A flower pollinated by humming bird has the following features : flower is usually red in colour, without scent, tube shaped, no landing platform. List out the corresponding features in the humming birds to justify that plant pollinator mechanism is a mutualistic one.

Dear student, 
Please find below the solution to the asked query:

A Humming bird and the floral characteristics is a mutualistic mechanism as:
1. Humming birds have excellent color and favours red colour. Hence, flowers pollinated by these birds are red in colour.
2. Humming birds feed on wing. Hence, flowers pollinated by these birds are downwardly-facing with no landing platform.
3. These birds have sharp and long beaks. Hence, flowers pollinated by it are tubular.


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