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Each of the following is an abiotic factor in the environment EXCEPT plant life soil type Rainfall temperature 0% re pe ra tu te m in fa l l 0% Ra lt yp e 0% so i nt lif e 0% pl a 1. 2. 3. 4. Which is a biotic factor that affects the size of a population in a specific ecosystem? .. 0% ox yg en r.. . fp of n tio ce nt ra an d 0% nd so ki th e in nu m be r so il of ty pe co n ft .. eo tu r te m pe ra ge 0% ec os y.. . 0% av er a 1. average temperature of the ecosystem 2. type of soil in the ecosystem 3. number and kinds of predators in the ecosystem 4. concentration of oxygen in the ecosystem During a long period when there is no rainfall, a mountain lion may temporarily leave its usual hunting territory to drink from a farm pond. This behavior is probably due to io t ic ab in an ge ch th e 0% fa ... ... ew an fin d to ne ed its 0% ha . .. ot ic ab i in th e ch an ge to ne ed 0% an fin d di ffe re n. .. 0% its 1. its need to find different foods to eat 2. the change in an abiotic factor in its environment 3. its need to find a new habitat 4. the change in a biotic factor in its environment An interaction in which one organism captures and feeds on another organism is called Competition Symbiosis Mutualism Predation io n ism ut ua l M 0% Pr ed at 0% sis 0% Sy m bi o pe t it io n 0% Co m 1. 2. 3. 4. A symbiosis in which both species benefit is Commensalism Mutualism Competition Parasitism sm 0% as iti Pa r iti Co m pe t ism ut ua l M lis en sa 0% on 0% m 0% Co m m 1. 2. 3. 4. The symbiotic relationship between a flower and the insect that feeds on its nectar is an example of i. . . th e us e be ca n ism en sa l m co m 0% t.. be ca us e be ca 0% us e i.. th e th e se as it i sm be ca u pa r ism m ut ua l 0% . ... 0% pr ed at io 1. mutualism because the flower provides the insect with food, and the insect pollinates the flower 2. parasitism because the insect lives off the nectar from the flower 3. commensalism because the insect does not harm the flower and the flower does not benefit from the relationship 4. predation because the insect feeds on the flower logistic growth growth density exponential growth multiple growth th 0% w th m ul ti pl e gr o ro w lg wt h gr o 0% ex po ne nt ia th w gr o st ic 0% de ns ity 0% lo gi 1. 2. 3. 4. When individuals in a population reproduce at a constant rate, it is called As resources in a population become less available, population growth en te rs ap ... 0% ex po n ha se of gc ap w he sc ar ea se ss lo 0% ac it y ly 0% re ac in cr de c li ne sr ap id ly 0% ry in 1. declines rapidly 2. increases slowly 3. reaches carrying capacity 4. enters a phase of exponential growth In a logistic growth curve, exponential growth is the phase in which the population wt h gr o 0% st op s ... wt h gr o st o be gin ck l ui ws q 0% slo fe w ya nd gc ap ry in gr o he sc ar re ac 0% . .. ac it y 0% w 1. reaches carrying capacity 2. grows quickly and few animals are dying 3. growth begins to slow down 4. growth stops A biotic or an abiotic resource in the environment that causes population size to decrease is a carrying capacity limiting nutrient limiting factor growth factor 0% 0% to r fa c wt h gr o lim iti n gf ac to r 0% gn ut r ie nt lim iti n ry in gc ap a cit y 0% ca r 1. 2. 3. 4. All of the following are limiting factors EXCEPT Immigration Competition Predation Human disturbances 0% an c es io n 0% Hu m an di st ur b Pr ed at iti on 0% Co m pe t m igr at io n 0% Im 1. 2. 3. 4. If a population grows larger than the carrying capacity of the environment, the death rate may rise birthrate may rise death rate must fall birthrate must fall 0% l at e bi rth r h ra te m m us t us t fa l fa l e ris de at bi rth r at e m ay m ay ra te h 0% l 0% ris e 0% de at 1. 2. 3. 4. Which of the following is characteristic of parasitism? 0% or .. . e. liv es i n sid sm an i an ism or g o Tw or g e iv sl an ism or g o Tw 0% sf ee d .. . d an lls ki sm an i or g On e 0% to ge . .. 0% On e 1. One organism kills and consumes another. 2. Two organisms live together and neither is harmed 3. Two organisms feed side by side from the same food. 4. One organism lives in or on another and benefits. An ecosystem is made up of: 0% liv in 0% yi. . y.. . de ca ph an d ng s gt hi gt hi ng s an d ro nm en vi th e en to nl ng s gt hi Ph ys ica l liv in 0% y on ly 0% liv in 1. living things only 2. Physical environment only 3. living things and the physical environment 4. living things and decaying matter When a rabbit population in a meadow cannot grow any larger, it has reached the Climax community Carrying capacity Limiting factor Minimum size M in im um fa ct ng it i Lim ng ry i Ca r 0% o. .. ac . .. ca p un i.. m co m ax 0% s iz e 0% . 0% Cl im 1. 2. 3. 4. A population of rabbits is at its carrying capacity when the population Reproduces becomes extinct stops growing can’t survive 0% e 0% viv ’t su r ca n st op s gr o w in g 0% es ex t in c.. . be co m du ce s 0% Re pr o 1. 2. 3. 4. An unusually cold winter causes the squirrel population to decrease. This is an example of temperature as a 1. carrying capacity 2. Limiting factor 3. Climax community 4. Pattern in space sp a. .. in te rn ax Cl im Pa t co m m fa ct ng it i Lim 0% un i.. c.. . ap a gc ry in ca r 0% . 0% o. .. 0% Which of the following is characteristic of parasitism? an ism s. l.. . sm an i or g o Tw or g o Tw 0% .. 0% or g an ism s. k. .. sm an i or g On e 0% .. 0% On e 1. One organism kills and consumes another. 2. Two organisms live together and neither is harmed 3. One organism lives in or on another and benefits. 4. Two organisms nourish each other; both benefit. Biotic factors in an ecosystem may include: s, fu ng i .. . al an im im an nt s, pl a 0% re ,w al. l.. . ,s oi te r ia ba c 0% ... 0% .. 0% te m pe ra tu 1. bacteria, soil, and water 2. plants, animals, and bacteria 3. temperature, water, and soil 4. animals, fungi, and temperature Certain bacteria living in a human's large intestine help to produce vitamin K. This relationship is an example of Parasitism Mutualism Commensalism Predation io n 0% Pr ed at Co m m en sa lis ism ut ua l M as iti 0% m 0% sm 0% Pa r 1. 2. 3. 4. An herbivore population may 0% o. .. ab ca r th e of all ex ce ed it s ca r ex ce ed it s p eu at os cil l 0% ... 0% ... 0% a. .. 1. oscillate up and down as its major predator increases and decreases in number. 2. exceed its carrying capacity if its major predator is removed. 3. exceed its carrying capacity when it is introduced to a new community. 4. all of the above are true. Which of the following IS NOT an example of mutualism? xin en -fi i( m y. .. ... 0% ni tro g os t ah 0% tf un g l.. . gp er in w af lo 0% sp ec ie s.. . 0% ro o 1. a flowering plant and its pollinator species 2. a host species and its parasite. 3. root fungi (mycorrhizae) and tree species 4. nitrogen-fixing bacteria and their host species Which of the species paired below have a competitive relationship? deer/mountain lion deer/grass deer/sheep deer/hawk k ha w de er / sh ee p de er / ss gr a de er / m ou nt ai n .. . 25% 25% 25% 25% de er / 1. 2. 3. 4. Mice and gophers are eating a farmers’ crop. What variable might the farmer change to alter this ecosystem? iff er en . .. 25% us in gd pe st ici d ls n. .. es . .. 25% 25% se ve ra ad d fe rti l ize th e ... 25% us e 1. fertilize the crops more often. 2. add several snakes to the field. 3. use pesticides to reduce the number of insects. 4. using different farming techniques. Which of the following statements is true? 1. Symbiosis refers to different organisms living together. 2. Members of a symbiotic relationship cannot live without each other. 3. Symbiosis refers to different organisms living together and benefiting from each other. 4. A parasite is not in a symbiosis with its host. A pa ra sit e is . .. re fe .. . sis bi o Sy m em M Sy m bi o be rs sis of a s.. . re fe .. . 25% 25% 25% 25% Of the following types of interactions, which one is least likely to limit population size? .. . od pa ra s iti pe t it io br o Co m m en sa lis io n 25% n 25% 25% m 25% Co m Predation Commensalism Competition brood parasitism Pr ed at 1. 2. 3. 4. When two organisms attempt to utilize the same resource, the result is: pa r ism 25% as it i sm 25% ut ua l Co m m en sa lis on iti 25% m 25% M Competition Commensalism Mutualism parasitism Co m pe t 1. 2. 3. 4.