Parasitology Lab Techniques: Helminthes

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Questions and Answers

Tremaroda is a type of Platyhelminths.

True (A)

Cestode is a type of roundworm.

False (B)

Helminthes are a type of parasitic worm.

True (A)

Nematoda are classified as flatworms.

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

Platyhelminths have a leaf-like shape.

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

Tape worms are non-segmented.

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

The final host of Trematoda is a snail.

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

Cestoda requires one host to complete its life cycle.

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

Ascaris lumbricoides is a type of flatworm.

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

Fungi reproduce only sexually.

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

Flashcards

Platyhelminthes

A group of parasitic worms that includes tapeworms and flukes.

Cestode

Type of flatworm known for its segmented structure and parasitic nature, often found in the intestines of animals.

Nematoda

A group of parasitic worms characterized by their cylindrical, unsegmented bodies.

Helminthes

Parasitic worms that inhabit the intestines of animals, including humans.

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Trematoda

A type of flatworm that has a leaf-like shape and complex life cycles involving multiple hosts.

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Tapeworm

A type of cestode, a parasitic flatworm with a segmented body, that typically inhabits the intestines of mammals.

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Ascaris lumbricoides

A type of roundworm, characterized by its cylindrical body and parasitic behavior, commonly found in the intestines.

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Trematoda

A type of flatworm that requires multiple hosts to complete its life cycle.

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Fungi

A group of organisms that can reproduce both sexually and asexually.

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Study Notes

Platyhelminthes

  • Leafe shape, non-segmented, and monoecious
  • Includes Trematoda (Schistosoma) and Cestoda (Tapeworm)

Trematoda (Schistosoma)

  • Final host: human
  • Intermediate host: snail
  • Infective stage: cercaria
  • Causes disease: bilharziasis, transmitted by swimming in contaminated water

Cestoda (Tapeworm)

  • Includes T.solium (in pork) and T.sagenata (in beef)
  • Final host: human
  • Intermediate host: T.solium (pork) and T.sagenata (beef)
  • Infective stage: cycticercus found in muscle tissue
  • Causes disease: cycticercusis (in pork), transmitted by undercooked meat

Nematoda (Round Worm)

  • Includes Ascaris lumbricoides
  • Required one host to complete life cycle
  • Causes disease: ascariasis
  • Transmitted by contaminated food or water with Ascaris eggs
  • Has two types of eggs: fertilized (infected) and unfertilized (non-infected)
  • Has separate genders (diecious)

Fungi Kingdom

  • Eukaryotic organism including microorganisms like yeast, moulds, and mushrooms
  • Characteristics:
    • Cell wall
    • Filamentous structure (except yeast)
    • Single cell or multicellular
    • Dense, clear nucleus with chromatin threads and nuclear membrane
  • Reproduction: asexual by fragmentation, budding, or producing spores
  • Causes three types of illnesses:
    • Poisoning by mushrooms
    • Parasitic infection by yeast
    • Allergic reactions by moulds

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