Question

Types of Heterotrophic Nutrition?​

Answer 1

There are three types of heterotrophic Nutrition:-

• Holozoic Nutrition
• Saprophytic Nutrition
• Parasitic Nutrition

$\bigstar$ $\underline{\pink{\sf{Holozoic\: Nutrition}}}$

The organism feed by ingesting solid organic Matter which is then digested and absorbed into their bodies.

Ex:- Humans , Animals etc.

$\bigstar$ $\underline{\purple{\sf{Saprophytic\: Nutrition}}}$

The organisms which feed on dead and decaying matter.These organisms digest the food externally before the nutrients are observed.

Ex:- Bacteria , Fungi etc.

$\bigstar$ $\underline{\red{\sf{Parasitic\: Nutrition}}}$

This organisms obtain protein from living organisms.These organisms obtain protein by living on or hosting on the body.

Ex:- Fleece , Tapeworm etc.

Additional information:-

Heterotrophic Nutrition:-

• It is a mode of nutrition in which the organisms obtain readymade organic food from outside sources.

• The organisms that depend upon outside sources for obtaining organic nutrients are called Heterotrophs.

• Heterotrophic nutrition is the mode of nutrition in which an organism depends on other living organism for food.

Answer 2

Answer:

TYPES OF HETEROTROPHIC NUTRITION

1. Saprophytic or Saprotrophic Nutrition :

•  It is a mode of heterotrophic nutrition in which food is obtained from organic remains like dead organisms, excreta, fallen leaves, broken twigs, food articles, etc.
• Organisms performing saprophytic nutrition are called saprophytes.

 

2. Parasitic Nutrition : 

• It is a mode of hetrotrophic nutrition in which a living organisms flourishes by obtaining food from another living organism.
• The lving organisms which obtains food and shelter from another organism is called parasite.
• The organism which provides food and shelter to a parasite is known as host.
• An external plant parasite is Cuscuta (Amarbel).
• It is a non-green plant that sends haustroria or sucking roots into host plant for obtaining food and water. 

 

3. Holozoic Nutrition : 

• It is a mode of heterotrophic nutrition which involves intake of solid pieces of food.
• Since solid food is taken in, holozoic nutrition is also called ingestive nutrition.
• The food may consist of another animal, plant or its parts.
• Depending upon the source of food, holozoic organisms are of  three types – Herbivores, carnivores, omnivores.