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BIO 104 exam 1 with correct answers
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BIO 104 exam 1 with correct answers
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BIO 104 exam 1 with correct answersWhat is taxonomy? - Answer -the science of naming and classifying organisms
What is a taxon? - Answer -a group of organisms in a classification system
What are 6 characteristics for classifying organisms? - Answer -Anatomy, Physiology,
Embryology, molecular, behavior,
Taxon order - Answer -Domain, Kingdom, Phylum, Class, Order, Family, Genus,
Species
What is the scientific name of an organism? - Answer -Genus-species, Binomial
nomenclature
How do you correctly write the scientific name? - Answer -genus and species
What is a species? - Answer -a group of living organisms consisting of similar
individuals capable of exchanging genes or interbreeding.
Domains of Eukarya - Answer -protists, fungi, plants, animals
What is Symetry? - Answer -how the parts are arranged around a center point
What is asymmetry? Radial symmetry? Bilateral symmetry? - Answer -not even around
a point, even distribution, only one plane on the dorsal axis.
What are the 5 grades of organization? - Answer -Cytoplasmic, Cellular, Tissue, Organ,
Organ-system
What is cytoplasmic? Cellular? Tissue? Organ? Organ system? level of organization? -
Answer -protists, sponges, cnidaria, flatworms, larger more complex.
How many layers are in a diploblastic embryo? What are they? - Answer -two, Ectoderm
and Endoderm.
How many layers are in a triploblastic embryo? What are they? - Answer -Three,
Ectoderm Mesoderm Endoderm
What is a coelom? - Answer -body cavity
, What are 6 advantages of a body cavity? - Answer -More room for organ development,
surface for diffusion of nutrients, more storage, acts as a hydrostatic skeleton, provides
means of getting rid of gasses, increased body size
What is an acoelomate animal? - Answer -No body cavity.
Pseudocoelomate animal? - Answer -False body, not entirely lined by mesoderm.
Coelomate animal? - Answer -True body cavity.
What are differences between protostome and deuterostome animals? - Answer -P:
Cleavage: spiral and determinate. Blastopore: becomes mouth. Coelom: forms by
splitting the mesoderm.
D: Cleavage: radial and indeterminate. Blastopore: becomes the anus. Coelom: forms
by pinching the gut.
What is a sac body plan? - Answer -A one opening body plan
What is a tube-in-a-tube body plan? - Answer -2 openings
What is metamerism? - Answer -segmental arrangement of body parts
What is tagmatization? - Answer -specialization of regions of the body for specific
functions
What is cephalization? - Answer -development of a head
aboral? - Answer -away from the mouth
oral? - Answer -pertaining to the mouth
Anterior? - Answer -front of the body
Posterior? - Answer -toward the back
Caudal? - Answer -toward the tail
Cephalic? - Answer -pertaining to the head
Distal? - Answer -away from the point of attachment
Proximal? - Answer -Closer to the point of attachment
Dorsal - Answer -pertaining to the back
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