Fetal Development Quiz Questions And Answers
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How much do you know about the fetal development process? Test your knowledge with this fetal development quiz having well-researched questions and answers. Fetal development is an amazingly complex and beautiful process that can be described as the procession of events that starts when sperm and egg meet and unfolds in an orderly progression to form a baby. Let's see what more you know about this topic. So, take the quiz and start answering!
Questions and Answers
- 1.
Sperm go into an egg and fertilizes it. Chromosomes with 30,000 genes combine and determine physical characteristics of what will soon be the baby?
- A.
2 cell stage
- B.
Fertilization
- C.
Day 21
- D.
Morula
Correct Answer
B. FertilizationExplanation
Fertilization is the process in which a sperm cell enters an egg cell and combines their genetic material, including the chromosomes with approximately 30,000 genes. This combination of genetic material will determine the physical characteristics of the developing baby. Therefore, fertilization is the correct answer that best fits the given information.Rate this question:
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- 2.
The first division after fertilization happens at what stage?
- A.
4 cell stage
- B.
Ovulation
- C.
2 cell stage
- D.
3 cell stage
Correct Answer
C. 2 cell stageExplanation
After fertilization, the zygote undergoes its first division at the 2 cell stage. This means that the zygote divides into two cells, which are the first cells of the developing embryo. This division is crucial for the subsequent development of the embryo and is an important milestone in early embryogenesis.Rate this question:
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- 3.
When 50% of pregnancies fail-only a 50% chance of the baby surviving at the point of __________.
- A.
Implantation
- B.
Gastrulation
- C.
Day 23
- D.
Day 21
Correct Answer
C. Day 23Explanation
Day 23 is the point at which the baby has implanted in the uterus and has started to develop. At this stage, there is a 50% chance of the baby surviving because it has successfully implanted and is progressing in its development. The other options, such as gastrulation or day 21, do not specifically indicate the point at which the baby has implanted and therefore do not align with the given information.Rate this question:
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- 4.
When the cells in the morula change positions and create a fluid-filled cavity it is called _____________.
- A.
Morula
- B.
Blastocyst
- C.
Gastrulation
- D.
Ovulation
Correct Answer
B. BlastocystExplanation
When the cells in the morula change positions and create a fluid-filled cavity, it is called a blastocyst. This is an important stage in embryonic development, where the inner cell mass forms the embryo and the outer cell mass forms the placenta. The blastocyst is responsible for implanting into the uterine wall and initiating pregnancy.Rate this question:
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- 5.
At what stage does the human baby heart start beating?
- A.
Day 21
- B.
Day 23
- C.
Week 5
- D.
Week 21
Correct Answer
A. Day 21Explanation
The human baby's heart starts beating on day 21. This is the stage when the heart begins to form and starts its rhythmic contractions. This early development of the heart is crucial for the baby's growth and survival.Rate this question:
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- 6.
Both of the 2 cells divide creating four cells and eventually growing into the morula at stage _________.
- A.
4 cell stage
- B.
Implantation
- C.
Fertilization
- D.
2 cell stage
Correct Answer
A. 4 cell stageExplanation
At the 4 cell stage, both of the 2 cells divide, resulting in the formation of four cells. This stage is an early stage of embryonic development, known as the morula stage. The morula is a solid ball of cells that will continue to divide and develop into a blastocyst, which later implants into the uterine wall. Therefore, the correct answer is the 4 cell stage.Rate this question:
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- 7.
When the blastocyst is implanted into the wall of the uterus and starts developing and sends out hormones into the bloodstream, this stage is referred as ___________.
- A.
Blastocyst
- B.
Morula
- C.
Implantation
- D.
Fertilization
Correct Answer
C. ImplantationExplanation
Implantation is the correct answer because it refers to the stage when the blastocyst, a hollow ball of cells, attaches itself to the uterine wall and begins to develop. During this process, the blastocyst releases hormones into the bloodstream, which is a key characteristic of implantation. Fertilization is the process of the sperm and egg joining, while the morula is an earlier stage of embryonic development before the blastocyst forms.Rate this question:
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- 8.
The morphology of the embryo forms 3 different layers: the ectoderm, mesoderm, and _____________.
- A.
Emoderm
- B.
Morulation
- C.
Endoderm
- D.
Nesoderm
- E.
Nesoderm
Correct Answer
C. EndodermExplanation
The morphology of the embryo forms 3 different layers: the ectoderm, mesoderm, and endoderm. The ectoderm gives rise to the nervous system, skin, and hair. The mesoderm forms the muscles, bones, and circulatory system. The endoderm develops into the lining of the digestive tract, respiratory system, and various internal organs such as the liver and pancreas. These three layers are essential for the proper development and differentiation of the embryo into a fully formed organism.Rate this question:
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- 9.
What is the placenta?
- A.
The organ that provides vitamins
- B.
The organ that provides nutrients and gets rid of waste
- C.
The stage in the early embryonic development
- D.
None of the above
Correct Answer
B. The organ that provides nutrients and gets rid of wasteExplanation
The placenta is an organ that develops during pregnancy and is attached to the uterine wall. Its main function is to provide nutrients and oxygen to the developing fetus, as well as remove waste products such as carbon dioxide. It acts as a barrier between the mother's blood supply and the baby's, allowing for the exchange of substances while keeping them separate. Therefore, the correct answer is "the organ that provides nutrients and gets rid of waste."Rate this question:
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- 10.
In which week does the baby start developing its ears and toes?
- A.
Week 5
- B.
Week 6
- C.
Week 7
- D.
Week 8
Correct Answer
C. Week 7Explanation
During week 7 of pregnancy, the baby starts developing its ears and toes. This is a crucial stage of fetal development, as the ears begin to form and the toes start to take shape. It is during this time that the baby's body is rapidly growing and developing, and the organs and limbs are starting to form. Therefore, week 7 is the correct answer as it marks the beginning of ear and toe development in the baby.Rate this question:
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- 11.
What does the pancreas do for the baby?
- A.
Cleansing blood
- B.
Producing insulin
- C.
Excreting waste
- D.
None of the above
Correct Answer
B. Producing insulinExplanation
The pancreas produces insulin, which is a hormone that helps regulate blood sugar levels. This is important for the baby's overall health and development. Insulin allows the body to use glucose from the bloodstream as a source of energy. Without insulin, blood sugar levels can become imbalanced, leading to potential health complications. Therefore, the pancreas plays a crucial role in producing insulin for the baby's well-being.Rate this question:
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- 12.
The first trimester spans from conception to _________.
- A.
12 weeks
- B.
17 weeks
- C.
14 weeks
- D.
2 weeks
Correct Answer
A. 12 weeksExplanation
The first trimester of pregnancy typically lasts for 12 weeks. During this time, the fertilized egg implants itself into the uterus and begins to develop into an embryo. By the end of the first trimester, the embryo has grown into a fetus, with all major organs and body systems formed. This is an important milestone in pregnancy as the risk of miscarriage significantly decreases after the first trimester.Rate this question:
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- 13.
The fingernails and toenails of the baby begin developing between ________.
- A.
Weeks 9 to 12
- B.
Week 11 to 16
- C.
Week 2 to 6
- D.
Week 13 to 18
Correct Answer
D. Week 13 to 18Explanation
Between weeks 13 to 18, the baby's fingernails and toenails begin developing. This is a crucial period in fetal development when various organs and body parts start to form. The development of the nails is part of the overall growth and maturation process during this stage of pregnancy.Rate this question:
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- 14.
The reproductive organs and genitalia of the baby get developed by week _________.
- A.
Week 17 to 20
- B.
1st trimester
- C.
Weeks 6 to 9
- D.
Weeks 13 to 16
Correct Answer
D. Weeks 13 to 16Explanation
During weeks 13 to 16 of pregnancy, the reproductive organs and genitalia of the baby start to develop. This is a crucial period in fetal development as the baby's sex organs begin to form and differentiate. By this stage, the baby's external genitalia can be identified through ultrasound. The development of these organs during this time is an important milestone in the baby's growth and development.Rate this question:
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- 15.
How much does a newborn baby weigh?
- A.
5 pounds
- B.
7 pounds
- C.
2 pounds
- D.
10 pounds
Correct Answer
B. 7 poundsExplanation
A newborn baby typically weighs around 7 pounds. This is considered to be a healthy weight range for a newborn. Babies can vary in weight, but 7 pounds is a common average.Rate this question:
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Current Version
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May 18, 2023Quiz Edited by
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May 04, 2010Quiz Created by
Ldur3408
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