BIO 182 Test Questions with Correct Answers

BIO 182 Test Questions with Correct Answers Since the brown tree snake is a keystone species in Guam, it must also be a keystone species in Australia? True or False - Answer-False Native predators of birds in Guam likely decreased in abundance after brown tree snakes arrived. True or False - Answer-True If birds in Guam usually disperse seeds, brown tree snakes likely had a negative indirect effect on plants? True or False - Answer-True Since more prey and fewer predators occur in Guam than in Australia, the density of brown tree snakes in Guam likely exceeds the density in Australia? True or False - Answer-True If some species of the now extinct lizards used to eat birds, brown tree snakes had a positive direct effect and a negative indirect effect on birds? True or False? - Answer- False Burning more coal would likely increase the total amount of methane trapped as ice throughout the globe? True or False? - Answer-False If global warming causes methane to escape from ice, warming will accelerate through positive feedback. True or False? - Answer-True Some of the carbon dioxide that results from the reaction of methane and water will end up in the tissues of plants. True or False? - Answer-True If marine bacteria use methane to grow and reproduce, melting of the methane reserves in the ocean would reduce the carrying capacity of these bacteria. True or False? - Answer-False If CO2 and H2O react to form carbonic acid, global warming could reduce the pH of the ocean. True or False? - Answer-True All of the nitrogen in fertilizers will end up in bodies of water. True or False? - Answer- False If the supply of nitrogen limits the growth of plants, emissions from burning fossil fuels should lead to more biomass of plants. True or false? - Answer-True A teleconnection occurs when nitrogen introduced as fertilizer ends up causing algae to bloom in the ocean. True or False? - Answer-True Negative feedback would occur if emissions of fossil fuel increase the rate of nitrification by bacteria. True or False? - Answer-False Positive feedback occurs when nitrification by bacteria causes the population of bacteria to grow. True or False? - Answer-True The two species have completely different fundamental niches. True or false? - Answer- True An increase in the number of species 2 likely contributed to the decline in species 1. True or False? - Answer-True An increase in competition within species likely contributed to the decline in species 1. True or False? - Answer-True A mutation in species 1 that causes its fundamental niche to diverge from the fundamental niche of species 2 could increase the fitness of species 1. True or False|? - Answer-True If conditions changed in the lake to favor higher concentrations of oxygen, both species would persist at the same levels. True or False? - Answer-False The population reached its carrying capacity in 2007. - Answer-False During , the number of births likely exceeded the number of deaths - Answer- True Between 1996 and 1999, the death rate in the population could have exceeded the birth if immigration from other populations increased greatly - Answer-True