Population attributes: growth, birth and death rate, age distribution

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Which one of the following equations represents the Verhulst-Pearl Logistic Growth of population? Answer: 2. dN/dt = rN((K - N)/K) Key idea: The Verhulst-Pearl logistic equation includes the carrying capacity K. dN/dt=rN(K-N/K) When N is... Population attributes: growth, birth and death rate, age distribution 1 answer
The equation of Verhulst-Pearl logistic growth isdN/dt = rN≤ft[K-N/K].From this equation, K indicates: Answer: 4. Carrying capacity Key idea: in the Verhulst-Pearl logistic equation, K is the carrying capacity. In dN/dt=rN[K-N/K] , N is popula... Population attributes: growth, birth and death rate, age distribution 1 answer
Match List I with List II.List I: A. Logistic growth; B. Exponential growth; C. Expanding age pyramid; D. Stable age pyramidList II: I. Unlimited resource availability condition; II. Limited resource availability condition; III. The percent individua… Answer: 2. A-II, B-I, C-III, D-IV Key idea: Link each growth form or pyramid to its condition. Logistic growth: limited resources (II). Expo... Population attributes: growth, birth and death rate, age distribution 1 answer
If '8' Drosophila in a laboratory population of '80' died during a week, the death rate in the population is ______ individuals per Drosophila per week. Answer: 2. 0.1 Key idea: Death rate per individual = deaths ÷ population size. death rate = 8/80 = 0.1 individuals per Drosophila per week. Population attributes: growth, birth and death rate, age distribution 1 answer
In the exponential growth equation N_t=N_0e^rt, e represents : Answer: 3. The base of natural logarithms In N_t=N₀e^rt , e is Euler's number (about 2.718), the base of natural logarithms. The other names... Population attributes: growth, birth and death rate, age distribution 1 answer
Which of the following is not an attribute of a population ? Answer: 4. Species interaction Key idea: Attributes of a population are properties of the group as a whole, not of individuals or of interac... Population attributes: growth, birth and death rate, age distribution 1 answer
In a growing population of a country, Answer: 1. pre-reproductive individuals are more than the reproductive individuals. Key idea: The age pyramid shape shows population growth.... Population attributes: growth, birth and death rate, age distribution 1 answer
Natality refers to Answer: 3. Birth rate Natality is the birth rate of a population, the number of births per unit time. Death rate is mortality; leaving the h... Population attributes: growth, birth and death rate, age distribution 1 answer
Asymptote in a logistic growth curve is obtained when : Answer: 1. K = N In the logistic growth curve the upper asymptote is reached when the population size N equals the carrying capacity K , so... Population attributes: growth, birth and death rate, age distribution 1 answer
Which of the following is correct for r-selected species? Answer: 4. Large number of progeny with small size r-selected species have a high intrinsic rate of increase: they produce a large number of... Population attributes: growth, birth and death rate, age distribution 1 answer
When does the growth rate of a population following the logistic model equal zero ? The logistic model is given as dN/dt = rN(1-N/K) : Answer: 1. when N/K is exactly one. Logistic growth: dN/dt=rN(1-N/K) . The growth rate is zero when 1-N/K=0 , that is when N/K=1 exactly (N... Population attributes: growth, birth and death rate, age distribution 1 answer