20. Define population Density Explain any four factors that affect populationdensity of any area1+4-52. Describe the process of spermatogenesis with diagrammaticrepresentation

20. Define population Density Explain any four factors that affect pop

1.	20. Define population Density Explain any four factors that affect populationdensity of any area1+4-52. Describe the process of spermatogenesis with diagrammaticrepresentation
Answer» Spermatogenesis is the process of the production of sperms from the immature germ cells in males. It takes place in seminiferous tubules present inside the testes. During spermatogenesis, a diploid spermatogonium (male germ cell) increases its size to form a diploid primary spermatocyte. This diploid primary spermatocyte undergoes first meiotic division (meiosis I), which is a reductional division to form two equal haploid secondary spermatocytes. Each secondary spermatocyte then undergoes second meiotic division (meiosis II) to form two equal haploid spermatids. Hence, a diploid spermatogonium produces four haploid spermatids. These spermatids are transformed into spermatozoa (sperm) by the process called spermiogenesis.