This ppt describes the mode of nutrition in plants and animals. The mode of nutrition is broadly divided into two categories: autotrophic mode and heterotrophic mode. The autotrophic mode has two types such as photosynthesis and chemosynthesis. In this ppt, only photosynthesis is discussed. The definition of nutrition is provided. The definition of photosynthesis is given with some examples. Heterotrophic nutrition has three types such as parasitic nutrition, saprophytic nutrition and holozoic nutrition. Each section is defined with appropriate examples. Holozoic nutrition in animals has three categories such as herbivores, carnivores and omnivores. All the above mentioned are explained with examples.

1. Mode of
Nutrition
Presented by -
Sheuli Sarkar

2. Table of Contents
01
Definition and its type
02
Autotrophic
Here you could
describe the section
03
Here you could
describe the section
04
Holozoic
Here you could
describe the section
Introduction Heterotrophic

3. Introduction
01
Nutrition is the process of taking in food and
converting it into energy and other vital nutrients
required for life

4. Types of nutrition
Autotrophic Mode
Nutrition
Heterotrophic Mode
Prepares food on their
own
Take food from others

5. Autotrophic
Nutrition
02

6. Autotrophic Nutrition
Autotrophic nutrition is a
process where an organism
prepares its own food from a
simple inorganic material like
water, mineral salts and carbon
dioxide in the presence of
sunlight.

7. Autotrophs example
Plants
● Cactus
● Jade plant
● Rose
Algae
● Green algae
● Red algae
Bacteria
● cyanobacteria

8. Heterotrophic Mode
03

9. Heterotrophic Mode
Heterotroph is an organism that is unable to synthesize its own food,
and therefore, has to rely on other sources, specifically plant and animal
matter.
Types
Holozoic Nutrition
Saprophytic
Nutrition
Parasitic Nutrition

10. Holozoic Nutrition
04

11. Holozoic Nutrition
Holozoic nutrition (Greek: holo-whole ; zoikos-of
animals) is a type of heterotrophic nutrition that
is characterized by the internalization
(ingestion) and internal processing of liquids or
solid food particles.
Examples -
● Human
● Amoeba
● Cat
● Dog

12. Saprophytic Nutrition
05

13. Saprophytic Nutrition
It is a process of chemoheterotrophic extracellular digestion
involved in the processing of decayed (dead or waste) organic
matter.
It occurs in saprotrophs, and is most often associated with fungi (for
example Mucor) and soil bacteria
Examples-
● Rhizopus
● Yeast
● Agaricus

14. Parasitic Nutrition
06

15. Parasitic Nutrition
Parasitic Nutrition is a mode of heterotrophic nutrition where an
organism (known as a parasite) lives on the body surface or inside
the body of another type of organism (known as a host).
The parasite obtains nutrition directly from the body of the host.
Examples-
● Lice
● Tapeworm
● Vampire bats

16. Animals taking
Holozoic nutrition
07

17. Holozoic animals
an organism that mostly feeds on plants.
Examples -
● Cows
● Elk
Herbivores
an organism that mostly eats meat, or the flesh of animals.
Examples -
● bear
● Canidae
Carnivores
an organism that eats plants and animals.
Examples -
● Human
● Foxes
Omnivores

18. Thank you!