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.
The Magnoliophyta phylum is the dominant group of plants on the planet, as it contains almost a quarter of a million species. These species belong to two classes: Magnoliopsida (dicots) and Liliopsida (monocots), although this is a division currently under debate.