Biology
Most insect-pollinated flowers produce nectar and are sweet-smelling. Why?
Answer
Most insect-pollinated flowers produce nectar and are sweet-smelling to attract insects. Insects such as bees and butterflies visit different flowers for their food (nectar) and in this process pollen grains get stuck to their body. When they visit another flower, the pollen grains get transferred to the stigma of flowers. Thus, to facilitate pollination by insects (entomophily), most flowers produce nectar and are sweet-smelling.
Related Questions
The diagram illustrates the structure of a flower.

- Identify the parts labelled a to e.
- Which part produces pollen grains?
- Which part receives pollen grains for pollination?
Draw a labelled diagram to show the process of fertilization in plants.
To produce a new variety of crop plant with desired characteristics, artificial pollination is required. Why?
Why are pollen grains produced in large quantities in wind-pollinated flowers?