List the attributes that populations but not individuals possess.
(N/A) population is defined as a group of individuals of the same species residing in a particular geographical area at a particular time and functioning as a unit.
The main attributes or characteristics of a population that individuals do not possess are:
$1$. Birth rate (Natality): It is the ratio of live births in an area to the population of an area. It is expressed as the number of individuals added to the population per capita.
$2$. Death rate (Mortality): It is the ratio of deaths in an area to the population of an area. It is expressed as the loss of individuals per capita.
$3$. Sex ratio: It is the ratio of the number of females to males in a population (e.g.,number of females per $1000$ males).
$4$. Age distribution: It is the percentage of individuals of different ages in a given population. The age distribution pattern is commonly represented through age pyramids.
$5$. Population density: It is defined as the number of individuals of a population present per unit area or volume at a given time.
The main attributes or characteristics of a population that individuals do not possess are:
$1$. Birth rate (Natality): It is the ratio of live births in an area to the population of an area. It is expressed as the number of individuals added to the population per capita.
$2$. Death rate (Mortality): It is the ratio of deaths in an area to the population of an area. It is expressed as the loss of individuals per capita.
$3$. Sex ratio: It is the ratio of the number of females to males in a population (e.g.,number of females per $1000$ males).
$4$. Age distribution: It is the percentage of individuals of different ages in a given population. The age distribution pattern is commonly represented through age pyramids.
$5$. Population density: It is defined as the number of individuals of a population present per unit area or volume at a given time.
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Which of the following countries has the highest population density?
Easy
View SolutionRead the given statements carefully and select the correct ones:
$(1)$ Individuals of the same species together form a population.
$(2)$ Mortality is an important factor for population growth.
$(3)$ Natality (birth rate) is an important factor for the immediate increase in population size.
$(4)$ In commensalism,both organisms benefit from the interaction.
$(1)$ Individuals of the same species together form a population.
$(2)$ Mortality is an important factor for population growth.
$(3)$ Natality (birth rate) is an important factor for the immediate increase in population size.
$(4)$ In commensalism,both organisms benefit from the interaction.
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If in a pond there are $20$ lotus plants of last year and through reproduction $8$ new plants are added. Then the birth rate is
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View SolutionRead the following statements and choose the option with all the correct statements only :
$(A)$ The size of a population for any species is not a static parameter.
$(B)$ Total number is always the most appropriate measure of population density because in all cases it is most meaningful and easy to determine.
$(C)$ $A$ population growing in a habitat with unlimited resources shows initially a lag phase followed by phases of acceleration and deceleration and finally an asymptote.
$(D)$ According to ecologists,life history traits of organisms have evolved in relation to the constraints imposed by the abiotic and biotic components of the habitat in which they live.
Choose the correct answer from the options given below :
$(A)$ The size of a population for any species is not a static parameter.
$(B)$ Total number is always the most appropriate measure of population density because in all cases it is most meaningful and easy to determine.
$(C)$ $A$ population growing in a habitat with unlimited resources shows initially a lag phase followed by phases of acceleration and deceleration and finally an asymptote.
$(D)$ According to ecologists,life history traits of organisms have evolved in relation to the constraints imposed by the abiotic and biotic components of the habitat in which they live.
Choose the correct answer from the options given below :
Medium
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