What are the dissimilarities between a cockro | vedclass

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(B) The correct answer is $B$. In a cockroach,the head is small and triangular,and it is attached to the thorax by a flexible neck,allowing it to move

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Their heads show great mobility in all directions.

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(B) The correct answer is $B$. In a cockroach,the head is small and triangular,and it is attached to the thorax by a flexible neck,allowing it to move in all directions. However,in a frog,the head is somewhat flattened and triangular,and it is fused with the trunk,which restricts its mobility significantly compared to a cockroach. Options $A$,$C$,and $D$ are similarities: both have a complete digestive system,both are unisexual (dioecious),and both possess paired appendages (legs/limbs).

Column $I$	Column $II$
$(a)$ Compound epithelium	$(i)$ Alimentary canal
$(b)$ Compound eye	$(ii)$ Cockroach
$(c)$ Septal nephridia	$(iii)$ Skin
$(d)$ Open circulatory system	$(iv)$ Mosaic vision
$(e)$ Typhlosole	$(v)$ Earthworm
$(f)$ Osteocytes	$(vi)$ Phallomere
$(g)$ Genitalia	$(vii)$ Bone

What are the dissimilarities between a cockroach and a frog?

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