Third Exam Flashcards
What are the functions of the cuticle of Phylum Nematoda?
mechanical protection, digestion resistance, attachment
What do you call the outer covering of nematodes?
Cuticle
Feeding of Nematodes
Complete digestive system from mouth to anus
Nervous system of nematodes
Nerves extend throughout the body; plays a role in molting, cuticle formation, and growth
Reproduction of nematodes
Sexual dimorphism; dioecious
What is the reproductive organ of male nematodes?
Bursa
What is the reproductive organ of female nematodes?
Genital pore
What do you call the type of nematodes that can cause organ damage?
Ascariasis lumbricoides
What illness is caused by pinworms and is autoinfectious?
Enterobiasis
What do you call the illness caused by hookworms that can cause weight loss, hemoglobin deficiency, and mental retardation?
Necatoriasis
What do you call the type of nematode that causes trichinosis which leads to edema, and in severe cases can cause nervous system damage and death?
Porkworm
It is also known as an eye worm and is transmitted by flies.
Filarial worms
It causes a condition called lymphatic filariasis, eventually leading to elephantiasis.
Filarial worms
Part of the mantle in molluscans that contains proteins
Periostracum
Part of the mantle in molluscans that contains calcium carbonate with organic material
Prismatic; Nacreous
What do you call the feeding structure of molluscans?
Radula
The radula is supported by the…
odontophore
Class Gastropoda
- Largest molluscan class
- Marine, freshwater, territorial
Ex.: snails and slugs
What is the purpose of torsion?
Defense
Water cleanliness
Sensory
What is excreted by marine gastropods?
Ammonia