ENVIRONMENTAL STUDIES

1. ECOSYSTEM

2. OBJECTIVES
From this slide will come to know about the
following things:-
• Ecology
• Ecosystem & its uses

3. ECOSYSTEM
• Ecology is study which deals with the relationship of life forms
with each other.
• Ecosystem is defined as a community of organism living in a
particular environment
Uses
• It is sustainable group of organism in a particular physical
environment.
• Energy flow in am ecosystem lads to clearly define tropic
structures ,biotic diversity and material cycles.

4. STRUCTURE AND FUNCTIONS OF AN
ECOSYSTEM

5. OBJECTIVES
STRUCTURAL ASPECTS
 Structure of an ecosystem
 Abiotic & Biotic components
 INORGANIC AND ORGANIC Components
 PRODUCERS
 MACRO-CONSUMERS

6. STRUCTURE OF ECOSYSTEM
Structure of an ecosystem can be divided in to two
groups:-
i. Abiotic Component
ii. Biotic Components Structure of
Ecosystem
Abiotic
component
Biotic
component

7. ABIOTIC & BIOTIC COMPONENTS
ABIOTIC COMPONENTS
 These are the all non-living
components of the
ecosystem.
 Ex:-soil, air, temperature,
etc, etc………
BIOTIC COMPONENTS
 These are the all living
organism of the ecosystem.
 EX:- Plants , animals,
humans etc………

8. BIOTIC STRUCTURE
Biotic components are divided into two groups:-
Autotrophs
Heterotrophs
Biotic
Structure
Autotrophs
Heterotrophs

9. Autotrophs & Heterotrophs
AUTOTROPHS
o They are the green plants &
produce their own food.
o They transform solar energy
into chemical energy
consisting of organic
compound.
HETEROTROPHS
 They are the organism
which depends on plants for
their food
 They cannot prepare their
own food.

10. Autotrophs & Heterotrophs
AUTOTROPHS
o They are the green plants & produce their own food.
o They transform solar energy into chemical energy consisting
of organic compound.
HETEROTROPHS
 They are the organism which depends on plants for their food
 They cannot prepare their own food.

11. PRODUCERS,CONSUMERS AND
DECOMPOSER

12. OBJECTIVES
From this slides u will come to know:-
What are Producers, Consumers, and
decomposer…
Herbivorous animals, carnivorous animals

13. PRODUCERS
• These are the autotrophic organism(plants).
• They Prepare their own food.
• Ex:- Plants.

14. CONSUMERS
Consumers are the hetrotrophic organism.
They cannot prepare their own food.
They dependent on autotrophs for their food.
Consumer includes all herbivores, carnivores
and omnivores
Ex:-Rabbit, Goats etc

15. HERBIVOROUS AND CARNIVOROUS
Herbivorous
• Herbivorous are those
animal which only eat
plants or which only
depends on
(Producers).
• Ex:-Goat , Elephant
etc….
Carnivorous
• Herbivorous are those
animal which only eat
flash or meat
• Ex:-Tiger, Fox etc…

16. DECOMPOSERS
 Decomposer also hetertrophs organism.
 They take their food or nutrients from dead bodies or
dead parts of animals
 EX:- Worms, insects, fungi etc…..

17. TROPHIC LEVELS
Herbivores
Primary
carnivores
Secondary
carnivores

18. THANK YOU