Sexual reproduction involves the union of two _______

Tuber is found in ________

Artificial method of growing plants in a test tube is ______.

Male and females gametes undergo a fusion called _____ 

Bacteria reproduce asexually by ________ 

Underground swollen stem with tiny scale leaves and buds called eyes is ______.

Asexual reproduction in ferns and mosses occurs with the help of _______ 

_________ is the production of new offsprings by parents.

Examples of plant propagated by roots

Grafting helps in the __________