Passage in Nature

Plate 3A Honeycomb	3B Flower Stems	3C Insect Catching Plant	3D Lotus Stem

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Nature has large numbers of passage paradigm in form of pipes and passages. In naturehoneycomb (plate 3A) structure has the passage for storing eggs and honey. There are plants and flowers that use the passage mechanism for the collection of food to supply food from the soil (plates 3B).Numbers of plants have the passage mechanism for catching insects (plate 3C). Lotus stem (plate 3D) shows excellent example of passage that helps to allow water flow.