What is the trade off between life expectancy and fecundity?
What is the trade-off between life expectancy and fecundity? An organism has a finite amount of resources. Investing more resources in reproduction means fewer resources available for survival. What is the difference between logistic and exponential growth model predictions when population numbers become high?
What is the defining feature of exponential growth?
Exponential growth is a specific way that a quantity may increase over time. It occurs when the instantaneous rate of change (that is, the derivative) of a quantity with respect to time is proportional to the quantity itself.
Which of the following is a major tradeoff in life histories?
Parental care and fecundity. One major tradeoff in life history strategies is between number of offspring and a parent’s investment in the individual offspring.
Why is long term parental care not associated with having many offspring during a reproductive episode?
Why is long-term parental care not associated with having many offspring during a reproductive episode? Parental care is not feasible for organisms having many offspring because they do not have the energy available to take care of offspring.
Why is there a trade off between survivorship and fecundity quizlet?
Why is there a trade-off between survivorship and fecundity? Resources such as time and energy are limited, so survivorship and fecundity cannot both be maximized simultaneously. What are population dynamics?
What would allow a population to experience exponential growth?
When resources are unlimited, a population can experience exponential growth, where its size increases at a greater and greater rate.
What factors contribute to exponential growth?
Exponential growth assumes that environmental factors like food, water supply, space, shelter, disease organisms, predators, weather conditions, and natural disasters do not affect the birth or death rate. As long as birth rate exceeds death rate (even slightly) population size will increase exponentially.
Can exponential growth continue indefinitely?
In the real world, with its limited resources, exponential growth cannot continue indefinitely. Exponential growth may occur in environments where there are few individuals and plentiful resources, but when the number of individuals becomes large enough, resources will be depleted, slowing the growth rate.
Why do populations grow more slowly as they approach their carrying capacity?
Why do populations grow more slowly as they approach their carrying capacity? Density-dependent factors lead to fewer births and increased mortality. … Sometimes INTRINSIC FACTORS cause the population to increase in mortality and lower reproduction rates to occur in reaction to the stress of overpopulation.
What type of survivorship curve do humans have?
Humans and most primates have a Type I survivorship curve. In a Type I curve, organisms tend not to die when they are young or middle-aged but, instead, die when they become elderly.
How many offspring can an individual have in a lifetime?
One study estimated a woman can have around 15 pregnancies in a lifetime. And depending on how many babies she births for each pregnancy, she’d probably have around 15-30 children.
What type of effect has an increasing impact as the population size increases?
What type of effect has an increasing impact as the population size increases? birth rate and death rate.9 мая 2011 г.
Why can’t a female lizard have both high fecundity and high survival?
Why can’t a female lizard have both high fecundity and high survival? The more energy the female devotes to offspring, the less that can be devoted to her survival.
Are humans Semelparous or Iteroparous?
The term iteroparity comes from the Latin itero, to repeat, and pario, to beget. An example of an iteroparous organism is a human—humans are biologically capable of having offspring many times over the course of their lives. Iteroparous vertebrates include all birds, most reptiles, virtually all mammals, and most fish.