STEPS OF HOLOZOIC MODE OF NUTRITION(CLASS-10)

CLASS-10  |  CHAPTER-6  | LIFE PROCESSES 

STEPS OF HOLOZOIC MODE OF NUTRITION

The various steps for holozoic mode of nutrition are as follow

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  1. Ingestion

The process of taking food inside the body is called ingestion.

  1. Digestion

         In digestion the ingested food is converted into simple form with the               help of digestive enzymes.

  1. Absorption
    In this stage the food digested in second step is absorbed into the cells of body. Absorption takes place in the small intestine.
  2. Assimilation

      Assimilation is the process of utilizing the food absorbed in third step by        various cells of the body.

  1. Egestion
    Egestion is the final step of holozoic nutrition in which the undigested food is removed from the body.

HERBIVORES CARNIVORES AND OMNIVORES ORGANISMS

The organisms having holozoic nutrition are further classified in three categories. These are Herbivores, Carnivores and Omnivores.

(A)HERBIVORES  
The organisms which consume or eat only plants as their source of food are called herbivores. For example, cow, rabbit, goat, deer, locust and camel etc.

(B)CARNIVORES
The organisms which eat other animals or meat only are called carnivores. For example, lion, bear, snake, crocodile, lizard, eagle and wolf etc.

(C) OMNIVORES
The organisms which eat both plant food as well as meat of animals are called omnivores. The best examples of omnivores are human beings, crow, dog, sparrow and ants etc.

Answers the following Questions in Comment box

  1. ……………………. is known as the site of absorption?
  2. The hair like structure present in the small intestine are known as……………….
  3. The organisms eat both plants and animals are known as……………………
  4. ………………… is the process to remove the undigested food from the body.