Placenta
Hardbiology
Human placenta is functionally described as:
Select the correct option:
Solution
Incorrect! Answer:
Haemochorial
- Placenta Definition: An organic link between the fetus and mother for physiological exchange.
- Classification: Based on the layers of tissue separating maternal and fetal blood.
- Haemochorial Type: In humans, the maternal tissue (endometrium) is eroded such that the maternal blood comes into direct contact with the fetal chorion (specifically the trophoblast cells).
- Exchange: This allows for highly efficient nutrient and gas exchange but also creates a risk of exposure to certain pathogens or maternal immune factors.
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About This Question
- Subject
- biology
- Chapter
- reproduction
- Topic
- placenta
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Haemochorial
- Placenta Definition: An organic link between the fetus and mother for physiological exchange.
- Classification: Based on the layers of tissue separating maternal and fetal blood.
- Haemochorial Type: In humans, the maternal tissue (endometrium) is eroded such that the maternal blood comes into direct contact with the fetal chorion (specifically the trophoblast cells).
- Exchange: This allows for highly efficient nutrient and gas exchange but also creates a risk of exposure to certain pathogens or maternal immune factors.
This hard difficulty biology question is from the chapter reproduction, covering the topic of placenta. It appeared in the 2025 exam.
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