Final answer:
Photosynthesis in whisk ferns occurs in the green stems, as they lack traditional leaves and roots.This is an adaptation that allows whisk ferns to thrive in their specific environments.option d is correct.
Step-by-step explanation:
In whisk ferns, photosynthesis takes place primarily in the stems. Unlike many other plants, whisk ferns lack traditional leaves and roots, a condition likely resulting from evolutionary reduction. The green stems of whisk ferns, which branch dichotomously, are where photosynthesis occurs.
This is an adaptation that allows whisk ferns to thrive in their specific environments. They carry out the process of photosynthesis in their stems since they do not have the typical leaves seen in other plant species.Photosynthesis in whisk ferns occurs in the green stems, as they lack traditional leaves and roots.