Q. No.Morula is a solid ball of cells during early embryonic development and consists of:
(1) 4 – 8 cells
(2) 8 – 16 cells
(3) 24 – 30 cells
(4) 60 – 72 cells
Cleavage is:
(1) Dissolution of the zona pellucida
(2) A specialized mitotic division in late fetus
(3) A specialized meiotic division in late fetus
(4) A specialized mitotic division in zygote and early embryo
Which of the following groups of hormones produced in women only during pregnancy ?
1. hCG, hPL, relaxin
2. Estrogen, progesterone, hCG
3. Cortisol, prolactin, thyroxine
4. Prolactin. progesterone, hCG
Stem cells that are capable of giving rise to all the tissues and organs are present in:
1. Cumulus oophorus of the Graafian follicle
2. Lutein cells of the corpus luteum
3. Trophoblast cells of the developing embryo
4. Inner cell mass of developing embryo
In a human female, the blastocyst:
| 1. | gets implanted into uterus three days after ovulation |
| 2. | gets nutrition from uterine endometrial secretion only after implantation |
| 3. | gets implanted in endometrium by the trophoblast cells |
| 4. | forms placenta even before implantation |
Identify the human development stage shown below as well as the related right place of its occurrence in a normal pregnant woman, and select the right option for the two together:
| Developmental stage | Site of occurrence | |
| 1. | Blastula | End part of fallopian tube |
| 2. | Blastocyst | Uterine wall |
| 3. | 8-celled morula | Starting point of fallopian tube |
| 4. | Late morula | Middle part of fallopian tube |
The amount of which hormone increases in Pregnancy?
(1) Cortisol
(2) Insulin
(3) Glucagon
(4) Aldosterone
The stem cells which have potency to give rise to all tissues and organs are formed from
1. Trophoblast
2. Umbilical cord
3. Inner cell mass
4. Placenta
Which of the following event does not occur after
implantation?
(a) Appearance of germinal layers
(b) Formation of chorionic villi
(c) Secretion of HCG
(d) Formation of trophoblast and inner cell mass
1. a, d
2. c,d,
3. d only
4. c and d
Chorionic Villi will appear after implantation over
(1) Trophoblast
(2) Uterine tissue
(3) Maternal blood cells
(4) Placenta
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