Which of the following habitat and life history traits would you expect in a species that reproduces sexually, reaches sexual maturity relatively quickly, and provides little parental care? Choose all that apply. A heavy parasite load A predictable environment A low parasite load An unpredictable environment A small number of eggs per reproductive effort A large number of eggs per reproductive effort
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- Brood parasites ensure their reproductive success by the following mechanisms EXCEPT O a. making their host vulnerable to predation O b. producing eggs closely resembling that of the host O C. producing young that give off smells and sounds similar to those of the host O d.producing a large number of eggs O e. utilizing the host parental care mechanismsWhat characteristics are common to r-selected species? Choose All That Apply Rapid development and early reproductive maturity O Small intrinsic growth rates Small offspring and significant parental care Large numbers of offspring per reproductive eventIn all eusocial species, sterile workers assist fertile ____ with whom they share genes. a. dominant animals b. subordinate animals c. offspring d. relatives e. leaders
- Many factors influence a species mode of reproduction. Use the descriptions of the following species to predict what system of hermaphroditism they probably display. 1. Individuals rarely disperse once they are sexually mature, and the largest males get the most matings. Females protect the eggs. [Select] 2. Resources are of uniform quality and evenly dispersed, so males are unable to monopolize them. Females are larger than males; Males protect the eggs. [Select] 3. Individuals are solitary, rarely meet others, and have no way of knowing the sex ratio in the population. There is no parental care. [Select] [Select] protogynous hermaphrodite continuous hermaphrodite protoandrous hermaphroditeTejaTscharntke’s studies of the food web associated with Phragmites reeds revealedthat:a.only a single parasitoid species can persist exploiting a single speciesof herbivore.b.only a single herbivore species can persist attacking a single speciesof plant.c.predation by birds actually protects herbivores, because the birds feedon parasitoid-infested herbivore galls but not uninfested galls.d.within local food webs, all interactions tend to be of roughly the samestrength.e.recognizing variation in interaction strength can greatly simplify thedepiction of a food web.According to Emery's rule slavemaking ants parasitize the nests of: other slavemaking ant species plant-sucking aphid species. distantly related ant species O closely related ant species
- Which of the following observations is NOT an example of intra-sexual competition? Killing young individuals who are not oneâ s own offspring Guarding harem one has secured Having a specialized penile morphology that can displace other malesâ sperms Having a showy display to attract a mateUsing the figure provided, which curve implies that an animal may lay thousands of eggs per year with a regular number dying each year? 1000 Туре 1 100 Type II 10 Type III Age O Type I O Type II O Type III O none of the above a op A insort sc %24 4 & 5 8 Log Number of Survivors (a,) oooThe way an individual's energy is divided among growth, maintenance, and reproduction is controlled by the species' genes and is shaped by natural selection. Different species divide their energy in different ways, but the way energy is divided results in the greatest given the species' niche. O body size o individual survival o lifetime reproductive success
- What is Bateman's principle? Bateman's principle Lots of sperm Feweggs Sperm must compete over eggs Vria iepaduivesc ie mudigae in males tan in female The vane isame ete emity of sa elecion Males must compete overfemales Lots of sperm Feweggs A Terrnitoral males direct more courtship dispiays towards females that have shown up on their teritory for the first time compared to long term females companions. Males must maimce the number of mates Preferencefor "new females A single bird eggmay constitute 15-20% of female's body mass Lots of sperm Few eggs Females must maimize reproductive success per egg CS Scanned with CamScannerMost species produce more offspring than can survive in the environment due to limited resources. O True O FalseYou are studying the effect that the commonly used agricultural pesticide "Pestkill" that has been found in bodies of water has on the survival rate of eggs of dragonflies. How will you label your X and Y axes? Check all that apply. Pestkill concentration (mg)" as Y axis label, "percentage of eggs hatched in two weeks" as X axis label "Pestkill" as X axis label, "number of eggs" on Y axis "Pestkill" as Y axis label, "number of eggs" on X axis "Pestkill concentration (mg)" as X axis label, "percentage of eggs hatched in two weeks" as Y axis label