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.
Why is elodea used to measure photosynthesis?
Since oxygen is much less soluble in water than is carbon dioxide, the water quickly saturates with oxygen and bubbles form. The number of bubbles released per minute measures the rate of photosynthesis.
Why is pondweed used for photosynthesis experiments?
Like other green plants, pond weed can make sugar from carbon dioxide and water. … Red light is more easily used by the pond weed than most other colours. This process of making sugar and oxygen is called photosynthesis. Pond weed uses the carbon dioxide which is dissolved in the water it is in.
Why is an aquatic plant used in the experiment?
Answer: to prove that oxygen is necessary for the photosynthesis. Because hydrilla is a small plant and hence easy to handle and also it is a aquatic plant so it is able to breath in water whereas land plants are not.
What is the purpose of elodea?
Elodea provides shelter and food for many aquatic insects, crustaceans and fish. Elodea is often used in decorative purposes in the freshwater aquariums. Elodea quickly grows in waters rich in nitrogen and phosphorus. Rapid growth of elodea reduces oxygen content in the water and leads to fish kills.
What gases are given off by elodea?
They produce carbon dioxide during cellular respiration.
Does elodea produce oxygen?
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 sodium bicarbonate used in photosynthesis experiment?
The function of the sodium bicarbonate in this experiment, was providing carbon dioxide for photosynthesis to occur. Light independent reactions take part in the stroma. … This is because when water is boiled, carbon dioxide is given off, and without carbon dioxide photosynthesis will take a longer time to happen.
How do you do photosynthesis experiment?
Use a measuring spoon to scoop out 1/8 teaspoon of baking soda, and fill your measuring cup with 300 milliliters of water. Mix the baking soda into the water to create your bicarbonate solution. When the baking soda dissolves in the water, it releases carbon dioxide. This will be used by the spinach for photosynthesis.
What is the role of KOH in photosynthesis experiment?
– The Potassium Hydroxide (KOH) absorbs carbon dioxide which is necessary for photosynthesis.
What is the aim of Hydrilla experiment?
The aim of the experiment: To prove that oxygen is evolved in green plants during photosynthesis. Here use Hydrilla plants. Hydrilla plants are water algal plants. These plants can bring out photosynthesis even they are surrounded by water.
Which plant is used in photosynthesis experiment?
Introduction. Egeria densa, also known as Elodea densa because of its previously incorrect classification in the Elodea genus, is the most popular aquatic plant used to teach photosynthesis in the classroom.
Which plant is used in Hydrilla experiment?
Questions and answers related to the experiment
To prove oxygen is evolved by green plants during photosynthesis. Why Hydrilla plants are used in this experimental setup? Ans. Hydrilla plants are aquatic algal plants.
What are some positive uses of Elodea?
Provides excellent cover for aquatic insects and fish and serves as a source of food for various pond wildlife. One of the few aquatic plants that provides underwater habitat during the winter months. Modest amounts of elodea are generally considered beneficial for the pond ecosystem.
How do you control Elodea?
Elodea can be removed by raking or seining it from the pond, but will re-establish from any remaining fragments and roots. Fertilization to produce a phytoplankton or algal “bloom” prevents the establishment of most bottom rooted aquatic weeds and produces a strong food chain to the pond fish.
Why is it important to have Elodea in an aquarium?
Ecological Importance. Elodea provides habitat for many small aquatic animals, which fish and wildlife eat. … Elodea is an excellent oxygen producer and frequently used by fish to protect fry.