231151
In the following equation of Verhulst- Pearl logistic growth, the letter ' $r$ ' denotes------. $\frac{d N}{d t}=r N\left(\frac{K-N}{K}\right)$
1 Extrinsic rate of natural increase
2 Intrinsic rate of natural increase
3 Carrying capacity
4 Population density
Explanation:
Verhulst - Pearl logistic growth equation - $\frac{\mathrm{dN}}{\mathrm{dt}}=\mathrm{rN}\left(\frac{\mathrm{K}-\mathrm{N}}{\mathrm{K}}\right)$ Here, $r=$ The intrinsic rate of growth. $\mathrm{N}=$ The number of organisms in a population. $\mathrm{K}=$ The carrying capacity
Karnataka CET-2020 / Karnataka CET-2018
Organisms and Populations
231152
The type of population where pre-reproductive animals occur in large numbers:
1 Declining
2 Fluctuating
3 Stable
4 Growing
Explanation:
: In a growing population, where number of reproductive individuals indicates large number increase in population. - Declining population- A population decline (sometimes under population or depopulation or population collapse) in humans is a reduction in a human population size. - Fluctuating-population fluctuation, populations rarely grow smoothing up to the carrying capacity and then remain this. Instead, fluctuations in population number, abundance, or density from one time step to the next are the norm. - Stable population- The term stable population refers to a population with an unchanging (but possibly non zero) rate of growth and an unchanging age composition.
AP EAMCET-2005
Organisms and Populations
231153
The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show ?
1 The population of its predators increases enormously
2 S-shaped or sigmoid growth of this insect
3 The food plants mature and die at the end of the rainy season
4 Its population growth curve is of J-type
Explanation:
Its population growth curve is $\mathrm{j}$-shaped in which the density increases rapidly in an exponential fashion and then stops abruptly as environmental resistance or another limiting factor becomes effective more or less suddenly. - A sigmoid growth curve is an S- shaped curve, that can be used to model functions that increases gradually at first, more rapidly in middle and slow at end. - Sigmoid growth curve is seen in stable populations sharing a defined geographical space.
AIPMT-2007
Organisms and Populations
231154
Geometric representation of age structure is a characteristic of :-
1 Ecosystem
2 Biotic community
3 Population
4 Landscape
Explanation:
Geometric representation of age structure is a characteristic of population. - In most populations, individuals are of different ages. The proportion of individual in each age group is called as the age structure of that population. Ecosystem- A geographical area where plants. animals and weather work together to form a bubble of life. Biotic community - That places where group of organisms live together and interact with each other.
231151
In the following equation of Verhulst- Pearl logistic growth, the letter ' $r$ ' denotes------. $\frac{d N}{d t}=r N\left(\frac{K-N}{K}\right)$
1 Extrinsic rate of natural increase
2 Intrinsic rate of natural increase
3 Carrying capacity
4 Population density
Explanation:
Verhulst - Pearl logistic growth equation - $\frac{\mathrm{dN}}{\mathrm{dt}}=\mathrm{rN}\left(\frac{\mathrm{K}-\mathrm{N}}{\mathrm{K}}\right)$ Here, $r=$ The intrinsic rate of growth. $\mathrm{N}=$ The number of organisms in a population. $\mathrm{K}=$ The carrying capacity
Karnataka CET-2020 / Karnataka CET-2018
Organisms and Populations
231152
The type of population where pre-reproductive animals occur in large numbers:
1 Declining
2 Fluctuating
3 Stable
4 Growing
Explanation:
: In a growing population, where number of reproductive individuals indicates large number increase in population. - Declining population- A population decline (sometimes under population or depopulation or population collapse) in humans is a reduction in a human population size. - Fluctuating-population fluctuation, populations rarely grow smoothing up to the carrying capacity and then remain this. Instead, fluctuations in population number, abundance, or density from one time step to the next are the norm. - Stable population- The term stable population refers to a population with an unchanging (but possibly non zero) rate of growth and an unchanging age composition.
AP EAMCET-2005
Organisms and Populations
231153
The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show ?
1 The population of its predators increases enormously
2 S-shaped or sigmoid growth of this insect
3 The food plants mature and die at the end of the rainy season
4 Its population growth curve is of J-type
Explanation:
Its population growth curve is $\mathrm{j}$-shaped in which the density increases rapidly in an exponential fashion and then stops abruptly as environmental resistance or another limiting factor becomes effective more or less suddenly. - A sigmoid growth curve is an S- shaped curve, that can be used to model functions that increases gradually at first, more rapidly in middle and slow at end. - Sigmoid growth curve is seen in stable populations sharing a defined geographical space.
AIPMT-2007
Organisms and Populations
231154
Geometric representation of age structure is a characteristic of :-
1 Ecosystem
2 Biotic community
3 Population
4 Landscape
Explanation:
Geometric representation of age structure is a characteristic of population. - In most populations, individuals are of different ages. The proportion of individual in each age group is called as the age structure of that population. Ecosystem- A geographical area where plants. animals and weather work together to form a bubble of life. Biotic community - That places where group of organisms live together and interact with each other.
231151
In the following equation of Verhulst- Pearl logistic growth, the letter ' $r$ ' denotes------. $\frac{d N}{d t}=r N\left(\frac{K-N}{K}\right)$
1 Extrinsic rate of natural increase
2 Intrinsic rate of natural increase
3 Carrying capacity
4 Population density
Explanation:
Verhulst - Pearl logistic growth equation - $\frac{\mathrm{dN}}{\mathrm{dt}}=\mathrm{rN}\left(\frac{\mathrm{K}-\mathrm{N}}{\mathrm{K}}\right)$ Here, $r=$ The intrinsic rate of growth. $\mathrm{N}=$ The number of organisms in a population. $\mathrm{K}=$ The carrying capacity
Karnataka CET-2020 / Karnataka CET-2018
Organisms and Populations
231152
The type of population where pre-reproductive animals occur in large numbers:
1 Declining
2 Fluctuating
3 Stable
4 Growing
Explanation:
: In a growing population, where number of reproductive individuals indicates large number increase in population. - Declining population- A population decline (sometimes under population or depopulation or population collapse) in humans is a reduction in a human population size. - Fluctuating-population fluctuation, populations rarely grow smoothing up to the carrying capacity and then remain this. Instead, fluctuations in population number, abundance, or density from one time step to the next are the norm. - Stable population- The term stable population refers to a population with an unchanging (but possibly non zero) rate of growth and an unchanging age composition.
AP EAMCET-2005
Organisms and Populations
231153
The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show ?
1 The population of its predators increases enormously
2 S-shaped or sigmoid growth of this insect
3 The food plants mature and die at the end of the rainy season
4 Its population growth curve is of J-type
Explanation:
Its population growth curve is $\mathrm{j}$-shaped in which the density increases rapidly in an exponential fashion and then stops abruptly as environmental resistance or another limiting factor becomes effective more or less suddenly. - A sigmoid growth curve is an S- shaped curve, that can be used to model functions that increases gradually at first, more rapidly in middle and slow at end. - Sigmoid growth curve is seen in stable populations sharing a defined geographical space.
AIPMT-2007
Organisms and Populations
231154
Geometric representation of age structure is a characteristic of :-
1 Ecosystem
2 Biotic community
3 Population
4 Landscape
Explanation:
Geometric representation of age structure is a characteristic of population. - In most populations, individuals are of different ages. The proportion of individual in each age group is called as the age structure of that population. Ecosystem- A geographical area where plants. animals and weather work together to form a bubble of life. Biotic community - That places where group of organisms live together and interact with each other.
231151
In the following equation of Verhulst- Pearl logistic growth, the letter ' $r$ ' denotes------. $\frac{d N}{d t}=r N\left(\frac{K-N}{K}\right)$
1 Extrinsic rate of natural increase
2 Intrinsic rate of natural increase
3 Carrying capacity
4 Population density
Explanation:
Verhulst - Pearl logistic growth equation - $\frac{\mathrm{dN}}{\mathrm{dt}}=\mathrm{rN}\left(\frac{\mathrm{K}-\mathrm{N}}{\mathrm{K}}\right)$ Here, $r=$ The intrinsic rate of growth. $\mathrm{N}=$ The number of organisms in a population. $\mathrm{K}=$ The carrying capacity
Karnataka CET-2020 / Karnataka CET-2018
Organisms and Populations
231152
The type of population where pre-reproductive animals occur in large numbers:
1 Declining
2 Fluctuating
3 Stable
4 Growing
Explanation:
: In a growing population, where number of reproductive individuals indicates large number increase in population. - Declining population- A population decline (sometimes under population or depopulation or population collapse) in humans is a reduction in a human population size. - Fluctuating-population fluctuation, populations rarely grow smoothing up to the carrying capacity and then remain this. Instead, fluctuations in population number, abundance, or density from one time step to the next are the norm. - Stable population- The term stable population refers to a population with an unchanging (but possibly non zero) rate of growth and an unchanging age composition.
AP EAMCET-2005
Organisms and Populations
231153
The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show ?
1 The population of its predators increases enormously
2 S-shaped or sigmoid growth of this insect
3 The food plants mature and die at the end of the rainy season
4 Its population growth curve is of J-type
Explanation:
Its population growth curve is $\mathrm{j}$-shaped in which the density increases rapidly in an exponential fashion and then stops abruptly as environmental resistance or another limiting factor becomes effective more or less suddenly. - A sigmoid growth curve is an S- shaped curve, that can be used to model functions that increases gradually at first, more rapidly in middle and slow at end. - Sigmoid growth curve is seen in stable populations sharing a defined geographical space.
AIPMT-2007
Organisms and Populations
231154
Geometric representation of age structure is a characteristic of :-
1 Ecosystem
2 Biotic community
3 Population
4 Landscape
Explanation:
Geometric representation of age structure is a characteristic of population. - In most populations, individuals are of different ages. The proportion of individual in each age group is called as the age structure of that population. Ecosystem- A geographical area where plants. animals and weather work together to form a bubble of life. Biotic community - That places where group of organisms live together and interact with each other.
