Biology

Pregnancy and Childbirth

996 Questions

This hub covers essential biology questions on pregnancy, fetal development, and childbirth. Topics include the placenta, maternal physiology, and the stages of labor. These concepts are frequently tested in general science sections of various competitive examinations.

Placenta and fetal nutritionStages of laborMaternal immune systemPregnancy complications

Pregnancy and Childbirth Questions

Multiple choice

The connecting link between mother' s blood and foetal blood is termed as

  1. uterus

  2. placenta

  3. fallopian tube

  4. blood
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The placenta is the temporary organ that forms during pregnancy and serves as the interface between maternal and fetal blood circulation. It facilitates nutrient, oxygen, and waste exchange while keeping the blood supplies separate. The uterus hosts the fetus, fallopian tubes transport eggs, and direct blood mixing between mother and fetus does not occur.

Multiple choice

Directions: Read the following information and answer the given question.

Mrs. Gupta was expecting from the last one month. Both Mrs. and Mr. Gupta went to a maternity hospital. They expressed their desire to know the sex of their unborn child to the concerned doctor. The doctor refused to comply to this request. They even tried to bribe the doctor, but he disagreed.

Why is it illegal to know the sex of an unborn child?

  1. Parents might arrange special ceremonies for the baby boy.

  2. Parents might go for female foeticide after knowing that it is a female baby.

  3. Parents might disclose the sex to relatives also and they can arrange a surprise party for the couple.

  4. The sex determination procedure is harmful.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sex determination before birth is illegal in India primarily to prevent female foeticide - the selective abortion of female fetuses due to cultural preference for male children. This practice has led to severely skewed sex ratios in some regions. The doctor's refusal aligns with the PCPNDT Act. Options A and C describe positive celebrations, not illegal acts. Option D is incorrect - the procedures themselves (ultrasound) are not inherently harmful when used properly.

Multiple choice

Directions: Choose the appropriate answer from the options given below:

Theperiod elapsing between the termination of labor and the return of the generative tract to its normal condition is known as

  1. ante-natal period

  2. puerperal period

  3. Neonatal Period

  4. intra uterine period

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The puerperal period (or puerperium) is the postpartum period beginning immediately after childbirth and lasting about 6 weeks. During this time, the reproductive organs return to their normal, non-pregnant state. This involves involution of the uterus, healing of tissues, and cessation of lochia (postpartum bleeding).

Multiple choice

Mrs. Bhatiya is12 weeks pregnant and is noted to have an elevated blood pressure and proteinuria on a routine pregnancy health check. Which of the following statements is true?

  1. Cardiac output falls during pregnancy.

  2. She has pre-eclampsia .

  3. An underlying glomerulonephritis could be present .

  4. Most pregnant patients have significant proteinuria .

  5. Blood pressure always rises during pregnancy .
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

If blood pressure is relatively high in early pregnancy, this is abnormal. There are a number of causes of this including an underlying glomerulonephritis or pre-existing essential hypertension.

Multiple choice

Amniocentesis can be used to determine whether or not a developing foetus will

  1. have daibetes

  2. have Down syndrome

  3. be obesed

  4. will be intelligent
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When amniocentesis is done after the 15th week of pregnancy, there is 99+% accuracy in detecting Down syndrome and most other problems related to gross chromosomal abnormalities, including neural tube defects such as spina bifida.

Multiple choice

AFP screening can wrongly give results indicating that an embryo has genetic defects if

  1. the date of conception of the women has been miscalculated

  2. the expecting mother is anemic

  3. the expecting mother has Rh negative blood

  4. the expecting mother has Rh positive blood

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Since the amount of AFP in a mother's blood varies with the stage of a pregnancy, a wrong date can mislead a doctor. Similarly, when it is unknown that there are twins, the resulting large amount of AFP will likely be misinterpreted as a problem.

Multiple choice

Mrs. XYZ is suffering from mother-fetus Rh blood type incompatibility problems. This is happening because the Rh factor of her and her fetus, respectively, are

  1. Rh positive & Rh positive

  2. Rh positive & Rh negative

  3. Rh negative & Rh positive

  4. Rh negative & Rh negative
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In order for the fetus to be Rh positive, the father must also be Rh positive. As a result, when the mother is Rh negative and the father is Rh positive (or his Rh type is unknown), doctors usually assume that there will be a serious medical problem.

Multiple choice

If the father of a developing embryo is Rh positive and the mother is Rh negative, what are the chances that there will be a mother-fetus incompatibility problem? (Assuming that the lady has already had a son and 2 daughters and that there has been no medical treatment to anticipate this problem)

  1. 100%

  2. At least 50%

  3. Less than 50%

  4. 0%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If the father is homozygous dominant (DD) the chances of the fetus being Rh positive and an incompatibility problem occurring will be 100%. If the father is heterozygous (Dd), the chances are 50%. There will be no problem if the fetus is Rh negative.

Multiple choice

A couple is planning to have their first child and request to speak with a genetic counselor. The woman explains that she had a sister who died in childhood with Down syndrome. There is no other family history of the condition. What is the most appropriate counseling for them?

  1. Down syndrome is generally infrequent, so there is no increased risk to this couple.

  2. If her sister's karyotype analysis cannot be done, the woman herself should have chromosomal analysis.

  3. The pregnancy of the woman will be screened in the second trimester using alphafetoprotein, bhCG, and unconjugated estriol, which will be sufficient to detect Down syndrome, if it has occurred.

  4. The couple should obtain prenatal diagnosis by chorionic villus sampling or amniocentesis.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Although it is most likely that the sister with Down syndrome had trisomy 21, and she had a translocation, and the woman herself could be a carrier. This could be resolved either by obtaining a report of the sister's karyotype or performing chromosomal analysis on the woman.