Question

PLEASE HELP 100 POINTS

Which of the following trimesters are correctly matched with their corresponding events during fetal development?

Second trimester—major organs completely form; fetus begins to produce urine
Third trimester—major organs completely form; neurulation occurs
Second trimester—bone starts to replace cartilage; fetus begins to produce urine
Third trimester—bone starts to replace cartilage; neurulation occurs

Answer 1

Answer:

Third trimester—major organs completely form; neurulation occurs

and

Second trimester—bone starts to replace cartilage; fetus begins to produce urine

Answer 2

Answer:

The answer is "Second trimester--bones start to replace cartilage; fetus begins to produce urine"

Explanation:

Around week 13 is when the 2nd trimester starts, which is also when urine is produced and bones replace cartilage! I took human biology and learned this too! :)