27 Questions
Which phylum houses the relatively simpler, unicellular parasites such as amoebas and flagellates?
Phylum Sarcomastigophora
Which class is further subdivided into Tapeworms (Cestoda) and Flukes (Trematoda)?
Phylum Platyhelminthes
Which phylum houses the blood dwelling protozoans known as Hemosporidia and Piroplasmida?
Phylum Apicomplexa
Which phylum houses the Insects and Arachnids?
Phylum Arthropoda
What is the habitat of Plasmodium?
Intraerythrocytic (inside blood cells)
Which of the following is a feature of Platyhelminthes?
Segmented Cestodes (tapeworms)
Which family is under Kingdom Animalia?
Arthropoda
Which statement about Coccidia and Hemosporida is true?
The first statement is true. The second statement is false.
How can protozoans be classified according to their mode of locomotion?
Sarcodineans - pseudopodium
What is the general habitat of most parasites in humans?
GI tract
Which protozoan classification is based on infection machinery?
Apicomplexa
Which protozoan group uses flagella for locomotion?
Mastigophorans
What is the distinguishing feature of Pseudophyllideans among Platyhelminthes?
Spatula-like scolex
Which kingdom does Nematoda belong to?
Animalia
What is the mode of locomotion for Ciliophora?
Cilia
Which group of parasites can be classified as insects, arachnids, or other bugs?
Arthropoda
Which of the following is a characteristic of Phylum Nematoda?
Possessing a complete digestive tract
Which class is included in Phylum Platyhelminthes?
Cestoda
Which of the following is an example of a parasitic arthropod?
Mosquitoes
Which phylum includes obligate intracellular parasites with an apical complex to help infect the host cell?
Apicomplexa
Which phylum includes ameboid protozoans in trophozoite stage, such as Toxoplasma and Cryptosporidium?
Sarcomastigophora/Coccidia
What is the general morphology of parasites in Phylum Ciliophora?
Ameboid, asymmetric shape
Which phylum includes organisms studied in medical parasitology as indicator organisms?
Hemosporidia
Which phylum houses the blood dwelling protozoans known as Hemosporidia and Piroplasmida?
Hemosporidia
What is the distinguishing feature of Pseudophyllideans among Platyhelminthes?
Having a scolex and proglottids
What is the distinguishing feature of Plasmodium among Apicomplexa?
Having a complex life cycle involving a mosquito vector
Which statement about Coccidia and Hemosporida is true?
Both are studied as indicator organisms in medical parasitology
Study Notes
Medically Important Parasites
- Medically important parasites are primarily eukaryotic organisms with a membrane-bound nucleus.
- They are divided into two big kingdoms: Kingdom Animalia and Phylum Nematoda.
- Phylum Nematoda includes parasites commonly referred to as roundworms, with general morphology resembling a prototypical worm and a complete digestive tract.
- Members of Phylum Nematoda include Ascaris, Trichuris, Hookworms, and Strongyloides.
- Phylum Platyhelminthes includes Class Cestoda and Class Trematoda, with distinct characteristics such as tapeworms being dorsoventrally flat and hermaphroditic.
- There are many genera of arthropods that can be considered human parasites, including cockroaches, caterpillars, hornets, and wasps.
- Most parasitic arthropods are ectoparasites and vectors for other parasites, belonging to the classes of insects and arachnids.
- Phylum Apicomplexa includes obligate intracellular parasites possessing an apical complex to help infect the host cell, with members such as mosquitoes, lice, and ticks.
- Phylum Sarcomastigophora/Coccidia includes ameboid protozoans in trophozoite stage, with members like Toxoplasma, Cryptosporidium, and Cyclospora.
- Phylum Ciliophora includes ciliates with a general morphology resembling an amoeboid, asymmetric shape and a locomotory apparatus of cilia.
- Phylum Hemosporidia includes organisms studied in medical parasitology as indicator organisms.
- The text provides detailed information on the taxonomy, morphology, and characteristics of medically important parasites and their respective classifications.
Test your knowledge of medically important parasites with this quiz. Learn about eukaryotic organisms, including roundworms, tapeworms, and arthropods, that can cause human diseases. Explore the taxonomy, morphology, and characteristics of these parasites.
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