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(B) To arrange these organisms in ascending order of complexity (from simple to complex),we analyze their biological structure:$1$. $b$ - Viroids: The

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$b-d-c-e-a$

Vedclass · Answer

(B) To arrange these organisms in ascending order of complexity (from simple to complex),we analyze their biological structure:$1$. $b$ - Viroids: These are the simplest infectious agents,consisting only of a short strand of circular single-stranded $RNA$ without a protein coat.$2$. $d$ - Virus: These are slightly more complex than viroids,consisting of genetic material ($DNA$ or $RNA$) enclosed in a protein coat (capsid).$3$. $c$ - Bacteria: These are unicellular prokaryotic organisms with a complex cell wall and cellular machinery.$4$. $e$ - Algae: These are eukaryotic organisms,which are more complex than prokaryotes due to the presence of membrane-bound organelles and a nucleus.$5$. $a$ - Animal: These are multicellular,complex eukaryotic organisms with specialized tissues and organ systems.Therefore,the correct order is $b-d-c-e-a$.

Column $- I$	Column $- II$
$(a)$ Saprophyte	$(i)$ Symbiotic association of fungi with plant roots
$(b)$ Parasite	$(ii)$ Decomposition of dead organic materials
$(c)$ Lichens	$(iii)$ Living on living plants or animals
$(d)$ Mycorrhiza	$(iv)$ Symbiotic association of algae and fungi

Column-$I$ (Scientists)	Column-$II$ (Discovery)
$A$. Ernst Mayr	$I$. Discovered Viroids
$B$. Whittaker	$II$. Gave the name virus
$C$. Ivanowsky	$III$. Proposed five kingdom classification
$D$. Diener	$IV$. Evolutionary biology

Arrange the following microbes/organisms in ascending order according to their complexity of body (from simple to complex):
$a$ - animal,$b$ - viroids,$c$ - bacteria,$d$ - virus,$e$ - algae.

Similar Questions

Which of the following organisms is unicellular?

In the $3$-domain system of classification,into which domain are prokaryotic and eukaryotic organisms divided?

$A$: Unicellular eukaryotes are included in Monera.
$R$: Unicellular eukaryotes have $70S$ cytoribosomes.

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Arrange the following microbes/organisms in ascending order according to their complexity of body (from simple to complex):$a$ - animal,$b$ - viroids,$c$ - bacteria,$d$ - virus,$e$ - algae.