Class Monogenea Flashcards

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Questions and Answers

Class Monogenea has what type of organisms?

Ectoparasites found on the skin or gills of fish

An example of an organism from class Turbellaria is?

Planarian

A condition where the connective tissue grows and the scrotum, legs, and arms can swell?

Elephantiasis

This class has leaf-like bodies and is comprised of parasitic flukes?

Trematoda Signup and view all the answers

The first host a parasite lives and grows in is called?

Intermediate host Signup and view all the answers

How long can a tapeworm grow to be?

40 feet Signup and view all the answers

What is the round worm phylum?

Nematoda Signup and view all the answers

What is the tapeworm class?

Cestoda Signup and view all the answers

What is the flatworm phylum?

Platyhelminthes Signup and view all the answers

What is the class of free-living flatworms?

Turbellaria Signup and view all the answers

The class containing digenetic flukes is?

Trematoda Signup and view all the answers

The class containing flukes with a single host is?

Monogenea Signup and view all the answers

What is the muscular tube through which the flatworm can suck food into its gut?

Pharynx Signup and view all the answers

What are interconnected glandular cells making up the excretory system of a roundworm?

Rennette cells Signup and view all the answers

What flatworm structures are used for excretion and osmoregulation?

Protonephridia Signup and view all the answers

What is the intermediate host of a blood fluke?

Snail Signup and view all the answers

How many digestive tract openings does a roundworm have?

Two Signup and view all the answers

What is the term for an organism which is mature, pregnant, and full of eggs?

Gravid Signup and view all the answers

What are the intermediate hosts of a canine or feline heartworm?

Mosquitoes Signup and view all the answers

What are bloodsucking roundworms living in the small intestines that can penetrate the soles of your feet?

Hookworms Signup and view all the answers

What is a hollow, fluid-filled cavity that is partially lined by mesoderm?

Gastrocoel Signup and view all the answers

What condition is described as swollen tissue caused by obstruction of lymph fluid?

Lymphedema Signup and view all the answers

What is the main part of the body of a tapeworm made up of smaller repeated units?

Strobila Signup and view all the answers

What is the most common parasitic worm infection in people worldwide, known as 'wandering worms'?

Ascaris Signup and view all the answers

What are animals that lack a true cavity called?

Acoelomates Signup and view all the answers

What disease involves thickening and hardening of the skin, often a result of Filarial worm infection?

Elephantiasis Signup and view all the answers

How many digestive tract openings does a flatworm have?

One Signup and view all the answers

What is the scientific term for eyespots that can detect light intensity?

Ocelli Signup and view all the answers

What is the thick, flexible outer covering of a roundworm, shed during juvenile growth stages?

Cuticle Signup and view all the answers

What are the cup-shaped cells that expel excess liquids from a flatworm's body?

Flame cells Signup and view all the answers

What is an individual segment of a tapeworm body called, containing muscles, nerves, and sexual organs necessary to survive and reproduce?

Proglottid Signup and view all the answers

What parasite is known to cause Schistosomiasis?

Blood fluke Signup and view all the answers

Which organs do most tapeworms live?

Intestines Signup and view all the answers

What is the term for an organism that is not a parasite?

Free-living Signup and view all the answers

What is the number of tapeworms known to infect people?

Six Signup and view all the answers

What are the projections on a planarian that gives it an anterior and triangular shape?

Auricles Signup and view all the answers

What is the process in which flatworms breathe?

Diffusion Signup and view all the answers

What term describes animals with three fundamental cell layers?

Triploblastic Signup and view all the answers

What is the concentration of sense organs and nervous system control at the anterior end of the body called?

Cephalization Signup and view all the answers

What is the anterior structure on a tapeworm used for attachment?

Sucker Signup and view all the answers

What is the least complex of all types of worms?

Flatworms Signup and view all the answers

What is the description of a swimming fork-tailed larvae of a blood fluke?

Cercariae Signup and view all the answers

What is the disease characterized by a decrease in the number of red blood cells or amount of iron in the blood?

Anemia Signup and view all the answers

What is another name for the protective syncytial tegument of a flatworm?

Neodermis Signup and view all the answers

What are the most life-threatening canine worms?

Heartworms Signup and view all the answers

What are parasitic nematode worms that can cause a potentially serious infection; their best-known intermediate host is pigs?

Trichinella Signup and view all the answers

What is the process in which two flatworms try to get a penis in the genital pore of the other?

Penis fencing Signup and view all the answers

Study Notes

Class Monogenea consists of ectoparasites primarily found on the skin and gills of fish.
Examples of organisms within the flatworm category include Planarians, which belong to class Turbellaria.
Class Trematoda is characterized by parasitic flukes with leaf-like bodies.

Parasitic Lifecycle and Hosts

The first host for parasites, where they grow in juvenile stages, is called the intermediate host.
Blood flukes use snails as their intermediate hosts, while heartworms rely on mosquitoes.

Worm Types and Characteristics

Tapeworms, classified under Cestoda, can grow up to 40 feet in length.
Roundworms belong to the phylum Nematoda, with two openings in their digestive tracts.
Flatworms are members of the phylum Platyhelminthes and feature one digestive tract opening.

Anatomical Features and Functions

The pharynx serves as the muscular tube for flatworms to ingest food.
Protonephridia are structures in flatworms responsible for excretion and osmoregulation.
Developing tapeworms consist of strobila, the main body composed of proglottids, which are individual segments with reproductive organs.

Elephantiasis is a condition caused by the thickening of skin and can result from filarial worm infections, leading to severe swelling.
Lymphedema describes the swelling caused by lymph fluid obstruction.

Sensory and Reproductive Features

Ocelli are eyespots found in flatworms that can detect light intensity.
The process of penis fencing occurs among flatworms, where they attempt to mate by inserting a penis into the partner's genital pore.

Other Key Information

Hookworms cause infections in the small intestines and thrive in warm, moist soils; they can penetrate skin through the feet.
Anemia is a disease linked to a decrease in red blood cells or iron levels in the blood.
The neodermis is the protective outer layer of flatworms, also known as the syncytial tegument.

Miscellaneous Facts

The most prevalent parasitic worm infection globally is caused by Ascaris, also termed "wandering worms."
Six different species of tapeworms are known to infect humans.
Tripoblastic organisms possess three foundational cell layers, enhancing their complexity compared to simpler worms.

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Description

This quiz explores the Class Monogenea, focusing on ectoparasites and their characteristics. You'll encounter terms related to parasitic organisms and their classifications. Test your knowledge of key definitions and examples related to this fascinating class.