It is most common type of zoophily where the pollination is carried out through the agency of insects like- moths , butterflies , wasps , bees ,etc .
The flower are called as entomophilous flowers they show following characteristics -
Flower are generally large if small they become conspicuous by their grouping .
They are showy or brightly coloured .
Where petals are not conspicuous other parts becomes show
Example- Bract- Bougainvillea
Leaves- Euphorbia palcherrima
Sepal - Mussuenda
Stamen - Mimosa
Flowers contain nectar glands and pleasant fragnonce to attract insects.
These is no wastage of pollen grains so less number of pollen grains are produced .
The pollen grains are spiny , heavy and surrounded by a yellow oily sticky substance called pollen kit .
The stamens are inserted .
Stigmas are often inserted , sticky ,unbranched etc .
Example - Minoso- touch me not
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