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Q. No.During embryonic development:
1.
the trophoblast cells help in the formation of the placenta and inner cell mass differentiates into the embryo
2.
the trophoblast cells differentiate into the embryo and inner cell mass helps in the formation of the placenta
3.
the trophoblast cells help in the formation of the placenta and both trophoblast cells and inner cell mass differentiate into the embryo
4.
the trophoblast cells help in the formation of the placenta and differentiate into the embryo as well
Subtopic: Embryonic Development till Gastrulation |
83%
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The level of which of the following hormones is increased several folds in the maternal blood when compared with a non-pregnant stage?
| 1. | hCG | 2. | hPL |
| 3. | Relaxin | 4. | Thyroxine |
Subtopic: Fetal Development & Parturition |
53%
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The number of eggs released by the mother if she gave birth to identical twins or fraternal twins would respectively be:
| 1. | 1 and 1 | 2. | 1 and 2 |
| 3. | 2 and 1 | 4. | 2 and 2 |
Subtopic: Fertilization |
60%
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Identify the correct statement:
| 1. | Sertoli cells help in spermiation |
| 2. | The sperms are stored in seminal vesicles in humans |
| 3. | Corpus Albicans secretes large amounts of progesterone |
| 4. | For normal fertility, at least 40% sperms must show vigorous motility |
Subtopic: Spermiogenesis/Sperm Structure/Hormonal Regulation |
70%
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The primary oocyte divides to produce:
| 1. | A large diploid secondary oocyte and a small haploid first polar body |
| 2. | A large haploid secondary oocyte and a small haploid first polar body |
| 3. | A large diploid secondary oocyte and a small haploid second polar body |
| 4. | A large haploid secondary oocyte and a small haploid secondary polar body |
Subtopic: Female Reproductive System-2 |
74%
From NCERT
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What ensures that, almost always, only one sperm fertilizes the ovum?
1. Zona pellucida
2. Corona Radiata
3. Acrosome of the sperm
4. Hyaluronic acid surrounding the released ovum
Subtopic: Fertilization |
79%
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The direct cause of ovulation during the menstrual cycle is:
| 1. | A sharp fall in the levels of estrogen |
| 2. | A dramatic rise in the secretion of FSH |
| 3. | The beginning of the secretion of progesterone |
| 4. | A surge in the secretion of LH |
Subtopic: Menstrual Cycle: Luteal Phase |
87%
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The peak secretion of which of the following hormones does not occur just before ovulation during a normal menstrual cycle?
| 1. | LH | 2. | FSH |
| 3. | Progesterone | 4. | Estrogen |
Subtopic: Introduction to Menstrual Cycle: 2 |
73%
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During the proliferative phase of the menstrual cycle:
| 1. | the Graafian follicle ruptures and is converted to corpus luteum |
| 2. | the uterine endometrium regenerates |
| 3. | estrogen secretion is at its lowest rate for the given cycle |
| 4. | corpus luteum secretes large amount of progesterone |
Subtopic: Introduction to Menstrual Cycle: 1 |
73%
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The ducts of the seminal vesicles in humans:
| 1. | join the vas deferens to form the ejaculatory duct |
| 2. | open into the ejaculatory ducts which continue into the urethra |
| 3. | join each other and the common duct opens into the prostatic duct |
| 4. | transport the stored sperms to the outside through the urethra |
Subtopic: Male Reproductive Duct System |
60%
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