21. Measurements of the inner and the outer surface area of two parts of the small intestine of the four
mammals were taken and the data is displayed in the given table. After studying this measurements
try to answer the below given questions.
1+1
Mammals Ratio of inner surface area to outer surface area
Domestic dog
Bat
Duodenum
16:1
282:1
Ileum
11:1
52:1
Rat
7:1
3:1
Human
6:1
3:1
i) Identify the mammal which has the highest number of villi per centimetre of small intestine.
ii) As per the information given in the above table the duodenum is more effective than the ileum in
absorption. Explain the reason using the information from the table.
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Answer:
no i cant cause i dont understand anything
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