Question

The correct order of steps occurring in nutrition in animals is:

Options

• Ingestion → Absorption → Digestion → Assimilation → Egestion

• Ingestion → Digestion → Assimilation → Absorption → Egestion

• Ingestion → Digestion → Absorption → Assimilation → Egestion

• Ingestion → Assimilation → Digestion → Absorption → Egestion

Answer 1

Ingestion → Digestion → Absorption → Assimilation → Egestion

Explanation:

This sequence represents the complete process of holozoic nutrition (the method used by most animals, including humans). Here is exactly what happens at each step:

1. Ingestion: Taking food into the body (eating).
2. Digestion: The physical and chemical breakdown of complex food into simpler, soluble molecules.
3. Absorption: The digested nutrients pass through the intestinal walls into the bloodstream.
4. Assimilation: The absorbed nutrients are delivered to the body's cells and used for energy, growth, and repair.
5. Egestion: The removal of any remaining, undigested waste material from the body.