Question

19 ____ weeks is considered a full - term pregnancy.
a. 37
b. 38
c. 39
d. 34
20 using the word bank, label the stages of human development.
images of three stages of human development
word bank: embryo, fetus, zygote

Explanation:

Question 19

A full - term pregnancy is typically considered to be 37 weeks or more (with 39 - 40 weeks being the optimal full - term range, but 37 weeks is the lower limit of full - term). Among the options, 37 weeks is the correct value for the start of a full - term pregnancy.

1. The first image (the smallest, single - celled - like structure) corresponds to the zygote. A zygote is the fertilized egg, the first stage of human development.
2. The second image (the middle - sized, early developmental stage with basic structures) corresponds to the embryo. The embryo stage follows the zygote and is characterized by the development of major organ systems.
3. The third image (the largest, more developed with recognizable fetal features) corresponds to the fetus. The fetus stage is when the organism has more defined human - like features and continues to grow and mature.

So from left to right, the labels should be zygote, embryo, fetus.

Answer:

A. 37

Question 20