Q11 of 36 Page 1

How is the wall of the small intestine adapted for performing the function of absorption of food?

OR


Out of a goat and a tiger, which one will have a longer small intestine? Justify your answer.


The inner lining of the small intestine has numerous finger-like projections called villi which increase the surface area for absorption of the digested food.


OR


Goat because herbivores eating grass need a longer small intestine to allow a complex carbohydrate like cellulose to be digested. Whereas a carnivore such as Tiger eats meat that is easier to digest, hence has a smaller small intestine.


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9

Two unequal resistances are connected in parallel. If you are not provided with any other parameters (eg. numerical values of I and R), what can be said about the voltage drop across the two resistors?

OR


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Veins are thin walled and have valves. Justify

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Explain how ozone being a deadly poison can still perform an essential function for our environment.

OR


Give reason why a food chain cannot have more than four trophic levels.


 13

State the role of pancreas in digestion of food.