| Show insects and flowers some flowers are sweet smelling at night and scentless during the day when this is the case one can be sure that the insects which fertilize the flowers are nocturnal in habit flowers which are a re sweet smelling during the day are fertilized by insects which fly during I 1 the day some flowers close up during the day and open during the night others do the opposite insects and flowers are mutual friends but both of them have their enemies there are insects which prey upon flowers and there are flowers or plants which use their flowers to prey upon insects |
