The incorrect statement about placenta is :
The incorrect statement about placenta is :
Options
The incorrect statement is C: It has a very small surface area for glucose and oxygen to pass from mother to the embryo.
Marking Scheme
- 11 Mark for identifying Option C as the incorrect statement.
Hint
Think about how the exchange of nutrients and oxygen between the mother and the embryo requires a highly efficient system with a large surface area.
Quick Oral Answer
The placenta is a disc-like structure embedded in the uterine wall that facilitates the exchange of nutrients, oxygen, and waste products between the mother and the embryo.
Analysis & Explanation
The placenta is a specialized physiological structure embedded in the uterine wall during pregnancy. It contains finger-like projections called villi on the embryo's side of the tissue. On the mother's side, there are blood spaces that surround these villi. This design provides a very large surface area (not a small one) for the efficient transfer of glucose, oxygen, and other essential nutrients from the mother's blood to the developing embryo, as well as the removal of waste products. Therefore, statement C is false.
Common Mistakes
- 1Students often confuse the embryo's side and the mother's side of the placenta. Remember, villi are on the embryo's side, while blood spaces are on the mother's side.
Interesting Facts
The placenta acts as a multi-functional organ, performing the roles of the lungs (gas exchange), kidneys (waste excretion), and digestive tract (nutrient absorption) for the developing fetus!
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2024?
This question carries 1 mark in the CBSE Class 10 Science 2024 examination.
Which chapter does this question come from in Science?
This question is from the chapter "How do Organisms Reproduce?" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Human Reproduction - Placenta" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2024 paper?
This is a MCQ question from Section A in the CBSE Class 10 Science 2024 paper.