Question

A researcher proposes that the obligate parasitic weed requires exposure to a signal from the host plant before it can germinate. Using the data as evidence, provide support for the researcher’s claim and give ONE reason the response would be an advantage for the weed plants.

Answer 1

the obligate parasite requires strigolactones for seed germination and not karrikins. The plant secrete strigolactone from its root into the soil as mentioned. In the soil, strigolactone promotes the seed germination of the parasitic weed.

The strigolactones can be beneficial for the germination and growth of the weed plant.