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Ecology is the study of interactions and relationships of organisms with surrounding biotic and abiotic components.
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The levels of ecology from smallest to largest are:
[blank_start]Individual[blank_end] < [blank_start]Population[blank_end] < [blank_start]Community[blank_end] < [blank_start]Ecosystem[blank_end] < [blank_start]Biosphere[blank_end]
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Individual
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Population
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Community
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Ecosystem
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Biosphere
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What is the most important abiotic parameter defining species distribution?
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Temperature
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Habitat
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Ecological roles
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Oxygen levels
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What is the ecological "space" a species fills?
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Niche
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Population
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Community
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Abiotic parameter
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Biotic parameter
Frage 5
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Select all the phyla that belong in the animal kingdom:
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Porifera
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Cnidaria
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Platyhelminthes
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Nematoda
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Mollusca
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Annelida
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Arthropoda
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Echinodermata
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Chordata
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Pteridophyta
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A [blank_start]diploblast[blank_end] has two germ layers and a [blank_start]triploblast[blank_end] has three germ layers.
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diploblast
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triploblast
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triploblast
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diploblast
Frage 7
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A deuterostome is [blank_start]anus[blank_end] first and a protostome is [blank_start]mouth[blank_end] first.
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A unique characteristic of animals is that all were developed from a [blank_start]blastula[blank_end], a hollow ball of embryonic cells.
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A unique characteristic of animals is that all have cell adhesion molecules: including [blank_start]fibronectin[blank_end] and [blank_start]cadherins[blank_end].
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A unique characteristic of animals is all have cell junctions including [blank_start]tight junctions[blank_end], [blank_start]desmosomes[blank_end], and [blank_start]gap junctions[blank_end]
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tight junctions
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desmosomes
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gap junctions
Frage 11
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A unique characteristic of animals is all have an extracellular matrix containing [blank_start]collagen[blank_end].
Frage 12
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Label the graphic in terms of fundamental niche and realized niche.
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Realized niche
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Fundamental niche
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A [blank_start]fundamental[blank_end] niche includes all acceptable conditions which a species can occupy while a [blank_start]realized[blank_end] niche is a subset of suitable conditions that a species occupies.
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fundamental
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realized
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realized
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fundamental
Frage 14
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Pair the animals to their correct type in the survivorship curve.
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Human
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Mackerel
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American Robin
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Human
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American Robin
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Mackerel
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Human
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American Robin
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Mackerel
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What survivorship curve would you expect for sea turtle populations?
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Growth is limited by resources.
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What is the term for a resource in short supply?
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Limited resource
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Limited factor
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Carrying capacity
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Niche
Frage 18
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What is the term for the largest population that an environment can support?
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Carry capacity
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Complete niche
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Maximum capacity
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Exponential growth
Frage 19
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At carrying capacity, birth rates are [blank_start]equal to[blank_end] death rates.
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equal to
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greater than
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less than
Frage 20
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Populations [blank_start]fluctuate[blank_end] around carrying capacity.
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fluctuate
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flourish
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diminish
Frage 21
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A density-independent effect impact is proportional to number of individuals in an area.
Frage 22
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Select all the CORRECT statements about competition:
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Competition reduces the fitness of BOTH parties.
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Competition occurs when resources are limited.
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Competition can be intraspecific or interspecific.
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Competition is a density-independent effect.
Frage 23
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Populations of predator and prey tend to oscillate when a predator relies on a single prey species
Frage 24
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What does this image depict?
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Resource partitioning
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Limited resources
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Realized niches
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Interspecies competition
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[blank_start]Cell fate[blank_end] is determined by a series of "decisions" made in early development that become the programmed identity of cells with a point of no return.
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[blank_start]Cleavage[blank_end] is the first cell divisions where zygotic contents partition among smaller cells.
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[blank_start]Gastrulation[blank_end] is the formation of gut and other germ layer(s) in addition to ectoderm.
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[blank_start]Morphogenesis[blank_end] is the development of organismal form and/or shape.
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A zygote subdivides into smaller cells called [blank_start]blastomeres[blank_end].
Frage 30
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Cell fates are closely linked to germ layers.
Frage 31
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Name the type of cleavage shown:
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Name the type of cleavage shown:
Frage 33
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Gradients of morphogens can be established in what ways?
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Unequal distribution in the zygote.
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Production of morphogens from specific cells.
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Inheriting of morphogens from parent cell.
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Equal distribution in the zygote.
Frage 34
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Early development requires two processes:
Frage 35
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Which statement best describes competitive relationship:
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Two species of birds that live harmoneously in the same oak tree.
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A north Georgia bobcat and a cougar population that both prey on cottontail rabbits.
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A nematode that infects a white-footed mouse by tropic transmission.
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A barnacle that resides on the underbelly of a whale shark.
Frage 36
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Which statement best describes a parasitic relationship:
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A white-footed mouse infected by a nematode through tropic transmission.
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Two species of birds that reside in the same oak tree.
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A Central American squirrel monkey that eats bananas and ants and a Geoffroy's spider monkey that eats starfruit and flies in the same Costa Rican rainforest region.
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Two species of tropical fish that live in different locations in the same coral reef.
Frage 37
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Which is an example of an amensalism relationship:
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A black walnut tree secreting the chemical, juglone, killing all it's neighboring plants.
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Two species of birds harmoniously living at different level branches in the same oak tree.
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Two species of lizards eating the same type of fly in a local coastal marsh.
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A swamp rabbit and a marsh rabbit inhabiting different regions in Georgia.
Frage 38
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Select the example of mutualistic relationship:
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Two species of birds harmoniously living on different branch levels of the same oak tree.
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A population of Northwestern salmon with more males than females during breeding season.
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The bread mold Penicillium secreting penicillin to that chemical kills bacteria.
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A nematode that infects the white-footed mouse by trophic transmission.
Frage 39
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Select the example of a commensalistic relationship:
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A clownfish that live amid the tentacles of the anemones which protects them from predators.
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Two species of birds that live harmoniously on different level branches of the same oak tree.
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A nematode that infects the white-footed mouse via trophic transmission.
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A marsh rabbit and a swamp rabbit that migrated to different wetland regions in Georgia.
Frage 40
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Theories exist that explain the method in which multicellularity arose in animals. Which theory has the most evidentiary support in the scientific community?
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Symbiotic relationship between protist species.
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Ancestral colonial protist
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Cellularization: multinucleate protist ancestor evolves membranes around nuclei.
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All have equal support in the scientific community.
Frage 41
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According to this phylogenetic tree, annelids are most closely related to _____.
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arthropods
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molluscs
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nematodes
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cnidarians
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platyhelminths
Frage 42
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According to this phylogenetic tree, the clade that includes echinoderms and chordates is most closely related to the clade that includes _____.
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molluscs
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poriferans
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nematodes
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cnidarians
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platyhelminths
Frage 43
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According to this phylogenetic tree, cnidarians are most closely related to _____.
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nematodes
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annelids
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molluscs
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echinoderms
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platyhelminths
Frage 44
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According to this phylogenetic tree, chordates are most closely related to _____.
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arthropods
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molluscs
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pariferans
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echinoderms
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cnidarians
Frage 45
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This phylogenetic tree indicates that mammals are most closely related to _____.
Frage 46
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According to this phylogenetic tree, the animals most closely related to reptiles and mammals are _____.
Frage 47
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The group in the red box is
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monophyletic
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polyphyletic
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paraphyletic
Frage 48
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The group in the red box is
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monophyletic
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polyphyletic
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paraphyletic
Frage 49
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The group in the red box is
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monophyletic
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paraphyletic
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polyphyletic
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Accurate taxonomy is based on
Frage 51
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Select all the scenarios that are considered density-independant:
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A coastal region experiencing a flood from heavy spring rains
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A costa rican population of spider monkeys experiencing a food shortage for the first time in a decade
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A wildfire that is destroyed 100 acres of Redwood forest in California.
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A population of gray squirrels experiencing an increase in predation by the red fox population.
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A local farm introducing a new pesticide to corn that targets the short-horned grasshopper.
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A town in New Hampshire whose landfills will be at max capacity in less than one year.
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A population of coyotes that is experiencing an increased occurrence of mange.
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Several countries in South America lost 10% of their population due to experiencing a 8.5 magnitude earthquake.
Frage 52
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Select all the scenarios that are density-dependent:
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A category 5 hurricane caused an atlantic coastal town to lose 10% of their population.
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A wildfire swept through 10 western US farming counties and killed thousands of acres of crops.
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A population of gray squirrels is experiencing a shortage of food for the first time in a decade.
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A population of cottontail rabbits is experiencing an increase in predation by a population of red fox.
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A town in Vermont is experiencing an influx and overflow in their local sewer system.
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A population of white-tailed deer is experiencing an influx in lyme disease.
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A population of Northwestern African cheetah has in influx in male cheetahs to female cheetahs during mating season, causing the males to compete for mates.
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A local farm is introducing a new pesticide to their corn to target the short-horned grasshopper.
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A 8.5 magnitude earthquake destroyed the water supply and killed 500 people across 3 South American countries.
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What states that two species that compete for the exact same resources cannot stably coexist?
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The Principle of Competitive Exclusion
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The Theory of Multicellularity
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The Principle of Resource Partitioning
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The Theory of Evolution
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All of the following factors led to exponential human population growth about a thousand years ago EXCEPT:
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Reduction in disease
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Reduction in human waste
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increase in food supply
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colder climate
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expansion of habitat
Frage 55
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All cells in the human body are genomically equal except for sex cells.
Frage 56
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This image depicts a morphogen gradient that is equally distributed.
Frage 57
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In conditional specification, cells secrete [blank_start]morphogens[blank_end] to influence nearby cells to differentiate.
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morphogens
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gradients
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genes
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mesoderm
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cytoplasm
Frage 58
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Select all the correct statements about mosaic cleavage:
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patterns arise from cytoplasmic specification
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heavily influenced by maternal effect gene products in the egg.
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protostomes
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deuterstomes
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cell fate is fixed after first division
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cell fate is NOT fixed after first division
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cells "regulate" development of nearby undifferentiated cells by producing morphogens
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patterns arise from induction
Frage 59
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Select all the correct statements about regulative cleavage:
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patterns arise from cytoplasmic specification
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cell fate fixed after first division
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heavily influenced by maternal effect gene products in the egg
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protostomes
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deuterstomes
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cell fate is NOT fixed after first division
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cells "regulate" development of nearby cells by producing morphogens
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patterns arise from induction
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[blank_start]Cytoplasmic specification[blank_end] is when blastomeres inherit different amounts of various morphogens during initial stages of zygote division.
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[blank_start]Induction[blank_end] is when morphogen concentrations drop as distance from source cells increases.
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[blank_start]Pattern formation[blank_end] is where body regions and cell types will be formed.
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Pattern formation
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Differentiation
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[blank_start]Differentiation[blank_end] is what type of cell will develop.
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Differentiation
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Pattern formation
Frage 64
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Gradients of morphogens identify major axes. The primary development axes are:
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Anterior-posterior
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Dorsal-ventral
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Superficial-Deep
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Distal-Medial
Frage 65
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Primary morphogen gradients set up gradients in other morphogens.
Frage 66
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code for morphogens that define specific regions in the body.
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contain a short sequence that codes for a homeobox domain.
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are homeobox domains.
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are morphogens.
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are highly conserved genes.
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are arranged in gene clusters.
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are arranged in a radial formation.
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explain consistency of early development among diverse animal phyla
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explain the inconsistencies of development between animal phyla and plant phyla
Frage 67
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The order of Hox genes represents where the gene will be expressed along an animal's [blank_start]anterior-posterior[blank_end] axis.
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anterior-posterior
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dorsal-ventral
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superficial-deep
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distal-medial
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Mutation in [blank_start]Hox genes[blank_end] may explain major morphological changes in evolution.