Let’s go step by step to put the fertilisation process in the correct order.
We start from the very beginning — when sperm are looking for the egg.
1.
Sperm are searching and racing to get to the egg.
→ This is the first step. Sperm must reach the egg before anything else can happen.
2.
The egg cell gets fertilized by a spermatozoa.
→ One sperm successfully enters the egg. Now it’s called a zygote.
3.
The fertilized egg (zygote) divides into multiple cells, while travelling down the fallopian tube.
→ The zygote starts splitting into more cells as it moves toward the uterus.
4.
The zygote becomes an embryo and implants in the uterus.
→ After dividing, it attaches to the wall of the uterus. Now it’s called an embryo.
5.
Embryo’s nose, mouth, ears, intestines and brain start to form. still has a tail.
→ Early development of body parts begins. It still looks a bit like a little creature with a tail.
6.
The embryo’s fingers will soon begin to open and close, toes will curl, and his mouth will make sucking movements.
→ More detailed features develop — hands, feet, and reflexes start forming.
7.
All organs are formed and the completed embryo becomes a fetus.
→ At this point, all major organs exist. We now call it a fetus.
8.
The fetus now sleeps and wakes on a regular schedule, and her brain is very active. She also kicks.
→ The baby is growing bigger, moving, and developing brain activity.
9.
The baby’s physical development is complete and is ready to exit the womb.
→ Fully grown, ready to be born.
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Final Answer:
Top row (left to right): 9, 3, 8
Middle row (left to right): 7, 2, 5
Bottom row (left to right): 4, 6, 1
Parent Tip: Review the logic above to help your child master the concept of stages of prenatal development worksheet.
