Fertilization of gametes produces a diploid zygote.
Sexual reproduction requires formation of gametes, followed by fertilization.
Sexual reproduction produces a diploid zygote.
What produces a diploid zygote?

[1] salamanders
[2] Plant reproduction
[3] peachleaf willow
[4] permineralization
[5] sexual reproduction
[6] Veins and arteries.
[7] Chlorophyll
[8] Most plants