Answer: Motile spermatozoa.
- A Primary spermatocytes
- B Motile spermatozoa
- C Spermatogonia
- D Secondary spermatocytes
Correct answer: B. Motile spermatozoa
Explanation: Spermiogenesis is the differentiation of non-motile spermatids into mature, motile spermatozoa; their release is called spermiation.
The human male reproductive system: sperm formed in the testis mature in the epididymis and travel via the vas deferens, mixing with secretions of the seminal vesicle, prostate and bulbourethral glands. Image: Wumingbai, CC BY-SA 4.0, via Wikimedia Commons.
Concept context
Male and female reproductive systems, gametogenesis, fertilization, implantation, pregnancy, and reproductive health.