A: Living organisms obtain various molecules | vedclass

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(B) Living organisms are open systems that interact with their environment to acquire essential nutrients,molecules,and elements required for survival

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$A$ and $R$ are both true,but $R$ is not the correct explanation of $A$.

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(B) Living organisms are open systems that interact with their environment to acquire essential nutrients,molecules,and elements required for survival. This is represented by statement $A$. Simultaneously,living organisms possess metabolic pathways to synthesize complex organic compounds (like proteins,lipids,and nucleic acids) from simpler precursors,which are essential for their growth,repair,and maintenance. This is represented by statement $R$. While both statements are scientifically accurate,statement $R$ does not explain why organisms must obtain molecules from the environment; rather,it describes an additional capability of living systems. Therefore,both are true,but $R$ is not the correct explanation of $A$.

$(a)$ Inhibitor of catabolic reaction	$(i)$ Ricin
$(b)$ Contains peptide bond	$(ii)$ Malonate
$(c)$ Cell wall material in fungi	$(iii)$ Chitin
$(d)$ Secondary metabolite	$(iv)$ Collagen

$A$: Living organisms obtain various molecules and elements from their environment.
$R$: Living organisms synthesize components essential for their body.

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$A$: Living organisms obtain various molecules and elements from their environment.$R$: Living organisms synthesize components essential for their body.