Answer: fertilisation.
- A gamete formation
- B fertilisation
- C cell elongation
- D cytokinesis
Correct answer: B. fertilisation
Explanation: Gametes are haploid; their fusion at fertilisation brings back the full diploid chromosome number.
Structure of a mature flower. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Asexual and sexual reproduction, flower anatomy, pollination, fertilization, and seed development.