Which one of the following statements is not true?

1. Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
2. The flowers pollinated by flies and bats secrete foul odour to attract them
3. Honey is made by bees by digesting pollen collected from flowers
4. Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups

Honey is produced by worker bees using nectar (fructose) of flowering plants.