Photosynthesis Factors

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Questions and Answers

What happens to the rate of photosynthesis if the amount of carbon dioxide available to a plant is increased?

  • It increases up to a point and then becomes constant (correct)
  • It decreases and then becomes constant
  • It decreases
  • It remains constant

Where does the light reaction take place in a chloroplast?

  • Stroma or matrix
  • Mesophyll cells
  • Chlorophyll
  • Thylakoid or grana (correct)

What is the result of the cyclic phosphorylation reaction in the light reaction?

  • Production of NADP
  • Production of ATP molecules (correct)
  • Reduction of NADPH
  • Release of oxygen

What is the shape of the organelles in the mesophyll cells of the palisade tissue where photosynthesis takes place?

<p>Disk-like (A)</p> Signup and view all the answers

What is the effect of high temperature on the rate of photosynthesis?

<p>It first increases and then decreases the rate of photosynthesis (B)</p> Signup and view all the answers

What is reduced to NADPH in the light reaction?

<p>NADP (A)</p> Signup and view all the answers

Where does the dark reaction or Calvin cycle take place?

<p>In the stroma of the chloroplast (B)</p> Signup and view all the answers

What is the product of the light-dependent reactions?

<p>ATP and NADPH (B)</p> Signup and view all the answers

What is the molecule that combines with carbon dioxide to form a 6-carbon compound?

<p>RuBP (Ribulose Bi-Phosphate) (B)</p> Signup and view all the answers

What is the byproduct of photosynthesis that is released into the atmosphere?

<p>Oxygen (B)</p> Signup and view all the answers

What is the energy currency of the cell that is produced during photosynthesis?

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

What is the pigment-containing structure where light-dependent reactions take place?

<p>Thylakoid membrane (D)</p> Signup and view all the answers

What is the primary function of chlorophyll in plants?

<p>To trap solar energy and convert it into chemical energy (B)</p> Signup and view all the answers

What happens when water enters into the guard cells?

<p>The stomata pore opens (A)</p> Signup and view all the answers

What is the range of wavelength in visible light?

<p>400-700 nanometre (C)</p> Signup and view all the answers

What is the name of the point where photosynthesis and respiration in a plant are exactly balanced?

<p>Compensation point (B)</p> Signup and view all the answers

What is the function of carotenoids in plants?

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

What is the by-product of photosynthesis that is released into the atmosphere?

<p>Oxygen (A)</p> Signup and view all the answers

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