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46 Cards in this Set

  • Front
  • Back
Ecosystems
A community + nonliving factors with which the community interacts
Energy flows through ecosystems in food chains
Abiotic Factors
Temperature
Water
Salinity
Sunlight
Rocks/soil
Climate
Abiotic factors: temperature, precipitation, sunlight, and wind
Macroclimate vs. microclimate
Global climate patterns
Proximity to bodies of water or other topographic features create regional climatic variation.
Biomes
Major groups of plants and animals that occur over a wide geographic area
Have distinctive characteristics due to combinations of rainfall and temperature
Terrestrial Biomes
Terrestrial biomes can be characterized by distribution, precipitation, temperature, plants, and animals
Tropical Rain Forest
High rainfall
Constant temperatures
Stratification of forest
Competition for light
High number of species
Coniferous forest
Taiga
Cold temperatures
Freezing winter
Migratory birds/mammals
Temperate Deciduous Forest
Broadleaf forest
Shed leaves in winter
Freezing winter
Tundra
Short growing season
Soils often frozen
Dwarf plants
Tundra
covers expansive areas of the Arctic; alpine tundra exists on high mountaintops at all latitudes
Winters are long and cold while summers are relatively cool; precipitation varies
Permafrost
a permanently frozen layer of soil, prevents water infiltration
Vegetation is herbaceous (mosses, grasses, forbs, dwarf shrubs and trees, and lichen) and supports birds, grazers, and their predators
Chaparral
Seasonal rainfall
Hot summers, cool the rest of the year
Shrubs and small trees, grasses
Drought and fire tolerant
Grassland
Seasonally high rainfall (dry winters/wet summers)
Cold winters/ hot summers
Grasses and forbs
Drought and fire adaptations
grazers
Savanna
Seasonal rainfall
Warm year-round
Herbivores
Grasses and thorny trees
Desert
Precipitation is low and highly variable, generally less than 30 cm per year; deserts may be hot or cold
Desert plants are adapted for heat and desiccation tolerance, water storage, and reduced leaf surface area
Common desert animals include many kinds of snakes and lizards, scorpions, ants, beetles, migratory and resident birds, and seed-eating rodents; many are nocturnal
Aquatic Biomes
physical environment,
chemical environment,
geological features,
photosynthetic organisms, and
heterotrophs
Lakes
Standing bodies of water
Oligotrophic lakes are nutrient-poor and generally oxygen-rich
Eutrophic lakes are nutrient-rich and often depleted of oxygen if ice covered in winter
Rooted and floating aquatic plants live in the shallow and well-lighted littoral zone
Estuaries
An estuary is a transition area between river and sea
Salinity varies with the rise and fall of the tides
Estuaries are nutrient rich and highly productive
An abundant supply of food attracts marine invertebrates and fish
Characteristics of Fishes
Gills
Vertebral column (bone or cartilage)
Single loop blood circulation
A nutritional deficiency
Jawless Fish
Lamprey
Hagfish
CARTILAGINOUS FISHES
Cartilage not bone for skeleton
Sharks, skates, & rays
CLASS AMPHIBIA
FROGS & TOADS
SALAMANDERS

Legs
Cutaneous respiration
Lungs
Pulmonary veins
Partially divided heart
SALAMANDERS
Tailed amphibia
Carnivorous larvae & adult
Anura
Frogs & Toads
~3450 species
No tail
Herbivorous larvae
Carnivorous adult
Reptiles
Amniotic egg
Dry skin
Thoracic breathing (expand/contract rib cage)
Class Aves
Birds
feathers
flight skeletons
Class Mammalia Mammals
Mammary glands
Hair
Middle ear (3 middle ear bones)
3 Reproduction Patterns
Egg-Laying Monotremes
Pouched Marsupials
Placental Mammals
Phylum Porifera: Sponges
No true tissues
Phylum Cnidaria:
Jellyfish & Hydra
Radial Symmetry
Phylum Platyhelminthes: Solid Worms
Bilateral Symmetry
No Body Cavity
Flatworms, Flukes, and Tapeworms
Advent of Body Cavity
Aids in
Circulation
Movement
Organ function
Pseudocoelomate
Nematoda (Roundworms)
Rotifera (Rotifers)
Phylum: Mollusca clams, snails
Coelom
No segmentation
Includes:
Gastropods (snails and slugs)
Bivalves
Cephalopods (octopuses and squid)
Segmentation
series of similar segments that make up a body

In Annelids, Arthropods, & Chordates
Phylum Annelida: Segmented worms
Coelom
Segmentation

Includes: earthworms, polychaetes, & leeches
Phylum Arthropoda: Crustaceans and insects
Segmentation
Jointed appendages
Exoskeleton
Chelicerates
Trilobites
Horseshoe crabs
Spiders
Ticks & mites
Scorpions
Mandibulate Arthropods
Crustaceans
Millipedes & centipedes
Insects
Protostome
Protostome—an animal in whose embryonic development exhibits spiral cleavage and the mouth forms from the blastopore. Coelom forms from mesoderm
Deuterostome
an animal in whose embryonic development exhibits radial cleavage and the anus forms from the blastopore. The coelom forms from outpouchings of the archenteron
Phylum Echinodermata
Deuterostomes
Endoskeleton
WHAT DEFINES A CHORDATE?
NOTOCHORD
PHARYNGEAL GILL SLITS
NERVE CORD
POSTANAL TAIL
Nonvertebrate Chordates
NO CRANIUM
NO VERTEBRAE

tunicates, sea squirts
Vertebrate Chordates
Backbone
Cranium (head with a skull and brain)
Vertebrates
FISH
AMPHIBIANS
REPTILES
BIRDS
MAMMALS