Question

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Answer 1

In the setup of photosynthesis, the gas collected is not pure oxygen because it also contains water vapor in addition to oxygen.

What are the gases produced during photosynthesis in plants?

Photosynthesis is a process by which green plants produce their food from carbon dioxide and water releasing oxygen as by-product.

In the setup for photosynthesis in a seaweed plant, oxygen is collected above the tube. Also, some water vapor collects above the tube.

Therefore, the gas collected is not pure oxygen because it also contains water vapor in addition to oxygen.

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Answer 2

Photosynthesis is measured by the amount of oxygen produced. Counting pondweed bubbles or using the Audus apparatus to determine the amount of gas evolved over time can both be used to quantify oxygen.

What is photosynthesis?

Photosynthesis is the conversion of light energy into chemical energy by green plants and other organisms. Light energy is collected and utilised by green plants during photosynthesis to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic molecules.

The forming bubbles are either counted or recorded using light barriers, which is difficult due to their small size and frequently changing ascent velocity. When gas bubbles produced during photosynthesis by aquatic plants leave the plants, they produce different sound pulses.

B. Because the gas collected contains water vapor in addition to oxygen, it is not pure oxygen.

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