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Priestley's Experiment on Photosynthesis

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Priestley's Experiment on Photosynthesis

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Questions and Answers

What primary role did Joseph Priestley's experiment demonstrate about plants?

Plants absorb carbon dioxide from the air.

Plants produce heat during photosynthesis.

Plants need soil to survive.

Plants release oxygen into the atmosphere. (correct)

What was observed in the bell jar without the plant?

The plant was unable to thrive without sunlight.

The candle extinguished after a while. (correct)

The candle burned longer than in the jar with the plant.

The candle produced a larger flame than in the other jar.

Which part of the plant is primarily responsible for oxygen production according to Priestley's findings?

The stem of the plant.

The roots of the plant.

The flowers of the plant.

The leaves and green parts. (correct)

What environmental factor is necessary for plants to produce oxygen?

<p>Exposure to sunlight.</p> Signup and view all the answers

In Priestley's experiment, what determined the survival of the plant within the bell jar?

<p>The combined effects of light and oxygen release.</p> Signup and view all the answers

Study Notes

Priestley's Experiment

Joseph Priestley designed an experiment to investigate the role of plants in respiration and photosynthesis.
The experiment involved a plant and a lit candle enclosed in a bell jar.
He observed that the plant remained alive in the jar, and the candle continued burning.
This suggests plants release oxygen, which is essential for combustion.
In a separate bell jar, Priestley placed a lit candle without a plant.
The candle eventually extinguished, indicating the plant's role in providing oxygen.
The experiment highlights the importance of sunlight in oxygen production by plants.
The green parts of plants are essential for oxygen production during photosynthesis.

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Description

Explore Joseph Priestley's groundbreaking experiment that demonstrated the role of plants in respiration and photosynthesis. This quiz delves into how plants produce oxygen in sunlight and the significance of their green parts in this process. Test your understanding of the relationships between plants, oxygen, and combustion.