STU1043 Introduction to Plant Physiology LU5: Respiration in Plant 1 Quiz

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What are the waste products of respiration in plants?

Water and CO2

When does respiration in plants occur?

At night and day

What are the principal respiratory substrates in cells of higher plants?

Carbohydrates

What is the role of oxygen in respiration?

<p>It is reduced to form water</p> Signup and view all the answers

Which of the following is an example of a soluble sugar in plant cells?

<p>Sucrose</p> Signup and view all the answers

What happens to carbohydrates during respiratory metabolism?

<p>They are partially or completely oxidized</p> Signup and view all the answers

During which stage of respiration do succulent plants utilize organic acids as respiratory substrates?

<p>Fermentation</p> Signup and view all the answers

What is the end product of glycolysis in plants?

<p>Pyruvate</p> Signup and view all the answers

In which organelle does the Krebs Cycle occur in plant cells?

<p>Mitochondria</p> Signup and view all the answers

What is the total ATP produced from aerobic respiration in plant cells?

<p>38 ATPs</p> Signup and view all the answers

Under which condition does fermentation occur in plant cells?

<p>In the absence of oxygen</p> Signup and view all the answers

What is the role of organic acids like malic acid in succulent plants during the night?

<p>Act as respiratory substrates</p> Signup and view all the answers

What happens to pyruvate before it enters the Krebs Cycle in plant cells?

<p>It is converted into acetyl-CoA</p> Signup and view all the answers

Where does glycolysis occur in plant cells?

<p>Cytosol</p> Signup and view all the answers

What is the principle form in which organic materials are translocated within plants?

<p>Sucrose</p> Signup and view all the answers

Which process generates a net production of 2 ATP in plant cells?

<p>Glycolysis</p> Signup and view all the answers

What is the primary function of respiration in plants?

<p>To break down stored food and obtain energy</p> Signup and view all the answers

In which organelle does the Krebs Cycle occur in plant cells?

<p>Mitochondria</p> Signup and view all the answers

What are the most important respiratory substrates among carbohydrates in plant cells?

<p>Sucrose and fructose</p> Signup and view all the answers

When does respiration in plants occur?

<p>Both at night and day</p> Signup and view all the answers

What happens to carbohydrates during respiratory metabolism?

<p>They are oxidized to CO2 and H2O</p> Signup and view all the answers

Which stage of respiration involves the addition of acetyl-CoA to oxaloacetate to produce citrate, followed by a loss of CO2?

<p>Krebs Cycle</p> Signup and view all the answers

In which condition does fermentation occur in plant cells?

<p>When oxygen is absent</p> Signup and view all the answers

What is the end product of glycolysis in plant cells?

<p>Pyruvate</p> Signup and view all the answers

Which process generates a net production of 2 ATP in plant cells?

<p>Glycolysis</p> Signup and view all the answers

What are the waste products of respiration in plants?

<p>Carbon dioxide and water</p> Signup and view all the answers

Where does glycolysis occur in plant cells?

<p>Cytoplasm</p> Signup and view all the answers

What is the role of oxygen in respiration?

<p>To produce energy</p> Signup and view all the answers

Which of the following is an example of a soluble sugar in plant cells?

<p>Sucrose</p> Signup and view all the answers

When do succulent plants utilize organic acids as respiratory substrates?

Signup and view all the answers

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