Question

a plant has lost its capacity for sexual reproduction how can it how can this plant continue its progeny explain with the help of an example

Answer 1

It could still reproduce by the processes of either tissue culture or vegetative propagation :)

Answer 2

If a plant has lost its capacity to sexually reproduction, there are some asexual ways through which a plant can maintain its growth and number.

Tissue cloning is one of them. It is a process of growing tissues to organs under septic conditions, similarly via vegetative propagation and grafting, plant can produce.