Photosynthesis and Stomata Function Quiz
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Questions and Answers

What is the function of stomata in plants?

  • Collecting raw materials
  • Producing organic acids
  • Exchange of gases (Oxygen and Carbon dioxide) (correct)
  • Synthesizing food

How do desert plants utilize stomata differently from other plants?

  • They keep stomata closed during the night. (correct)
  • They produce organic acids at night for photosynthesis.
  • They only take up CO2 during the day.
  • They open stomata only at night for gas exchange.

What controls the opening and closing of stomatal pores in plants?

  • Turgidity of guard cells (correct)
  • Amount of sunlight
  • Presence of water vapour
  • Chlorophyll concentration

Why do guard cells become turgid during photosynthesis?

<p>To increase osmotic pressure (A)</p> Signup and view all the answers

What is the primary function of chlorophyll in photosynthesis?

<p>Absorbing sunlight (C)</p> Signup and view all the answers

Which part of the plant is responsible for the translocation of food to all parts of the plant body?

<p>Phloem (C)</p> Signup and view all the answers

What is the main function of stomata in plants?

<p>Transpire water (D)</p> Signup and view all the answers

Which structural component in a leaf is directly involved in regulating the opening and closing of stomata pores?

<p>Guard cells (C)</p> Signup and view all the answers

What happens to the osmotic pressure within guard cells at night?

<p>Decreases (C)</p> Signup and view all the answers

What causes the stomatal pore to close?

<p>Exosmosis of water from guard cells (A)</p> Signup and view all the answers

Which theory states that stomata open as a result of increased sugar production during photosynthesis?

<p>Sugar concentration theory (D)</p> Signup and view all the answers

What causes the stomata to close according to the K+ ion concentration theory?

<p>Decreased K+ ion concentration (D)</p> Signup and view all the answers

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