Parturition And Lactation Test

Parturition And Lactation

This is online test 02 for CBSE class 12 Biology Human Reproduction (Parturition and lactation).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Pseudo dormancy differs from normal pregnancy in
  • A
    Absence of corpus leuteum
  • B
    Absence of foetus
    Correct
  • C
    Developmental change in endometrium
  • D
    Development of ovum
2
The gaseous hormone that help in switching over its respiratory and circulatory system just after delivery is
  • A
    Nitric oxide (NO)
    Correct
  • B
    Deoxygenate
  • C
    Sulpher dioxide
  • D
    Carbon monoxide (CO)
3
Parturition is induced by complex
  • A
    Mechanical actions
  • B
    Reflex action
  • C
    Biochemical mechanisms
  • D
    Neuroendocrine mechanisms
    Correct
4
The mammary glands of female starts producing milk
  • A
    Start of pregnancy
  • B
    At the time of puberty
  • C
    At the end of menopause
  • D
    At the end of pregnancy
    Correct
5
Monozygotic twins are produced when
  • A
    First cleavage of zygote is followed by separation into two
    Correct
  • B
    There is no cleavage
  • C
    Incomplete cleavage of zygote
  • D
    Two ova are fertilized simultaneously
6
Human embryo is about an inch in length after
  • A
    Six weeks
  • B
    Four weeks
  • C
    Eight weeks
    Correct
  • D
    Two weeks
7
Progesterone is called pregnancy hormone as it helps in
  • A
    All of the above
  • B
    Maintaining pregnancy and bring about labour pain
    Correct
  • C
    Help in causing contraction of uterus for delivery
  • D
    Release of ovum from ovary
8
Statement I: Milk synthesis is under control of prolactin. Statement II: release of milk is controlled by oxytocin of pituitary glands.
  • A
    Both statement s are correct
    Correct
  • B
    Statement I is correct but statement II is incorrect
  • C
    Statement II is correct but statement I is correct
  • D
    Both statements are incorrect
9
Assertion: The first milk after the birth of baby is called colostrum. Reason: Colostrum is rich in proteins, calories and antibiotics.
  • A
    Both assertion and reason are incorrect
  • B
    Assertion is correct but reason is incorrect
  • C
    Assertion is incorrect but reason is correct
  • D
    Assertion and reason both are correct
    Correct
10
Assertion: Breast-feeding during the initial period of lactation is recommended by doctors for bringing up healthy baby. Reason: initial period of lactation contain colostrum that contain several antibodies.
  • A
    Reason does not explain the assertion
  • B
    Assertion is correct but reason is incorrect
  • C
    Both assertion and reason are correct
    Correct
  • D
    Both assertion and reason are incorrect