Answer:
The correct answer will be option- vascular.
Step-by-step explanation:
The Coniferophyta or conifers are the groups of plants which belongs to the division of vascular plants-gymnosperms.
These conifers are found in the altitude and dominate the northern hemisphere forests especially the northern boreal forests.
These trees are named conifers due to a reproductive structure- cone which embeds the mega and micro gametophyte.
Thus, option- vascular is the correct answer.