Characteristics Flashcards
(21 cards)
Sponges Characteristics
covered in pores
Invertebrates
Ectothermic
Heterotrophic
Mature sponges are sessile
Asymmetrical
Animal characteristics
heterotrophic
Multicellular
No cell walls so they have a skeletal structure
Characteristics of worms
invertebrates
Ectothermic
Bilateral symm.
Long narrow bodies with no legs
Distinct anterior and posterior
Simplest animal with central nervous system
Nematoda (roundworms)
tube within a tube
Skin secretes a cuticle
Complete digestive system
Simple nervous system
Sexual reproduction
Annelida (segmented worms)
Tube within a tube; rings
Skin secretes mucous
Complete digestive system
More complex nervous system
Sexual reproduction; hermaphroditic (both female and male in a single worm)
Flukes
parasites
Digestion : one opening
Simple nervous system
Two hosts needed one for adult and one for larva
Tape worms
parasites
Digestion: absorbs digested food of host
Simple nervous system
Two hosts needed one for larva and one for adult
Planarians
free living
Digestion: one opening
Simple nervous system + eye spots
Chilopada: centipedes
one pair of legs per segment
Flattened body
Predators with claws
Diplopoda: Millipedes
Two pairs of legs per segment
Round body
Eats decaying plants
Crustaceans
Respiratory system: via diffusion or through gills
Complete digestive system
Open circulatory system
Nervous system: 2 ganglia and a nerve chord
Reproductive system: external fertilization
Aquatic
2 body segments
2 compound eyes
3 pairs of mouthpiece parts
5 pairs of legs
Swimmerets
Telson
Bivalvia
two shelled
Hinged teeth
Adductor muscles
Umbo small bulge on the two shells near the hinge
Nacre (creates pearl)
Mantle
Gills
Siphon
Molluscs
marine animals
Bilateral symm.
Soft bodies
Muscular foot
Visceral mass containing vital organs
Mantle skin like organ covering visceral mass
Echinoderms
marine
Pentaradial symm.
Water vascular system
Endoskeleton made of ossicles
Closed digestive system
Open circulatory system
Nerve net
Sexual reproduction
Regeneration
Cnidarians
sac like soft bodies with radial symm.
2 germ layers
Nerve and contractile cells
Two forms polyp and medusa
Tentacles with stinging cells
Central digestive system with a mouth
No circulatory system or respiration system
Aves: birds
vertebrates
Pneumatized bones (hollow and light)
Air sacs
4-chambered heart
Wings
Feathers of keratin
Beaks
Hallux ( backwards toe used for grasping)
Oviparous
Endothermic
High metabolism
Powerful eyesight
Migration
Mammals
hair
* provides insulation, regulates body temperature, protects skin, can serve as camo, provides sensory feedback
Two pairs of limbs (exception, whale order)
Circulatory system
Lungs
Reproduce via internal fertilization
Echinoderm
spiny skinned animals
Marine
Three germ layers
Water vascular system
Endoskeleton
Regeneration: ability to replace damaged areas
Amphibians
vertebrates
Endoskeleton
Ectothermic
Cloacal opening
3-chambered heart
Central nervous system
Life cycle: egg, larva, adult
Herbivore them carnivore
Gills then lungs and skin
Reptiles
scales
Ectothermic
Tetropods or no legs
Lungs
3 chambered heart except for crocodilia order
Sphenodontia: tuatara
lives over 100 years
Nocturnal
No external ears
