Biology for a Changing World Chapter 19
hypha
a long, threadlike structure through which fungi absorb nutrients
alga
a uni- or multicellular photosynthetic protist
What do all members of the informal group known as protists have in common?
all eukaryotic
invertebrate
animal lacking a backbone
vertebrate
animal with a body or cartilaginous backbone
eukaryote
any organism of the domain Eukarya characterized by the presence of a membrane-enclosed nucleus and organelles
What is similar about cockroaches and lobsters?
arthropods with an exoskeleton
What do fishers and humans have in common?
backbones, mammary glands, and body hair
What do a backbone and an exoskeleton have in common?
both provide support to an animal's body
What group of plants were first on land and why aren't they everywhere today?
bryophytes, they can only live in damp environments and cannot live drier environments
protist
eukaryote that cannot be classified as a plant, animal, or fungus, usually unicelular
What do a fisher and fir tree have in common?
eukaryotic and live in Olympic National Park
animal
eukaryotic multicellular organism that obtains nutrients by ingesting other organisms
exoskeleton
external hard skeleton covering the body of many animals, such as arthopods
arthropod
invertebrate having a segmented body, a hard exoskeleton, and jointed appendages
What are defining features in eukaryotes with the domain Eukarya?
membrane-bound organisms including a nucleus
plant
multicellular eukaryote that has cell walls, carries out photosynthesis, and is adapted to living on land
bryophyte
nonvascular plant that does not produce seeds
decomposer
organism such as a fungus or bacterium that digests and uses the organic molecules in dead organisms as sources of nutrients and energy
radial symmetry
pattern exhibited by a body plan that is circular with no defined left or right
bilateral symmetry
pattern exhibited by a body plan with right and left halves that are mirror images of each other
vascular plant
plant with tissues that transport water and nutrients through the plant body
What type of body symmetry does a sand dollar have?
radial
How do fungi obtain nutrients and energy?
secreting digestive enzymes onto their food, the food is then digested and absorbed
angiosperm
seed-bearing flowering plant with seeds typically contained within a fruit
gymnosperm
seed-bearing plant with exposed seeds typically held in cones
annelid
segmented worm such as an earthworm
insect
six-legged arthropod with three body segments, head thorax, and abdomen
mollusk
soft-bodied invertebrate, generally with a hard shell (tiny, internal or absent)
endoskeleton
solid internal skeleton found in many animals including humans
mycelium
spreading mass of interwoven hyphae that forms the often subterranean body of multicellular fungi
fern
the first true vascular plants (no seeds)
What is a major difference between a fern and moss?
the presence of a vascular system
How does physical diversity effect biodiversity? (Olympic National Park)
the variety of habitats influence difference adaptations
fungus
unicellular or multicellular eukaryotic organism that obtains nutrients by secreting digestive enzymes onto organic matter and absorbing the digesting product