Fact 1: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote.

Fact 2: Male gametes are called sperm.

Given the two facts above, answer the question "What is formed when a male gamete and an egg fuse together?" with the following options: 
- Plant reproduction
 - simple zygote
 - spread flower seeds
 - diploid zygote
 - Chemical energy
 - peachleaf willow
 - duplex zygote
 - reproductive zygote


 

    diploid zygote     