Question

Refer to the setup and select the correct statements.

• A. Aim of this experiment is to prove that oxygen is released during photosynthesis.
• B. Aim of this experiment is to prove that CO₂ is released during photosynthesis.
• C. Hydrilla performs respiration and releases carbon dioxide.
• D. Hydrilla performs photosynthesis and releases oxygen.

Answer 1

Answer: (A), (D)

The correct options are
A Aim of this experiment is to prove that oxygen is released during photosynthesis.
D Hydrilla performs photosynthesis and releases oxygen.

When this setup is kept in sunlight, Hydrilla performs photosynthesis and releases oxygen which is collected in the test tube. This can be checked by introducing a burning splinter which will burst into flame.
The steel wool in the presence of oxygen undergoes oxidation reaction. Rust is the common name for the iron oxide, the brittle reddish brown substance that will form on metal.