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 |
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Level 1: 80%+
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital

During pregnancy, placenta also acts as an endocrine tissue and produces several hormones which do not include:
1. human chorionic gonadotropin (hCG)
2. human placental lactogen (hPL)
3. progestogens
4. thyroxine
Subtopic:  Embryonic Development till Gastrulation |
 90%
Level 1: 80%+
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Consider the given statements:
I: In the later phase of pregnancy, a hormone called relaxin is also secreted by the ovary.
II: hCG, hPL and relaxin are produced in women only during pregnancy.
 
1. Only I is correct 2. Only II is correct
3. Both I and II are correct 4. Both I and II are incorrect
Subtopic:  Embryonic Development till Gastrulation |
 88%
Level 1: 80%+
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