alleryEmbryonic stem cells, which can develop into any cell type of the body, are derived from which part of the blastocyst?
ABone marrow
BUmbilical cord
CInner cell mass
DAmniotic fluid
Answer & Solution
Correct answer: C. Inner cell mass
1. Stem cells are undifferentiated cells able to self-renew and differentiate.
2. Embryonic stem cells are extracted from early embryos, specifically from the inner cell mass of the blastocyst.
3. Bone marrow, umbilical cord and amniotic fluid are sources of adult (somatic) stem cells, not embryonic ones, so A, B and D are traps.
4. Hence the answer is C.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Breeding and Biotechnology", p.301_
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