What is Darwinian fitness?
What is Darwinian fitness?
Populations evolve to maximise their reproductive fitness in the habitat in which they live.
- Under a particular set of selection pressures, organisms evolve towards the most efficient reproductive strategy.
$\rightarrow$ Some organisms breed only once in their life time(pacific salmon fish, bamboo).
$\Rightarrow \quad$ Some reproduces many times during their life time(most birds and mammals)
$\rightarrow$ Some organisms produce a large number of small sized offspring (oyster, pelagic fishes)
$\Rightarrow$ Some organisms produce small number of large sized offspring (birds, mammals)
Life history traits of organisms have evolved in relation to the constraints imposed by the biotic and abiotic components of the habitat in which they live.
Similar Questions
$A$ : Estuary constitutes one of the most productive ecosystem.
$R$ : It represents transition zone between two populations of a species.
$A$ : Estuary constitutes one of the most productive ecosystem.
$R$ : It represents transition zone between two populations of a species.
Explain competition in detail.
Explain competition in detail.
Find out incorrect match
Find out incorrect match
Select the correct match
$(I)$
$(II)$
$(III)$
$(a)$ $+$
$(i)$ $-$
$(P)$ Amensalism
$(b)$ $-$
$(ii)$ $-$
$(Q)$ Commensalism
$(c)$ $-$
$(iii)$ $0$
$(R)$ Predation
$(d)$ $+$
$(iv)$ $0$
$(S)$ Competition
Select the correct match
| $(I)$ | $(II)$ | $(III)$ |
| $(a)$ $+$ | $(i)$ $-$ | $(P)$ Amensalism |
| $(b)$ $-$ | $(ii)$ $-$ | $(Q)$ Commensalism |
| $(c)$ $-$ | $(iii)$ $0$ | $(R)$ Predation |
| $(d)$ $+$ | $(iv)$ $0$ | $(S)$ Competition |
- [AIIMS 2019]
When births are equal to deaths. It is called
When births are equal to deaths. It is called