STD 11 - 17. Locomotion and movement — BIOLOGY STD 11 Science — Question

$(i)$ Each step or rank in hierarchy is called taxonomic category.

$(ii)$ Species is a group of individual organisms with fundamental similarities capable of breeding among themselves.

$(iii)$ Taxonomic studies of all unknown organisms have led to the development of common categories like kingdom, phylum or division, class, order, family, genus and species.

$(iv)$ Lower the category, greater is the difficulty of determining the relationship to other taxa at the same level.

$\begin{array}{|l|l|} \hline Column\;-I  & Column\;-II \\ \hline A.\;Micro\;filament & i.\;Glycokalyx \\ \hline B.\;Micro\;tubule & ii.\;Actin \\ \hline C.\;Flagella  & iii.\;Tubulin \\ \hline D.\;Outer\;layer\;of\;bacteria & iv.\;Outer\;compartment \\ \hline \end{array}$

List $I$                                List $II$

$a$.Lysosome                    $1$.Bacteria without cell walls

$b$.Mycoplasma                $2$.A virus that infects bacterial cells

$c$.Thylakoid                     $3$.Flattened sacs in a chloroplast

$d$.Bacteriophage             $4$.A vesicle in which hydrolytic enzymes are stored

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