Q. No.In vertebrate eggs with large yolks, cleavage is described as _______ and results in a ________ on top of the yolk.
1. meroblastic/trophoblast
2. holoblastic/blastodisc
3. meroblastic/blastodisc
4. meroblastic/blastomere
Epithelial linings of the digestive tract is derived from the embryonic:
1. ectoderm
2. mesoderm
3. endoderm
4. allantois
Identify the organ system in humans that is derived from all the three embryonic germ layers:
1. cardiovascular system.
2. digestive system.
3. endocrine system.
4. muscular system.
The rudimentary alimentary cavity of an embryo at the gastrula stage is called:
1. vegetal pole
2. primitive streak
3. archenteron
4. blastocoel
The amnion of mammalian embryo is derived from
1. Mesoderm and trophoblast
2. Endoderm and mesoderm
3. Ectoderm and mesoderm
4. Ectoderm and endoderm
The epidermis and the dermis of the skin develops respectively from embryonic:
1. ectoderm, endoderm
2. ectoderm, mesoderm
3. endoderm, mesoderm
4. endoderm, ectoderm
The 'cells of Rauber' are
1. secretory cells of endometrium in uterus
2. inner cell mass of blastocoel
3. outer cells of trophoblast in contact with uterine wall
4. cells of trophoblast, in contact with inner cell mass of blastocyst.
| 1. | hCG, hPL, progesterone, prolactin |
| 2. | hCG, hPL, estrogens, relaxin, oxytocin |
| 3. | hCG, hPL, progesterone, estrogens |
| 4. | hCG, progesterone, estrogens, glucocorticoids |
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