Q4 Distinguishing Proximate and Ultimate Hypotheses 2 8 Points Limpets of the species Siphonaria gigas (limpets are smal

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Q4 Distinguishing Proximate And Ultimate Hypotheses 2 8 Points Limpets Of The Species Siphonaria Gigas Limpets Are Smal 1 (196.45 KiB) Viewed 16 times

Q4 Distinguishing Proximate and Ultimate Hypotheses 2 8 Points Limpets of the species Siphonaria gigas (limpets are small snails with cone-shaped shells) live in the rocky intertidal region in the tropical Eastern Pacific Ocean. These limpets are a homing species, meaning that they grow their shells to fit the contours of the rock at a particular spot, called a "home scar". The limpets move around when the tide is falling, but they always return back to their home scar when the tide is high. Siphonaria gigas are unusual because they tend to live in pairs-pairs of limpets form home scars right next to each other so that their shells touch each other when both are sitting on their home scars. Why do S. gigas live in pairs? Pick the Level of Analysis that each of the following hypotheses correspond to: Q4.1 S. gigas in pairs are better able to withstand wave action and less likely to get knocked off the rocks (resulting in mortality) than solitary limpets. 1 Point O Ultimate: Fitness O Ultimate: Historical O Proximate: Developmental O Proximate: Causal

Q4.2 S. gigas in pairs have greater reproductive success than solitary limpets because they have easy access to a mate. 1 Point O Ultimate: Fitness O Ultimate: Historical Proximate: Developmental O Proximate: Causal Q4.3 S. gigas follow the chemical trails left by other limpets and establish home scars near these individuals. 1 Point O Ultimate: Fitness O Ultimate: Historical O Proximate: Developmental O Proximate: Causal

Q4.4 Pair living is a derived trait that evolved in the immediate ancestor of S. gigas; related species of limpets do not exhibit pair-living. 1 Point O Ultimate: Fitness Ultimate: Historical Proximate: Developmental O Proximate: Causal Q4.5 Living in pairs is an innate behavior in S. gigas, and does not require learning or experience. 1 Point O Ultimate: Fitness Ultimate: Historical O Proximate: Developmental O Proximate: Causal

Q4.6 S. gigas learn to form home scars in pairs through a trial-and-error process that involves testing various home scar locations. 1 Point O Ultimate: Fitness O Ultimate: Historical Proximate: Developmental O Proximate: Causal Q4.7 S. gigas follow the vibrations of other limpets on the rocks and form home scars near those limpets. 1 Point O Ultimate: Fitness O Ultimate: Historical Proximate: Developmental Proximate: Causal

Q4.8 S. gigas pairs can more effectively defend their home scar territory against invasion by limpets of other species that do not home. 1 Point O Ultimate: Fitness O Ultimate: Historical O Proximate: Developmental O Proximate: Causal