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What is the adaptation of a sled dog's (such as a Husky) thick coat of hair to help it withstand the cold temperatures of Arctic winters and a dog that adapts to cold temperatures in the fall by growing a thickened coat? the adaptation of the sled dog best describes adaptation at the ______ level while the dog exposed to seasonal colder temperatures has _____ Population; physiological modifications at the individual level TERM 2 Evolution occurs as a result of DEFINITION 2 Better survival or reproduction rates by individuals with a particular characteristic TERM 3 Which of the following is physiological modification used to adapt to environmental conditions? DEFINITION 3 Leaves becoming thick and leathery on a plant growing in a dry, hot climate TERM 4 Natural selection will ultimately make a species DEFINITION 4 better adapted to its environment TERM 5 Regular lawn mowing elects for short-headed rather than tall-headed dandelions because DEFINITION 5 Tall flowers cannot reproduce
Cheetahs can ran extremely fast because An ancestor that was able to run fast had an advantage and passed those genes on to its offspring TERM 7 Tolerance limits are _______ that limit a species' survival DEFINITION 7 Any environmental conditions TERM 8 A species can withstand a wide range of pH as an adult but the juveniles can only withstand a narrow range of pH. The abiotic factor, pH, would best be described as a DEFINITION 8 Critical factor TERM 9 There is/are usually ______ tolerance limit(s) responsible for limiting the number and location of species. However, some organisms have _______ that limit(s) their distribution DEFINITION 9 many; a specific critical factor TERM 10 Which of the following fish species would be the best indicator of clean, well-oxygenated water DEFINITION 10 Rainbow trout
Certain night-active moths and day-active birds are specialized nectar feeders. how do theses species coexist if they are using the same resources for food? They do not compete for the nectar because they feed at different times of the day TERM 17 Human can best be described as DEFINITION 17 Generalists TERM 18 Most organisms' niches are controlled by DEFINITION 18 Genetic determinants TERM 19 Resource partitioning leads species to DEFINITION 19 feed at different times, utilize slightly different prey, development different physiological adaptations, live in slightly different regions ALL THESE WOULD BE A RESULT OF RESOURCE PARTITIONING TERM 20 Resource partitioning tends to lead a high degree of _______ in species DEFINITION 20 Specialization
A titmouse and a chickadee are living int the same territory and are using some of the same resources. The best way to classify this interaction is Interspecific competition TERM 22 Interspecific competition is competition among _____ for resources DEFINITION 22 members of a single species TERM 23 Which of the following is not a common strategy for successful interspecific competition? DEFINITION 23 The life cycle of dragonflies (the larva live in the water) TERM 24 An especially effective strategy for reducing interspecific competition is DEFINITION 24 different ecological niches for juveniles and adults TERM 25 Territoriality is an important form of ______ for many animal species. DEFINITION 25 Interspecific competition
A viceroy butterfly that closely resembles the bad tasting monarch is an example of _____ and the example of beetles that look like stinging wasps is an example of _____ batesian mimicry; batesian mimicry TERM 32 A keystone species is a species whose presence DEFINITION 32 Influences the population size of many other species in its community TERM 33 In a commensal relationship, DEFINITION 33 One species benefits while the other neither suffers nor benefits TERM 34 Epiphytes growing on tropical trees exemplify DEFINITION 34 Commensalism TERM 35 A biological community's productivity is a measure of DEFINITION 35 the amount of biomass produced in the community
"Abundance" describes the total number of ______ while "diversity" describes the number of ______. organisms in a community; species in a community TERM 37 In a biological community where diversity is great, such as a tropical rainforest, the abundance of any one species is likely to be DEFINITION 37 Small TERM 38 As a rule, near the Earth's north and south poles DEFINITION 38 Abundance is high and diversity is low TERM 39 Complexity in an ecological community has to do with the number of DEFINITION 39 Species at each trophic level TERM 40 A community with hundreds of different types of primary producers, a few herbivores and only one carnivore, has DEFINITION 40 Little complexity
Which of the following are pioneer species? Lichens TERM 47 As ecological development proceeds, a biological community DEFINITION 47 become more diverse TERM 48 some communities, such as some grasslands, may never really reach F.E Clements's concept of a climax stage because DEFINITION 48 They are adapted to periodic interruption TERM 49 The most common reason that introduced species cause trouble is because they DEFINITION 49 Disrupt pre-existing niches
