28 Questions
What is a characteristic of A-Dioecious organisms?
They have male and female reproductive organs in separate individuals
What type of reproduction involves the fusion of male and female gametes?
Sexual reproduction
What is another term for sexual reproduction?
Strategies of sexual reproduction
What is the term for the reproductive strategy in which male and female reproductive organs are found in separate individuals?
A-Dioecious
What is a characteristic of A-Dioecious organisms that is different from other reproductive strategies?
They have male and female reproductive organs in separate individuals
What is the basis for the definitive classification of parasitic worms?
External and internal morphology of egg, larval, and adult stages
What is the characteristic of the life cycle of parasitic worms?
Complex and involving multiple stages
Which stage of the parasitic worm's life cycle is harbored by the intermediate host?
Larval stage
What is the role of the definitive host in the life cycle of parasitic worms?
Harbors the adult stage
What type of parasitic worms are being referred to in the passage?
Roundworms and flatworms
What is the result of the female worm producing microfilariae after mating?
The parasite's life cycle is repeated.
What is the name of the parasite that causes inflammation in the skin?
Loa loa
What happens to the microfilariae produced by the female worm?
They migrate to the bloodstream.
What is the outcome of a mosquito bite from an infected mosquito?
The human host is infected with the parasite.
What is the name of the disease caused by the Loa loa parasite?
Loiasis
What type of bodies do roundworms have?
Smooth and cylindrical
How can roundworms be easily distinguished from other parasitic worms?
By their smooth and cylindrical bodies
What is true about the size of roundworms?
They differ greatly in size
Which feature is NOT a characteristic of roundworms?
Segmented bodies
What type of digestive tract do roundworms have?
Complete with oral, gut, and anal openings
Into which two main categories are nematodes classified?
Intestinal nematodes and Tissue nematodes
Which immune system biomarkers are elevated due to nematode invasion?
IgE and eosinophils
Where are nematodes commonly found?
In fresh water, the sea, and the soil
Which description is true about nematode bodies?
They have a smooth body lacking both endo and exoskeleton.
In nematodes, what is the space between organs filled with?
Mesenchyme (parenchyma)
What is true about the digestive system of nematodes, if present?
It is incomplete.
What is typically true about the sexes of nematodes?
They are united (hermaphrodite) with very few exceptions.
Which nematode is the largest of the intestinal nematodes and a common human parasite?
Ascaris lumbricoides
This quiz covers the lifecycle of parasitic worms that infect humans, including flatworms and roundworms. It explores the complex stages of development from egg to larva to adult.
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