What are the differences between the pubertal growth of girls and boys? select all that apply?

There are choices for this question namely:

1. Girls tend to begin their physical changes two years prior to boys.

2. Girls grow till the age of 17 years whereas boys grow till 20 years of age.

3. Girls gain weight at an increased rate whereas boys gain height at an increased rate.

4. Girls show alteration in the width of hips whereas boys show alteration in shoulder width

The correct answer are that girls tend to begin their physical changes two years prior to boys as puberty in girls start much earlier than boys. This is evident as seeing girls in middle school being taller than boys. Girls also grow until the age of 17 years as their growth plates easily fuse because of the abundant amount of sex hormones and boys grow until 20 years of age. Weight, hip width and shoulder width are not pubertal factors.

Unfortunately this question is incomplete. However, the differences between boy and girls include:

1. Girls start pubertal growth about 1 year earlier than boys.

2. Within boys, the first sign is testicular enlargement, whereas in girls, breast enlargement occurs.