Based on an analysis of the data, describe the effect of karrikins on seed germination in the autotrophic host plants and the obligate parasitic weed plants.

It triggers seed germination by activating hormone.

Explanation:

Karrikins has a great effect on seed  germination in the plants as well as the obligate parasitic weed plants because it trigger the germination of seed by signaling of hormone known as strigolactone which is responsible for the germination of see. Karrikins are the group of plant growth regulators which is present in the smoke of burning plant.

answer; ///i believe the answer your looking for is (ribosomes);