What is the function of digestive enzymes?
The function of digestive enzyme is to hasten the process of breaking up of complex molecules into simpler and absorbable molecules. This makes it easy for the body to absorb food. 9. How is the small intestine designed to absorb digested food? Answer: In the small intestine the innermost layer is in the shape of finger like structures. These are known as villi. Several folds because of villi increase the absorbing surface of small intestine. The blood capillaries in villi absorb simpler molecules from food. 10. What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration? Answer: In the aquatic habitat the concentration of oxygen is good up to a certain depth only. Moreover, as oxygen is available as dissolved in water, so taking oxygen from there is not a very efficient method to that. In terrestrial habitat oxygen is available in free form so it is easier to absorb by organisms. This is more efficient so terrestrial organis
