Sperm can survive 15-30 minutes on skin or surfaces. Temperature and moisture affect sperm survival rate. Sperm becomes dead once semen dries. Chances of pregnancy are extremely low
Sperm is male reproductive cell produced by most animals. Most sperm are flagellated, except nematodes and certain mollusks. Sperm production occurs in testes of higher vertebrates
Semen is a whitish fluid containing seminal fluid and sperm. Average ejaculation volume is 1.25 to 5 milliliters. Semen liquefies within 20-30 minutes after ejaculation. Pre-ejaculatory fluid (precum) is colorless and mucus-like
Sperm are reproductive cells produced by testicles containing 23 chromosomes. Each sperm has head, neck, and tail for egg penetration. Spermatogenesis takes 74 days, producing 100-200 million daily. Males can produce up to 1 trillion sperm cells throughout life
Semen is a whitish fluid that carries sperm during ejaculation. Sperm are microscopic cells that are part of semen. Average semen volume is 1.5-5 ml containing 20-150 million sperm. Sperm are about 0.05 mm long and constantly divide in testicles