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PRODUCERS
A producer is an autotrophic organism that serves as a source of energy for
other organisms in a food chain. Producers include green plants, which
produce food through photosynthesis, and certain bacteria that are capable
of converting inorganic substances into food through chemosynthesis.
Chemosynthesis: The formation of organic compounds using the energy
released from chemical reactions instead of the energy of sunlight. Bacteria
living in aphotic areas of the ocean are able to survive by chemosynthesis.
They use energy derived from the oxidation of inorganic chemicals, such as
sulfur released from deep hydrothermal vents, to produce their food.
CONSUMERS
A heterotrophic organism that feeds on other organisms
in a food chain.
Herbivores that feed on green plants and detritivores
that feed on decaying matter are called primary
consumers
Carnivores that feed on herbivores or detritivores are
called secondary consumers, while those that feed on
other carnivores are called tertiary consumers.
FOOD WEB
DECOMPOSER
Decomposer: An organism that breaks down
organic matter and uses it as energy.
They contribute to the ecosystem by breaking
organic matter down and using some for energy and
the rest helps the soil become more fertile making
plants grow easier and thus the circle of life begins
again.
NUTRIENT CYCLE
PHOTOSYNTHESIS
The leaves absorb light from the sun they also absorb carbon
dioxide and water.
The leaves then use carbon dioxide and water into glucose using the
light of the sun. This is called photosynthesis.
Photosynthesis: The process by which green plants, algae, diatoms,
and certain forms of bacteria make carbohydrates from carbon
dioxide and water in the presence of chlorophyll, using energy
captured from sunlight by chlorophyll, and releasing excess oxygen
as a byproduct.
PHOTOSYNTHESIS CONT.
ATP: Serves as a source of energy for many metabolic
processes. ATP releases energy when it is broken down into ADP
by hydrolysis during cell metabolism.
Chlorophyll: The green pigment of plants and photosynthetic
algae and bacteria that traps the energy of sunlight for
photosynthesis.
Chloroplast: A plastid in the cells of green plants and green
algae that contains chlorophylls and creates glucose through
photosynthesis.
PHOTOSYNTHESIS CONT.
In plants and algae, photosynthesis takes place in organelles called
chloroplasts.
ATP is synthesized using light energy absorbed by chlorophyll and accessory
pigments such as carotenoids and phycobilins, and water is broken apart into
oxygen and a hydrogen ion, with the electron of the hydrogen transferred to
another energy molecule.
Carotenoids: Any of a class of yellow to red pigments found especially in plants,
algae, and photosynthetic bacteria.
Phycobilin: absorb the blue and blue-green frequencies of light which
penetrate deep water, and allow red algae to carry on photosynthesis at greater
depths than other organisms.
PHOTOSYNTHESIS CONT.
Carbon is broken away from carbon dioxide and
combined with hydrogen to create carbohydrates.
Some of the carbohydrates, the sugars, can then
be transported around the organism for immediate
use; others, the starches, can be stored for later use.
QUESTIONS
What is Photosynthesis?
What is a Producer?
What is a Consumer?
What is a Decomposer?
How do Decomposers contribute to the life cycle?
What is the difference between a Decomposer a
Consumer and a Producer
SOURCES
www.buzzle.com
http://science.yourdictionary.com/
alaska.fws.gov
