Question

Do you think all flowers produces nectar give reason to support your answer

Answer 1

Flower produce nectar because nectar helps to attract insects which pollinates the pollen grains. Some flowers pollinate with the help of wind. So
they do not need to attract insects hence they don't produce nectar.

Answer 2

nutrition in the form of nectar, waxes or the pollen itself, ... Other produce compounds that are similar to the pheromones that insects use to attract each other. ... "The neighborhood flower shop can give you a bouquet of huge, vibrant flowers that will brighten a room for ... Dudareva is working on the answer to that question