Answer: implantation.
- A implantation
- B ovulation
- C fertilisation
- D gastrulation
Correct answer: A. implantation
Explanation: Implantation is the embedding of the blastocyst in the uterine lining.
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.