NEET-UG Biology · Class 12
Parturition and lactation — NEET & JEE Questions
Parturition and lactation is a topic in Human Reproduction, a Class 12 Biology chapter of the NEET-UG syllabus. TestBudy holds 12 published NEET-UG questions on Parturition and lactation, each with the marking scheme of the real paper.
- questions
- 12
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- 10
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Parturition and lactation MCQs with solutions
10 of the 12 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
Which hormone is strongly associated with uterine contractions during parturition?
- A. Glucagon
- B. Insulin
- C. Thyroxine
- D. Oxytocin
What type of feedback operates when uterine contractions stimulate oxytocin release and oxytocin strengthens further contractions?
- A. Positive feedback
- B. Negative feedback
- C. No feedback
- D. Counter-current exchange
Which pituitary hormone primarily stimulates milk production after childbirth?
- A. Oxytocin
- B. Prolactin
- C. FSH
- D. ACTH
Parturition refers to
- A. childbirth at the end of pregnancy
- B. fertilisation of the ovum
- C. implantation of the embryo
- D. formation of sperm
An infant suckles normally, milk is being produced, but milk ejection is poor because a hormonal reflex is impaired. Which hormone is most directly deficient?
- A. Testosterone
- B. Prolactin
- C. Oxytocin
- D. TSH
Why is colostrum especially valuable to a newborn?
- A. It prevents all future infections
- B. It contains no proteins
- C. It permanently replaces the infant immune system
- D. It contains maternal antibodies that provide passive immune protection
Near term, stretching of the cervix promotes oxytocin release, which strengthens uterine contractions and causes further cervical stretching. This is an example of
- A. positive feedback
- B. negative feedback
- C. competitive inhibition
- D. genetic drift
Which hormone is most directly associated with milk ejection from the mammary glands?
- A. Oxytocin
- B. Prolactin
- C. FSH
- D. ACTH
During labour, stretching of the cervix increases neural signals that promote oxytocin release. What is the effect of this arrangement?
- A. It reinforces uterine contractions until delivery
- B. It progressively suppresses uterine contractions
- C. It stops cervical stretching immediately
- D. It inhibits all pituitary secretion
Which hormone is most directly involved in stimulating milk production after childbirth?
- A. Prolactin
- B. Oxytocin only
- C. Thyroxine
- D. Aldosterone
Common mistakes in Parturition and lactation
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Treating lactation as a single hormonal process controlled only by prolactin.
- Assumes colostrum is nutritionally or immunologically unimportant.
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