When to neuter. A male dog can be neutered any time after eight weeks of age. A few years ago, most veterinarians advised waiting until puberty hit at about six months, and some still make that recommendation. Talk to your veterinarian about whatâs best for your dog.
The phylum Cycadophyta contains about 140 living species of plants called cycads, with more species present in the fossil record. Cycads have seeds and water-conducting vessels. Cycads belong to a larger group of plants called gymnosperms, which bear seeds in cone-like structures.
Female plants of the African cycad Encephalartos manikensis produce a huge, erect seed cone. The overlapping scales bear large, bright red seeds which sink in water. Cycads date back in the fossil record to a time when dinosaurs roamed the land and when the earth's continents were united. It is believed that continental drift has resulted in the present worldwide distribution of this ancient group of seed plants. The large, heavy seeds of Encephalartos manikensis sink in water.