$A$: Different ecotypes of a species,despite being genotypically different,are interfertile.
$R$: They are locally natural selections from a pool of genetic variations found in the gene pool of a species.
$R$: They are locally natural selections from a pool of genetic variations found in the gene pool of a species.
- AAssertion and Reason both are correct and Reason is the correct explanation of Assertion.
- BAssertion and Reason both are correct but Reason is not the correct explanation of Assertion.
- CAssertion is correct,but Reason is incorrect.
- DBoth Assertion and Reason are incorrect.
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Similar Questions
$X$ - In deep-sea hydrothermal vents,the average temperature is between $25^{\circ}C$ to $30^{\circ}C$.
$Y$ - Reptiles and amphibians are eurythermal.
$Y$ - Reptiles and amphibians are eurythermal.
Medium
View SolutionMatch the columns:
Column-$I$ Column-$II$ $(a)$ Cacti $(i)$ Leguminous plants $(b)$ Shade loving plants $(ii)$ Commensalism $(c)$ Halophytes $(iii)$ Pioneer community $(d)$ Crustose lichen $(iv)$ Plants growing in saline environment $(e)$ Interspecific interaction $(v)$ Xerophytes $(f)$ Rhizobium $(vi)$ Sciophytes
| Column-$I$ | Column-$II$ |
|---|---|
| $(a)$ Cacti | $(i)$ Leguminous plants |
| $(b)$ Shade loving plants | $(ii)$ Commensalism |
| $(c)$ Halophytes | $(iii)$ Pioneer community |
| $(d)$ Crustose lichen | $(iv)$ Plants growing in saline environment |
| $(e)$ Interspecific interaction | $(v)$ Xerophytes |
| $(f)$ Rhizobium | $(vi)$ Sciophytes |
Medium
View SolutionDeath is important because it ......
Medium
View SolutionWhich of the following statements is correct?
$I.$ In a population,birth rate and death rate refer to per capita births and deaths,respectively.
$II.$ In nature,we rarely find isolated single individuals of any species.
$III.$ The size of a population for any species is a stable phenomenon.
$IV.$ Ecological effects of any factors on population growth are generally reflected in its size/population density.
$I.$ In a population,birth rate and death rate refer to per capita births and deaths,respectively.
$II.$ In nature,we rarely find isolated single individuals of any species.
$III.$ The size of a population for any species is a stable phenomenon.
$IV.$ Ecological effects of any factors on population growth are generally reflected in its size/population density.
Medium
View SolutionRead the given statements and identify the correct and incorrect ones.
$(1)$ The exponential growth curve can be calculated using the formula $N_t = N_0 e^{rt}$.
$(2)$ Bamboo and salmon fish show the production of offspring only once during their entire lifespan.
$(3)$ In the amensalism type of interaction,one species is harmed and the other species receives no benefit or harm.
$(4)$ $A$ competitively superior species eliminates the inferior species in a habitat.
$(1)$ The exponential growth curve can be calculated using the formula $N_t = N_0 e^{rt}$.
$(2)$ Bamboo and salmon fish show the production of offspring only once during their entire lifespan.
$(3)$ In the amensalism type of interaction,one species is harmed and the other species receives no benefit or harm.
$(4)$ $A$ competitively superior species eliminates the inferior species in a habitat.
Medium
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