Question

All animals do not digest food inside their body. Justift

Answer 1

Animals require a digestive systembecause they take food in the form that body cannot directly utilize. ... Thereforedigestive system becomes very important animals. There are various other organisms apart from animalsthat possess a digestive system For example amoeba has food vacuole that helps in digestion.

Answer 2

Answer:

Although internal digestion of food through the digestive system is the common mode of digestion, not all organisms undergo internal digestion.  

Explanation:

Some organisms like saprophytes digest food by external digestion. Saprophytes feed and grow on dead organisms. They digest complex organic matter by external digestion and feed on the simple products.

Bacteria and fungi are saprophytes that release digestive juices into their surrounding environment and digest the simple food matter.