[Solved] Horsetails are a type of seedless vascular plant. Gymnosperms: A collection of plants capable of producing seeds, encompassing conifers, cycads, Ginkgo, and gnetophytes, distinguished by their exposed or "naked" seeds. Water Potential: A measure of the potential energy in water, influencing the direction in which water will move, often used in the study of plant physiology. Vertically: In a direction or way that aligns or relates to the top and bottom or head and foot, typically in reference to genetics, to indicate transmission of traits from parent to offspring. Water: A transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of most living organisms.