To understand the male reproductive system, one must know the external and internal structures, and the process of spermatogenesis (sperm production) including the physiologic pathway of the sperm cell.tructures. The male external structures are the penis and the scrotum (a pouch which protects the testes). The penis consists of the glans (the head), and the shaft (the body). The glans is covered by a fold of skin called the foreskin (circumcision removes the foreskin).
Cold Stratification - How to Stratify Seeds Stratification Method. Custom Search. The Cold Moist stratification is the process by which we imitate the period of cold and moisture in nature required for perennials seeds germination (break dormancy). These perennials or native perennials seeds are much more difficult to germinate.
DEFINITION of 'Stratified Random Sampling'. A method of sampling that involves the division of a population into smaller groups known as strata. In stratified random sampling, the strata are formed based on members' shared attributes or characteristics. A random sample from each stratum is taken in a number proportional to the stratum's size when compared to the population. These subsets of the strata are then pooled to form a random sample. Next Up.