Science true or false (a). Asexual reproduction involves the fusion of two types of sex cell. ___________ (b). Asparagus reproduces by its roots._______ (c). Begonia reproduces by its leaves._______ (d). Spirogyra reproduces by budding._________ (e). Vegetative propagation has no disadvantages._________ (f). Begetatives propagation is the fastest method of increasing the number of plants._________