Help with Biology? analogy and question?

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mycorrihizae : plant roots ::

a) mitochondria : eukaryotic cells
b) ribosomes : nucleus
c) mitochondria : nucleus
d) nucleus : mitochondria

and what characteristics did the first terrestrial animals have that allowed them to surivive on land? would one being able to breathe?

 

[Will]

D)
And yes lungs, walking limbs (obviously), and adaptations to find food.

 

[Lauren]

first one ....B