Discover the World of Plant Parasitic Nematodes

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Questions and Answers

Which of the following is true about nematodes?

  • They are segmented worms
  • They feed on dead or decaying organic matter
  • They are predators
  • They are cylindrical in shape (correct)

What do saprophytic nematodes feed on?

  • Other nematodes
  • Bacteria and fungi
  • Plants and algae
  • Dead or decaying organic matter (correct)

What is the function of a stylet in plant parasitic nematodes?

  • To attack the above ground parts of the plant
  • To feed on other nematodes
  • To feed on plants and algae
  • To obtain nutrients from the host (correct)

Where do most plant parasitic nematodes feed?

<p>On or inside the roots (C)</p> Signup and view all the answers

What are the life stages of nematodes?

<p>Egg, larvae, juveniles and adults (B)</p> Signup and view all the answers

Which of the following is a characteristic of fungi?

<p>They have a cell wall made of chitin (B)</p> Signup and view all the answers

What is the main difference between yeasts and bacteria?

<p>Yeasts have a eukaryotic cell with a true nucleus (D)</p> Signup and view all the answers

What is the industrial importance of yeast?

<p>Yeast is important in the production of alcohol and wine (B)</p> Signup and view all the answers

Which of the following is not a component of the yeast cell wall?

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

How do yeasts reproduce sexually?

<p>By spores called ascospores (C)</p> Signup and view all the answers

Flashcards

What is the defining shape of nematodes?

Nematodes, also known as roundworms, are characterized by their cylindrical body shape.

What do saprophytic nematodes eat?

Saprophytic nematodes feed on dead or decaying organic matter, playing a vital role in decomposition.

What is the purpose of a stylet in plant-parasitic nematodes?

A stylet is a sharp, piercing structure used by plant parasitic nematodes to extract nutrients from the host plant.

Where do plant-parasitic nematodes typically feed?

Plant parasitic nematodes primarily feed on plant roots, either on the surface or inside the root tissue.

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What are the life stages of a nematode?

Nematodes go through several life stages: egg, larva, juvenile, and adult.

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What material makes up a fungal cell wall?

Fungi have cell walls made of chitin, a tough and durable substance that provides structural support.

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What's the key difference between yeasts and bacteria?

The main difference between yeasts and bacteria is that yeasts have a eukaryotic cell with a nucleus, while bacteria are prokaryotes.

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How are yeasts industrially important?

Yeasts are crucial in the production of alcohol and wine through fermentation, converting sugars into alcohol.

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What is NOT a component of the yeast cell wall?

Unlike other cell wall components like glucans and mannans, protein is not a primary component of the yeast cell wall.

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How do yeasts reproduce sexually?

Yeasts can reproduce sexually through the formation of spores called ascospores.

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