Question

 If a potted plant and a dish containing potassium hydroxide are covered by a sealed container are made up of glass are kept in sunlight for a week, then: *

1 point

a] Plant will grow taller

b] Leaf turn yellow due to no photosynthesis

c] Leaf turn green due to excess photosynthesis

d] Leaf turn yellow due to no oxygen in jar

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Answer 1

Answer:

B

Explanation:

As KOH absorbs CO2 photosynthesis will not occur and therefore the plant becomes yellow.

Answer 2

Answer:

If a potted plant and a dish containing potassium hydroxide are covered by a sealed container are made up of glass are kept in sunlight for a week, then: leaf will turn yellow due to no photosynthesis.

Explanation:

• Potassium hydroxide is used because it plays the role of absorption of carbon dioxide from the plant surrounding.
• KOH absorbs the carbon dioxide released by the germinating seeds and partial vacuum is created because of the loss of carbon dioxide in the flask.
• Due to absence of CO2, the leaf falls to produce starch which proves that carbon dioxide is necessary for photosynthesis.

Hence, if a potted plant and a dish containing potassium hydroxide are covered by a sealed container are made up of glass are kept in sunlight for a week, then: leaf will turn yellow due to no photosynthesis.