Zoology Flashcards
Do not molt
Rotifera
Molt (ecdysozoans)
Nematoda
Common characteristics of pseudocoelomate
Pseudocoelom
Eutely
Complete digestive tract
No muscular tissue
No membrane
Is a spacious, fluid-filled that contains visceral organs that forms hydrostatic skeleton
Pseudocoelom
Evolutionary advantage
Greater freedom of movement
Body composed of constant number of somatic cells
Eutely
Pseudocoelomate organ system present
Digestive system
Excretory system
Nervous system
Reproductive system
Pseudocoelomates organ system absent
Circulatory system
Respiratory system
Human parasite
Ascaris lumbricoides
Most common parasite in US that cause itchiness in the butt
Pinworms
How pinworms spread
Fecal oral route
Filarial worms
Wuchereria bancrofti
Effect of filarial worms
Elephantiatis
3 mosquitoes that transmit elephantiatis
Aedes
Anopheles
Culex
Hookworm
Ancylostoma duodenale
Dog heartworm is pass by
Aedes mosquito
Causes trichinosis
Trichinella
C. elegans
Caenorhabditis elegans
Segment in the body
Metamere
Small hair-like structure absent in leeches
Setae
Divided by septa or also known as separating tissue
Coelom
Internal walls
Septa
Giant earthworms
Michrochaetus rappi
Smallest annelid
Chaetogaster annandalai
Are the major phlyla showing segmentation
Annelids
Terrestrial annelids secretes a thin protective coat called
Cuticle
Is an organ user to detect gravty
Statocysts
Help in movement
Setae
Annelids reproductions
Budding
Secretes a mucous that hold the worms in place and acts like cocoon
Clitellum
Muscle runs from front to the rear
Longitudinal
Many hair
Class polychaeta
Few hair
Class oligochaeta
Leeches
Class Hirudinae
Paired feet
Parapodia
Earthworm common name
Lumbricus terrestris
Leeches release this substance afterwards they attached to their host. This keeps the blood from clotting
Hirudin
Soft or hard in arthropods
Exoskeleton
Efficient locomotion that most specialized by annelids
Tagmatization
Regions means
Tagma/tagmata
Other characteristics of Arthropods
Bilateral
Tripoblastic
Schizocoelous
No septa
Arthropod group
Extinct trilobite
Subphylum trilobita
Horseshoe crab, spiders, tick, mites
Subphylum chelicerata
Centipedes, Millipedes
Subphylum Myriapoda
Crabs, shrimps,lobster, barnacles
Class crustacea
Insect
Subphylum Hexapoda
Fused head and thoracic region
Cephalothorax (prostosoma)
Contains digestive, reproductive,excretory and respiratory organs
Abdomen (Opisthosoma)
Harmless and beneficial to human
Class Arachnida
Caused by tick
Lyme disease
Stalk and ambush their prey
Cursorial
most poisonous spider but has short fangs to bite human
Daddy longlegs (harvestmen)
Chemicals that elicit behavioral change
Pheromones
Male pluck female web for mating
Ritual
Only arthropods with 2 pairs of antennae
Crustaceans
Brine shrimp
Artemia salina
The most abundant animals in the world
genus Calanus
Cover most of the body or just the cephalothorax. Dorsal coverings.
Carapace
Have appendages on each somite
Malacostraca and remmipedia
Major blood-filled body space not a coelom
Hemocoel
Secretes inactive form of enzymes at the based of the skeleton
Epidermis
Produces neurosecretory hormone which inhibits molting and is stored in the sinus gland
X-organ
Produces molting hormones
Y-gland
Release for molting processes
Ecdysone
Where you can find anus is
Telson
Second largest groups, lack a carapace
Subclass copepoda
Includes barnacles
Class cirripedia
Largest and most diverse class of crustacea
Class Malacostraca
Controversial taxon
Subphylum Uniramia
Uniramians use ___ to distruvuet respiratory gases
Tracheae
Where wings is present
Mesothorax and metathorax
How many segments does insects abdomen has
9-11
Has one pair of wings
Diptera
Provide the fly with balanced during fight
Halteres
The main site of digestion
Midgut
Primarily a site for water absorption
Hindgut
Among vertebrate, only ____ has crop
Bird
Parasitic insects have parasite called
Hyperparasitism
Is a period of dormancy in the annual life cycle
Diapause
These chemicals are secretes by one individual to affect the behavior of another individual
Pheromones
They are an ancient group extending back to the cambrian period
Phylum Echinodermata
Mostly suspension or deposit feeders
Holothurians or sea cucumber
Found on hard bottom of the sea
Echinoids or sea urchins
Sessile and flower-like
Crinoids
Sea star
Class Asteroidea
Common in the east coasts of US
Asterias
Common on the west coast
Pisaster
Runs from the mouth to the tip of each arm
Ambulacrum
Bordered by rows of tube feet
Ambulacral groove
Keep the body surface free of debris
Pedicellariae
Are soft projections lined with peritoneum and serve in respiration
Papulae
