In humans,approximately $35,000,000$ digestive pits are located in the ....... (in $/mm^2$)
- A$200$
- B$300$
- C$1000$
- D$100$
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Which of the following prevents the layer of epithelial cells in the stomach of chordates from being damaged?
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View SolutionMatch the Column $I$ with Column $II$,with reference to human beings:
Column $I$ (Part of the alimentary canal) Column $II$ (Length) $i$. Duodenum $b$. $26 \ cm$ $ii$. Jejunum $c$. $2.5 \ m$ $iii$. Ileum $d$. $3.5 \ m$ $iv$. Large intestine $a$. $1.5 \ m$
| Column $I$ (Part of the alimentary canal) | Column $II$ (Length) |
|---|---|
| $i$. Duodenum | $b$. $26 \ cm$ |
| $ii$. Jejunum | $c$. $2.5 \ m$ |
| $iii$. Ileum | $d$. $3.5 \ m$ |
| $iv$. Large intestine | $a$. $1.5 \ m$ |
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