Animals Flashcards
Animals
Eukaryotic, multicellular, motile, heterotrophic organisms
How many animals are invertebrates and vertebrates
95% invertebrates
5% vertebrates
Herbivore
Eats plants
Carnivore
Eats animals
Omnivore
Eats plants and animals
Detritivore
Feeds on decaying organic material
Filter feeders
Aquatic animals that strain food from water
Parasite
Lives in or on another organism (symbiotic relationship)
Respiration
Take in oxygen and give off carbon dioxide
Lungs, gills, through skin, simple diffusion
Circulation
Very small animals rely on diffusion
Large animals have circulatory systems
Difference between open and closed circulation
Open no blood vessels
Closed blood vessels and veins
Excretion
Primary waste product is ammonia
Liquid waste
Response
Receptor cells= sound, light, external stimuli
Nerve cells= nervous system
Movement
Most animals are motile (can move) in one stage of their life
Movement: muscles work with a what
Skeleton
Sexual reproduction
Most reproduce sexually= genetic diversity
Asexual reproduction
Many invertebrates can also reproduce asexually= to increase their numbers rapidly
Cell specialization and levels of organization
Cells-> tissues-> organs-> organ systems-> organisms
Zygote
Fertilized egg
Blastula
A hollow ball of cells
Gastula
The blastula folds in creating this opening
Protostome
Mouth is formed from opening in Gastula
Anus
Opening for solid waste removal from digestive track
Cephalization
An anterior concentration of sense organs
To have a head for directional movement
What are Germ layers
The cells of most animal embryos differentiate into the three layers called germ layers
The germ layers
Endoderm
Mesoderm
Ectoderm
Endoderm
Inner most
Develops into the lining of the digestive track and respiratory track
Mesoderm
Middle
Muscle, circulatory, reproductive, and excretory systems
Ectoderm
Outermost
Sense organs, nerves, outer layer of skin
A coelom
A fluid filled cavity between the alimentary canal and the body wall
Acoelomate
No coelomic cavity exists
Pseudocoelomate
A coelom exists but it is lined by mesoderm only on the body wall not around the gut
Coelomate (eucoelmate or true coelom)
The coelom is lined both on the inside of the body wall and around the gut by the mesoderm. With true coelom also have mesunteries, which suspend the body organs within the coelom
Body symmetry
The body plan of an animal, how it’s body parts are arranged
Asymmetry
No pattern
Corals and sponges
Radical symmetry
Shaped like wheel
Star fish, hydra, jelly fish
Bilateral symmetry
Has right and left side (humans insects and cats)
What happens to cephalization if animals are more complex
The more complex the animals become the more pronounced their cephalization
Anterior
Toward the head
Posterior
Toward the tail
Dorsal
Back side
Ventral
Belly side
Segmentation
Advanced animals have body segments and specialization of tissue.
Ex humans with ribs and spine
Porifera
Ex sponges
Milestone: multicellular
Cnidaria
Ex jellyfish, hydria, coral
Milestone:tissue
Platyhelminthes
Ex flat worm
Milestone bilateral symmetry
Nematoda
Ex round worms
Milestone pseudocoelom
Mollusca
Ex clams squids snails
Milestone coelom
Annalida
Ex earthworms and leeches
Milestone segmentation
Arthropoda
Ex insects spiders crecstations
Milestone jointed appendages
Echinodermata
Ex starfish
Milestone deuterosomes
Chordata
Ex vertebrates
Milestone notochord
Domain bacteria
Promaryotes with cell walls that contain peptidoglycan
Peptidedohlycan
A polymer with two sugars alternating in the chain
Domain archea
More ancient than bacteria
Prokaryotes whose cell walls do not contain peptidoglycan
Extreme phillies
Domain eukarya
Cells that have a membrane bound nucleus and organelles
Kingdom Protista, fungi, plantae, animal is
Kingdom Protista
Eukaryotic, unicellular, colonial, or multicellular no organs
Plant like Protista
Algae
Protista Protozoan a
Heterotrophs
Protista fungi like
Slime mold
Eugenoids Protista
Plant and animal like Protista
Photosynthetic
Kingdom fungi
Unicellular or multicellular
Heterotrophic, don’t move
Have cell walls made of chitin
Kingdom plantae
Cellulose cell walls contain Photosynthetic pigments (chlorophyll), have tissues
Kingdom anamalia
Heterotrophic, multicellular, no cell walls, most with tissues organs organ systems