1
Energy Flow
Through an
Ecosystem
FoodChains, Food Webs,
Food Chains, Food Webs,
Energy Pyramids
Energy Pyramids
Submitted By:
Submitted By:
Name: Diksha Kulshrestha
Name: Diksha Kulshrestha
Class: MSc. Zoology 3
Class: MSc. Zoology 3rd
rd
Semester
Semester
Roll No. : 247422850011 Enrollment No. : MSU24036130
Roll No. : 247422850011 Enrollment No. : MSU24036130
College: Shri Ram College, Muzaffarnagar (742)
College: Shri Ram College, Muzaffarnagar (742)
Submitted To:
Submitted To:
Dr. Reetu Pundir Mam
Dr. Reetu Pundir Mam
2.
2
•Begins with the
Beginswith the
SUN
SUN
•Photosynthesis
Photosynthesis
6CO2 + 6H2O + sunlight & chlorophyll
C6H12O6 + 6O2
3.
3
Photosynthesis
Photosynthesis
•Chemical reaction wheregreen plants
Chemical reaction where green plants
use
use water & carbon dioxide
water & carbon dioxide to store the
to store the
sun’s energy in glucose
sun’s energy in glucose
•ENERGY is stored in glucose
ENERGY is stored in glucose
•Glucose is stored as starch in plants
Glucose is stored as starch in plants
4.
4
Organisms that can
Organismsthat can
make glucose during
make glucose during
photosynthesis are
photosynthesis are
called
called PRODUCERS.
8
The
The energy thatis not
energy that is not
used by producers
used by producers can
can
be passed on to
be passed on to
organisms that cannot
organisms that cannot
make their own
make their own
energy.
energy.
10
Consumers that eatproducers
Consumers that eat producers
to get energy:
to get energy:
•Are first order (1st
) or
primary consumers
•Are herbivores (plant-eaters)
11.
11
Most
Most of the
ofthe
energy the
energy the
primary consumer
primary consumer
gets from the
gets from the
producer is used
producer is used
by the consumer.
by the consumer.
12.
12
Some
Some of the
ofthe
energy moves into
energy moves into
the atmosphere as
the atmosphere as
heat.
heat.
13.
13
Some energy inthe
Some energy in the
primary consumer is
primary consumer is
STORED
STORED &
& not lost
not lost
to the atmosphere or
to the atmosphere or
used by the
used by the
consumer itself.
consumer itself.
This energy is
This energy is
available
available for another
for another
consumer
consumer (predator).
(predator).
14.
14
A Consumer thatEats Another
A Consumer that Eats Another
Consumer for Energy:
Consumer for Energy:
•Is called a secondary or
Is called a secondary or
2nd order consumer
2nd order consumer
•May be a
May be a carnivore
carnivore or
or
a
a omnivore
omnivore
•May be a
May be a predator
predator
•May be a
May be a scavenger
scavenger
15.
15
Most
Most of the
ofthe
energy the
energy the
secondary
secondary
consumer gets
consumer gets
from the primary
from the primary
consumer is used
consumer is used
by the secondary
by the secondary
consumer.
consumer.
16.
16
Some
Some of the
ofthe
energy is lost as
energy is lost as
heat
heat, but some
, but some
energy is stored
energy is stored
and can
and can passed
passed
on to another
on to another
consumer.
consumer.
17.
17
A consumer thateats a
A consumer that eats a
consumer that already ate a
consumer that already ate a
consumer:
consumer:
•Is called a
Is called a 3rd order
3rd order or
or
tertiary consumer
tertiary consumer
•May be a
May be a carnivore or
carnivore or
a omnivore
a omnivore
•May be a
May be a predator
predator
•May be a
May be a scavenger
scavenger
18.
18
Consumers that eatproducers
Consumers that eat producers
& other consumers
& other consumers
Are called
Are called
omnivores
omnivores
Omnivores
Omnivores
eat plants
eat plants
and
and
animals
animals
19.
19
Consumers that hunt&
Consumers that hunt &
kill other consumers are
kill other consumers are
called
called predators.
predators.
The animals that are
The animals that are
hunted & killed are
hunted & killed are
called
called prey.
prey.
20.
20
Consumers that eat
Consumersthat eat
other dead consumers
other dead consumers
are called
are called scavengers
scavengers
21.
21
The
The transfer ofenergy
transfer of energy from
from
the
the sun
sun to
to producer
producer to primary
to primary
consumer then to higher order
consumer then to higher order
consumers
consumers can be shown in a
can be shown in a
FOOD CHAIN.
FOOD CHAIN.
24
Another way
Another way
ofshowing the
of showing the
transfer of
transfer of
energy in an
energy in an
ecosystem is
ecosystem is
the
the
ENERGY
ENERGY
PYRAMID
PYRAMID
25.
25
Energy Pyramids Show
EnergyPyramids Show
•Amount of available
Amount of available
energy
energy decreases
decreases for
for
higher consumers
higher consumers
•Amount of available
Amount of available
energy
energy decreases
decreases down the
down the
food chain
food chain
•It takes a
It takes a large number
large number
of producers
of producers to support a
to support a
small number of primary
small number of primary
consumers
consumers
•It takes a
It takes a large number
large number
of primary consumers
of primary consumers to
to
support a small number of
support a small number of
secondary consumers
secondary consumers