AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
If the vas deferens is blocked, sperms cannot be transferred to the female reproductive tract, so they cannot reach the egg and fertilisation will not occur.
Source: Chapter 7, Section 7.3.3(d)
The examiner wants you to directly link the function of the vas deferens (sperm transport) to the consequence of its blockage (no fertilisation). One clear causal sentence is enough for 1 mark. The textbook explicitly states: "If the vas deferens in the male is blocked, sperm transfer will be prevented… fertilisation will not take place."