Chapter 2: Nutrients in Animals

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Nutrition in Animals


Write one similarity and one difference between the nutrition in amoeba and human beings.


The process of taking in food and its utilization in the body by an animal is called animal nutrition. All animals require food for energy, growth, and repair of damaged body parts. The breakdown of complex components of food into simpler substances is called digestion. In both amoeba and human beings, digestive juices are present that helps in the breakdown of the food into simpler substances. 

The digestion of food is a simple process in amoeba. The food captured by the pseudopodia is digested by the food vacuole. Amoeba secrets digestive juices in the food vacuole which help in the digestion of food particles.

In human beings, digestion is a complex process. In humans, the food entered the body through the buccal cavity (mouth). The saliva present in the mouth digests the starch present in the food. The food goes to the stomach through the esophagus. The complex process of digestion and absorption takes place and then the undigested food was removed from the body in the form of feces.

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