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(B) These variants are called ecophenes (or ecads). Ecophenes are morphological variations within a species that are induced by environmental factors

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Ecophenes

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(B) These variants are called ecophenes (or ecads). Ecophenes are morphological variations within a species that are induced by environmental factors rather than genetic differences. When these variants are grown under uniform environmental conditions,the morphological differences disappear,confirming that they are not genetically distinct. This phenomenon is a classic example of phenotypic plasticity,where the same genotype produces different phenotypes in response to different environmental conditions such as altitude,temperature,or soil $pH$.

$i$. Habitat niche	$a$. In the absence of competition in the habitat
$ii$. Trophic niche	$b$. Position of organism in the environmental gradient
$iii$. Multidimensional niche	$c$. Physical space occupied by an organism
$iv$. Fundamental niche	$d$. Level of organism in the food chain

$A$ plant species shows several morphological variations in response to altitudinal gradient. When grown under similar conditions of growth,the morphological variations disappear and all the variants have common morphology. What are these variants called?

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