Why a penguin can not be survive in a tropical rainforest?

Answer 1:

Think of the question a little more carefully, can they - not do they.

Fiordland Penguins are eligible to live in rainforests but live on the south-west coast of New Zealand.

In other Words - penguins CAN live in the rainforests but do not.

(They probably would if they could get there.)

Answer 2:

Unlikely.

Penguins require proximity to the ocean for their food. Rainforests - even cool, temperate rainforests which are the rainforests generally found in the same latitudes as some species of penguins - are nit found close enough to the ocean for penguins.