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IMSO 2005 Science International — Theory II Question 14

IMSO Science · IMSO 2005 Science International — Theory II

Question 14

Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.

Answer the question 12–14 based on the following paragraph.

Plant loses water through the leaves by transpiration. An experiment was set up to measure the loss of water from the leaves. Prior to the experiment, pot and soil were covered using the plastic bag, as shown in the picture. Loss of water from plant could be regularly measured by weighing the potted plant.

What will happen if all the leaf surfaces were covered by clear plastic?

Question illustration
  1. The plant will die due to the lack of oxygen needed for their respiration.
  2. The transpiration will be disturbed due to the decline of pores needed for gas exchange.
  3. The plant will die because less water enters the plant.
  4. The photosynthesis will be affected because the clear plastic will prevent the sunlight from reaching the leaves
  5. The plant will die because the accumulation of carbon dioxide in leaves is toxic for plant.