In holozoic nutrition, the first essential step for complex organisms is ______

Question

Question

This question was previously asked in

RRB NTPC Graduate Level CBT-I Official Paper (Held On: 05 Jun, 2025 Shift 2)

Answer 1

The correct answer is Ingestion.

Key Points

Ingestion is the first step in holozoic nutrition, where food is taken into the body for further processng.
It involves the intake of solid or liquid food through specialized structures such as the mouth or oral cavity in complex organisms.
Ingestion enables organisms to acquire nutrients essential for their survival and growth.
Holozoic nutrition is characteristic of most animals, including humans, and consists of multiple stages such as ingestion, digestion, absorption, assimilation, and egestion.
This step is critical for initiating the process of converting complex organic substances into simpler, absorbable forms for energy and cellular function.

Additional Information

Holozoic Nutrition: A mode of nutrition where organisms ingest solid food, digest it internally, and absorb nutrients.
Digestion: The biochemical process that breaks down complex food molecules into simpler substances using enzymes.
Absorption: The process where digested nutrients are absorbed into the bloodstream or cells for distribution throughout the body.
Assimilation: The utilization of absorbed nutrients by cells to produce energy and build cellular structures.
Egestion: The expulsion of undigested food and waste materials from the body after the completion of digestion.