How Well Do You Know Embryonic/Fetal Development?

Explanation
The correct answer is 5 weeks because the question is asking about the age of the embryo, and out of the given options, 5 weeks is the only one that matches. The other options (13 weeks, 8 weeks, and 3 weeks) are not correct because they do not correspond to the age of the embryo mentioned in the question.

Explanation
The correct answer is 8 weeks. This is likely determined based on the stage of development of the embryo. At 8 weeks, significant growth and development have occurred, with the embryo having formed most of its major organs and structures. This is an important milestone in fetal development, with the embryo transitioning into the fetal stage.

Explanation
The correct answer is 21 days. This is the age of the embryo.

Explanation
The correct answer is 13 weeks because at this stage, the embryo/fetus has completed the first trimester of development. At 13 weeks, the major organs and systems have formed, and the fetus is about the size of a lemon. This is an important milestone in pregnancy as the risk of miscarriage significantly decreases, and the fetus begins to move and respond to stimuli.

Explanation
The correct answer is 8 weeks. This is because at 8 weeks, the embryo/fetus is in the early stages of development. It has a distinct shape and recognizable features such as limbs, fingers, and toes. The organs are also forming, and the heart is beating. This stage is crucial for the growth and development of the baby.

Explanation
Based on the given options, the correct answer is 7 weeks. This indicates the age of the embryo/fetus being referred to in the question.

Explanation
The correct answer is 20 weeks because at this stage of pregnancy, the fetus has developed enough for its age to be determined accurately. The development of the fetus at 20 weeks includes the formation of distinct facial features, the ability to hear sounds, and the development of organs such as the heart, lungs, and kidneys. Additionally, the fetus would have reached a length of about 6.5 inches and would be more active, with the mother being able to feel its movements.

Explanation
The correct answer is 14 weeks because at this stage, the embryo/fetus has developed certain characteristics and features that are consistent with a 14-week gestational age. These may include the formation of organs, limbs, and facial features, as well as the presence of distinct gender markers. Additionally, medical professionals can use ultrasound imaging and measurements to determine the age of the embryo/fetus, and these indicators align with the 14-week mark.

Explanation
The correct answer is 16 weeks. This is likely determined by the size and development of the embryo/fetus. At 16 weeks, the embryo/fetus would have developed certain physical characteristics and reached a specific size that can be used to estimate their age.

Explanation
Based on the given information, the correct answer is 21 weeks. This is determined by the level of development of the embryo/fetus in the photo, specifically its ability to grab onto the surgeon's finger. At 21 weeks, the fetus is typically able to grasp objects, indicating a certain level of motor development.