches aquatic plants such as Elodea significantly decreases thus leading to lesser light intensity underwater (Denchak, 2018).
How does temperature affect the rate of photosynthesis in Elodea?
When the temperature rises the rate of photosynthesis rises also. There is an optimum temperature at which the rate of photosynthesis is maximum. Beyond this temperature, the reaction quickly comes to a halt. Place a pond weed Elodea upside in a test tube containing water at 25°C.
Why Elodea is used for photosynthesis experiment?
This North American pondweed is widely recommended for demonstrating oxygen formation during photosynthesis. Elodea is cheap and easy to grow, but other pondweeds can also be used.
What gas did the Elodea plant give off in the light?
What gas did the elodea plant give off in the light? Plants use carbon dioxide and produce oxygen gas during photosynthesis.
What molecules make up the bubbles you count?
They might just as well have been bubbles of nitrogen or carbon dioxide, or some other gas from some other process that was occurring in the plants instead of photosynthesis. Nevertheless, since the plants were exposed to light, the bubbles were most likely made of oxygen.
Why does the number of bubbles differ in each leaf?
Lower surface of the leaf has more holes (stomata) than that of upper surface. 2. Cells at lower surface of the leaf have faster photosynthetic rate to release oxygen. ... Lower surface of leaf has a chemical that may react with water to form air bubbles.
How does Elodea measure the rate of photosynthesis?
The rate of photosynthesis will be measured by counting the number of oxygen bubbles produced by the Elodea plants in each 2-minute trail. After completing a number of experiments, students and teachers will discuss their findings in relation to macro-level factors that affect ecosystem health and climate change.
