Tag: pregnancy and birth

Questions Related to pregnancy and birth

At the time of birth, a baby girl has thousands of immature eggs.

zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. True

  2. False

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Correct Option: A
Explanation:

  • Unlike spermatogenesis, oogenesis starts in embryonic life with the formation of oogania ( gamete mother cells ).
  • Oogania starts dividing and enter into a prophase-I stage of the meiosis. They get arrested at this stage and they are called as primary oocytes now. 
  • These oocytes are basically immature eggs and they are present in thousands within each ovary of a baby.
So, the correct option is 'True'.

Mother's milk is preferred to cow's milk because it contains

zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. More fats and more lipids

  2. Less lopids and more fats

  3. More lipids and less fats

  4. Less fats and less lipids

Show answer
Correct Option: D
Explanation:

Whole cow's milk also contains too much protein, sodium, potassium, phosphorus and chloride which may put a strain on an infant's immature kidneys. In addition, the proteins, fats and calcium in whole cow's milk are more difficult for an infant to digest and absorb than the ones in breast milk. So, the correct option is "D" (Less fats and less lipids).

Column I contains terms and Column II contains definitions. Match them correctly and choose the right answer.

Column I Column II
A Parturition 1. Attachment of zygote to endometrium
B. Gestation 2. Release of egg from Graafian follicle
C. Ovulation 3. Delivery of baby from uterus
D. Implantation 4. Duration between pregnancy and birth
E. Conception 5. Formation of zygote by fusion of the egg and sperm
6. Stoppage of ovulation and menstruation
zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. A - 2, B - 4, C - 1, D - 5, E - 3

  2. A - 4, B - 3, C - 1, D - 5, E - 2

  3. A - 5, B - 1, C - 2, D - 3, E - 4

  4. A - 3, B - 4, C - 2, D - 1, E - 5

Show answer
Correct Option: D
Explanation:

The duration of pregnancy from conception till birth is known as gestation. It occurs for a duration of 40 weeks. The release of eggs from the ovaries (or the mature graafian follicle) is known as ovulation. Implantation is the process in which the embryo in the blastocyst stage is implanted in the uterus. When the egg fuss with the sperm resulting in the formation of zygote it is known as conception. Parturition is the act of childbirth in which the baby is delivered from the uterus. So, the correct option is 'A - 3, B - 4, C - 2, D - 1, E - 5'.

The function of oxytocin is to help in

zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. child birth

  2. growth

  3. lactation

  4. gametogenesis

Show answer
Correct Option: A
Explanation:

Oxytocin i a hormone released by the posterior pituitary that helps the muscles of the uterus to contract during parturition (child birth). It also stimulates the release of prostaglandins that help cause further contraction. So, the correct option is 'child birth'.

Estrogen progesterone ratio increases during end of the 3rd trimester. This is responsible for increasing

zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. Lactation

  2. Uterine contractions

  3. Oxytocin secretion

  4. Dilation of uterus

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Correct Option: A
Explanation:

  • The increased levels of oxytocin at the time of parturition are responsible for vigorous uterine contractions and the dilation of the uterus. 
  • The estrogen-progesterone ratio increases during the end of the 3rd trimester which results in the increased ability of the mammary glands for lactation.

So, the correct answer is 'lactation'.

Increase in concentration of which hormone determines the time of child birth?

zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. hCG

  2. hPL

  3. Oxytocin

  4. Progesterone

Show answer
Correct Option: C

The mother gives birth to the child when the development of the _____ is complete.

zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. Utrus

  2. Zygote

  3. Foetus

  4. None of these

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Correct Option: C

The act of expelling the full term foetus from the uterus is termed as

zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. Gestation

  2. Implantation

  3. Parturition

  4. Capacitation

Show answer
Correct Option: C
Explanation:

The process of delivery of foetus is called as parturition. Parturition is the act of expelling the full-term foetus from the mother's uterus at the end of gestation. In this process fully developed foetus produces foetal ejection reflex which stimulates pituitary to release oxytocin hormone. This hormone causes vigorous uterine contraction that leads to the delivery of feotus. This process is also known as the delivery of the foetus when the pregnancy period gets over. The importance of parturition is that the event results in the foetus to come out of the womb. The process is accompanied with the onset of lactation.

Thus, the correct answer is option C. 

Gestation period of Salamandra atra is 

zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. 200 days

  2. 540 days

  3. 36 months

  4. 440 days

Show answer
Correct Option: C
Explanation:

Salmonella atra is an amphibian having one of the longest gestation periods among animals existing on this earth. They have a gestation period between 36-48 weeks.

They are unique in the sense that it has an ovo-viviparous method of reproduction by which it gives birth on land to fully metamorphosed offspring causing such a long gestation period.
So, the correct option is '36 months'.

Which grouping has gestation period in decreasing order?

zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

  1. Cow, Horse, Goat, Monkey and Swine/ Pig

  2. Horse, Cow, Goat, Monkey and Swine

  3. Money, Cow, Horse, Goat and Swine

  4. Monkey, Horse, Goat, Cow and Swine

Show answer
Correct Option: B
Explanation:

The horse has a gestation period of around 342 days whereas it is around 289 days for the cow.

Goat has a gestation period of 165 days and for Monkey, it is 155 to 160 days. Pig has the least gestation period of around 116 days.
So, the correct option is  'Horse, Cow, Goat, Monkey, and Swine'