Home › UP Board Class 10 › Science › How do Organisms Reproduce › The placenta in humans is best described as:
The placenta in humans is best described as:
AThe egg released by the ovary each month (option)
BA disc of tissue providing nutrient and gas exchange between mother and embryo
CThe female external genitalia
DThe cervix of the uterus
Answer & Solution
Correct answer: B. A disc of tissue providing nutrient and gas exchange between mother and embryo
1. The placenta is a special tissue connecting the embryo to the uterine wall.
2. It carries villi that maximise surface area for exchange.
3. Nutrients and oxygen pass from mother to embryo; wastes pass back.
_Source: NCERT Class 10 Science, Ch 7 "How do Organisms Reproduce", §7.3.3_
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