Rose plants produce large,attractive bisexual flowers but they seldom produce fruits. On the other hand,a tomato plant produces plenty of fruits though it has small flowers. Analyse the reasons for the failure of fruit formation in roses.

(N/A) The failure of fruit formation in roses can be attributed to several biological factors:
$(a)$ Rose plants may not produce viable pollen grains.
$(b)$ Rose plants may lack functional egg cells.
$(c)$ Rose plants may possess abortive ovules.
$(d)$ As many cultivated roses are hybrids,the meiotic process may be abnormal,leading to the production of non-viable gametes.
$(e)$ Self-incompatibility,where the plant rejects its own pollen.
$(f)$ Presence of internal physiological or chemical barriers that inhibit pollen tube growth or prevent successful fertilization.