Flowerless plants, naked seeds, needle like leaves and cones as reproductive structure are the characteristics of:

Gymnosperms are a group of seed-producing plants that include conifers, cycads, Ginkgo, and gnetophytes. The term "gymnosperm" literally means "naked seeds," referring to seeds that develop unprotected by an ovary or fruit. They produce cones for reproduction and frequently have adapted structures like needle-like leaves.