Q. Saurabh classified living organisms in four groups (I, II, III and IV) each containing four members based on the habitats in which they are found. In doing so he unknowingly placed one wrong member in each group. Identify the odd one out and select the correct option regarding this.
I. Acacia, Camel, Toucan, Aloe
II. Penguin, Fur seal, Polar bear, Lion-tailed macaque
III. Sea horse, Octopus, Corals, Silverfish
IV. Vallisneria, Chimpanzee, Red-eyed frog, Fern