Plants are generally autotrophic . Can you think of certain plants that are partially heterotrophic ?

Plants are autotrophic. Can you think of some plants that are partially heterotrophic?

Plant part having two generations, one within the other is

Farmers cultivate pea plant as an intermediate crop in the paddy fields. After harvesting they remove all parts of the pea plant from their crop land Do you think the action of removing all parts of the pea plant from the field as a good agriculture practice.

Cellular totipotency : It is the capacity of plants to generate into whole plants from cell/explant. Name the plant propagation method using this principle.