Question

Rose plants produce large, attractive bisexual flowers but they seldom
produce fruits. On the other hand a tomato plant produces plenty of
fruits though they have small flowers. Analyse the reasons for failure of
fruit formation in rose.
Both these plants - rose and tomato - both selected by human beings
for different characteristics, the rose for its flower and tomato for its fruit.
Roses, being vegetatively propagated do not need to produce seeds.

NCERT Class XII
Biology - Main Course Book

Chapter 1. Reproduction

Answer 1

Because of no syncronise in the pollen formation and no need of sexual reproduction there is no production of fruit formation