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
What is excreted by terrestrial gastropods?
Uric acid
What are used by gastropods for balance?
Statocysts
Reproduction of gastropods
- dioecious and monoecious
- love darts
- trochopore larva, velieger larva (for marine)
What do you call the class of clams, oysters, scallops, and mussels?
Class Bivalvia
It is the oldest part of the bivalve shell
umbo
Gas Exchange (Bivalvia)
- gills are used for gas exchange, attached to the foot and the mantle
- mantle is ciliated to move water inwards
Nutrition (Bivalvia)
- filter feeding
- food is moved by the cilia and moved towards the mouth
What do you call the muscles present in the bivalve shell at the dorsal end?
Adductor muscles
What sensory organs line the mantle?
- osphradium
- photoreceptors
- statocysts
Reproduction (Bivalvia)
- dioecious
- protandric
- monoecious
Human Interactions (Bivalvia)
- can reduce water turbidity
- used as food source
Class Cephalopoda
- octopus, squid, nautilus, cuttlefish
- highly-developed brain
Senses of Cephalopods
-eyes, statocysts, osphradia, tactile and chemoreceptors
Defense of Cephalopods
chromatophores
What are the female reproductive organs of cephalopods?
eggs, nidamental glands
What are the male reproductive organs of cephalopods?
testes, spermatophores (packets of sperm), hectocotylus
It is the subphylum of Arthropoda that is extinct and has three tagmata (head, thorax, pygdium). It looks like giant cockroaches found under the ocean.
Subphylum Trilobitomorpha
It has two tagmata, book lungs/tracheae, and dioecious. Examples include spiders, ticks, and mites.
Subphylum Chelicerata
It is used by chelicerata for locomotion.
prosoma
It is the abdomen of chelicerata.
opisthosoma
An order of chelicerata whose thorax is elongated. An example is scorpions.
Order Scorpionida
An example of this order is the black widow.
Order Araneae
Examples of this order are ticks and mites.
Order Acarina
An example of this order are sea spiders.
Order Pycogonida
Another order under chelicerata is…
Order opiliones
This subphylum has
- numerous pairs of legs
- two tagmata: head and trunk
- single pair of antennae
- detrivitores, predatory
Subphylum Myriapoda
It is a class under myriapoda that includes millipedes. Defense: toxins and curling
Class Diplopoda
This class of myriapoda includes centipedes.
Defense: maxillipeds
Example: Scutigera coleoptrata
Class Chilopoda
Another subphylum of arthropoda whose characteristics are
- are six legs
- most successful land-based animals
- first animals to fly
Subphylum Hexapoda
It is a class under subphylum hexapoda that has three tagmata (head, thorax, abdomen) and has an open circulatory system.
Class Insecta
