I. Population evolve to maximise their reproductive fitness, also called Darwinian reproductive fitn

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11.Organisms and Populations

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$I.$ Population evolve to maximise their reproductive fitness, also called Darwinian reproductive fitness (higher $r$ value), in the habitat in which they live

$II.$ The population growth rate $r$ is inversely related to generation time

$III.$ The housefly, which has a short life span and produces a large number of eggs, could be considered as a ' $K$ ' selected species

$IV.$ Under a particular set of selection pressures, organisms evolve towards the most efficient reproductive strategies

$V.$ Life history traits of organisms have evolved in relation to the constraints imposed by biotic and abiotic factors in their habitat Select the combination of correct statements

$I, II$ and $III$

$I, III$ and $IV$

All except $III$

Solution

The housefly which has a short life span and produces a large number of eggs could be considered as ' $r$ ' selected species

Depend upon the giving birth their are two type of species

${ }^{\prime} r^{\prime}$ selected speciesorganism of this type give more young ones during their life cycle. Parent care their children less and their size are also little

' $K$ 'Selected Species Organisms of this kind gives less birth during their life cycle. They care more their children. Their size and life span are more than $r$ selected species, $e.g.,$ man, mammal, bird, etc.

Standard 12

Biology

The carrying capacity of a population is determined by its

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Slow growth was due to high birth and high death rate which was at the time of stage of

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The birth and death rates of four countries are given below. Which one will have the least population growth rate?

$Country$ $Birth\, rate$ $/1000$ $Death$ $/1000$

$M$ $15$ $5$

$N$ $25$ $10$

$O$ $35$ $18$

$P$ $48$ $41$

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Population of any species is

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Change in population size equation with prolonged exponential phase can be converted into logistic growth equation by multiplying it with

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$Country$	$Birth\, rate$ $/1000$	$Death$ $/1000$
$M$	$15$	$5$
$N$	$25$	$10$
$O$	$35$	$18$
$P$	$48$	$41$

Solution

Similar Questions

The carrying capacity of a population is determined by its

Slow growth was due to high birth and high death rate which was at the time of stage of

The birth and death rates of four countries are given below. Which one will have the least population growth rate? $Country$ $Birth\, rate$ $/1000$ $Death$ $/1000$ $M$ $15$ $5$ $N$ $25$ $10$ $O$ $35$ $18$ $P$ $48$ $41$

Population of any species is

Change in population size equation with prolonged exponential phase can be converted into logistic growth equation by multiplying it with

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The birth and death rates of four countries are given below. Which one will have the least population growth rate?

$Country$ $Birth\, rate$ $/1000$ $Death$ $/1000$

$M$ $15$ $5$

$N$ $25$ $10$

$O$ $35$ $18$

$P$ $48$ $41$