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Biology 12 Chapter 21
Development and Aging - 17
1.
Which is correct regarding fraternal twins?
a) Same sex
b) Same hair colour
c) May look alike
d) Same blood group
2.
Birth of baby is called…………?
a) Lactation
b) Parturition
c) Malnutrition
d) Nursing
3.
Which hormone is decreased during parturition?
a) Estrogen
b) Maternal hormones
c) Foetal hormones
d) Progesterone
4.
Which hormone is increased during parturition?
a) All of them
b) Foetal hormones
c) Estrogen
d) Maternal hormones
5.
From which month onward secretion of estrogen is increased?
a) 8th
b) 6th
c) 7th
d) 9th
6.
Which cells are stimulated by estrogen resulting in parturition?
a) Endometrial
b) Myometrial
c) Perimetrial
d) Foetal
7.
Estrogen stimulate myometrial cells to form receptors for…………..?
a) Prostaglandins
b) Prolactin
c) Progesterone
d) Oxytocin
8.
Which hormones are secreted by foetal pituitary gland?
a) Oxytocin and ACTH
b) Prostaglandins and ACTH
c) Progesterone and oxytocin
d) Corticosteroids and ACTH
9.
What is the role of oxytocin released by foetus?
a) Excite adrenal gland to release ACTH
b) Excite uterus
c) All of them
d) Excite placenta to release progesterone
10.
Which foetal hormone influence placenta to decrease progesterone?
a) Prostaglandins
b) Estrogen
c) Corticosteroids
d) Oxytocin
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