Organisms feed on dead and decaying plants or animals, which is known as saprophytic nutrition, e.g. Fungi, Bacteria, etc.

Respiration - The process by which digested food is broken down with the help of oxygen to release energy.

The process of removal of waste products from the body is called excretion. This step not included in holozoic nutrition.

The process of digestion does not take place in this region. It simply secretes mucus, which serves as a lubricant for easy passage of the undigested matter in the form of faeces.

Expelling out the undigested food material from a cell

HCl kills many bacteria and other microorganisms that enter along with the food.

In multicellular organisms the blood oxygen is very quickly taken up by haemoglobin in the red blood cells making the process of diffusion faster.

Amylase enzyme secreted in saliva helps break down starch. 

Fish have a 2-chambered heart with a single atrium and a single muscular ventricle. 

Soil is not a raw material. In the roots, the surface cells are in contact with soil particles and soil water. Ions and water are absorbed from the soil. Soil itself is not acting as a raw material.

Diffusion isn the process of movement of molecules from one region to another in accordance to concentration gradient, i.e. from the region of higher concentration to the region of lower concentration.

Xylem is a complex tissue which transports sap (water and minerals).

The inner wall of small intestine has many finger-like structures called villi which play an important role in increasing the surface area for absorption.

Veins carry blood towards the heart. Superior and inferior vena cava perform this function.

Cutting and tearing the solid food into small pieces is common for ingestion which is done by teeth in mouth and then various enzymes in alimentary canal.