What is teratogenic defect due to chemical agents?

ABone defect due to exposure to chemicals

BHemoglobin malfunctioning due to chemicals

CBone marrow defect due to chemicals

DBirth defect due to utero exposure to chemicals ✓ Correct

Correct answer: (D) Birth defect due to utero exposure to chemicals

Explanation

A teratogenic effect is a birth defect produced when a developing foetus is exposed to a harmful chemical in the womb.

Bone defects from chemical exposure describe a narrower skeletal harm, not the developmental origin meant here.

Haemoglobin malfunction from chemicals points to a blood disorder rather than a foetal malformation.

Bone marrow defects from chemicals affect blood-cell formation, again missing the in-utero developmental sense.

The defining feature of a teratogen is that it acts during pregnancy on the developing embryo or foetus.

Thalidomide is a classic teratogen that caused severe limb deformities in newborns.

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