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- The species to which this population belongs, invests very little into parental care True FalseIn an iteroparous species lifetime fitness is maximized at investment, while in semelparous species level of reproductive an intermediate maximal effort is exerted in a single reproductive event Maximal an intermediate effort is exerted in one of many reproductive events an intermediate minimal effort is exerted in a single reproductive event maximal an intermediate effort is exerted in a single reproductive event an intermediate maximal effort is exerted in one of many reproductive eventsWhat is often true of a population of organisms with a type Il suvivorship curve? they produce few offspirng and invest more energy in each offspring they produce more offspring and invest little energy in each they have low death rates during early life stages they are equally likely to die at any age
- Figure 45.10b If the major food source of the seals declines due to pollution or overfishing, which of the following would likely occur? The carrying capacity of seals would decrease, as would the seal population. The carrying capacity of seals would decrease, but the seal population would remain the same. The number of seal deaths would increase but the number of births would also increase, so the population size would remain the same. The carrying capacity of seals would remain the same, but the population of seals would decrease.Which of the following is associated with multiple reproductive episodes during a species’ lifetime? semiparity iteroparity semelparity fecundityMatch the type of organisms with the appropriate type of offspring production. Birds v [ Choose ] Viviparity Ovoviviparity Oviparity Some sharks Gorillas [ Choose ] Most if not all frogs [ Choose ] Mice [ Choose ]
- What is often true of a population of organisms with a type Ill suvivorship curve? they produce few offspirng and invest more energy in each offspring they produce more offspring and invest little energy in each they have low death rates during early life stages they are equally likely to die at any ageWhat 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 eventExplain the trade-off between number of offspring and amount of parental investment per offspring. The trade-offs of parenting Parental investment expenditure of time and energy on one offspring Pros: parental investment may inorease the chances of an offspring to sunvive and reproduce w net l e Cons parental in vestmentreduces the parent's abilityb generate additional offspring Parental investmentis a limitedresource Why do males and females have different reproductive strategies? Why do males in many species employ a number-of-offspring strategy while females employ the parental investment strategy? Females are more likely to gain from parental investment: Evolution of sexual reproduction 1. The of tspring they care for have 100% c carrying their genes Divergent selection that favored two alternative reproductive strategies % chance of 2. Their gain from multiple mates is limitedbetter to nvest in parenting than in mating 1. Numberof-ofthoring sategy Individuab whose gametes are good…
- Is the following case study an r-strategist or a K-strategist? American toads practice explosive reproduction. During the first warm days in spring, both males and females migrate from forests and converge on ponds. Reproduction is quick, taking only a few days. Females lay hundreds of eggs in jelly-filled sacks along the sides of the pond or stream. As soon as the eggs are laid, males and females abruptly leave the pond. Offspring are left to develop, hatch, and grow on their own, maturing in about three months.Two animals of different species would be least likely to O produce fertile offspring (offspring that can make babies together) O eat the same food O have similar body structures O live successfully in the same habitat Quiz saved at e O O Oon Fish larvae and breeders have higher nutrient requirement than those in grow-out stage. Select one: O True zof O False