Transcript Biotic/Abiotic

WarmUP 1/21 page 156
What does the prefix
Bio
mean?
Organisms and
the
Environment
Page 157
develop a strategy to separate the different
aspects of this environment into 2 different
categories
Living and NonLiving
Biotic
Abiotic
Is living or was
once living
Has never
lived
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Pg. 159BIOTIC
ABIOTIC
· Whale
· Clock
· Water
· Fish
· Paper
· Glass
· Aluminum
· Wooden
Ruler
· Sand
• Finger
· Clouds
Nails
· Corpse
· Pipe
· Snail
· Cotton
· Steak
Fabric
· Pork Chops · Wool
· Salad
· Gold
· Bread
· Plastic
· Plant
· Grapes
· Hair
· Air
· Paper
Warm-Up
IN YOUR NOTEBOOK!

Write the question & your answer
What is the difference
between something that
is living and something
that is non-living?
Characteristics of
Living Things
Characteristics of
Living Organisms
All things considered to be alive
have what characteristics in
common?
 Make
a list of reasons why you think the following
organisms are considered “alive”.
Characteristics of
Living Things
1.
Made of Cells
unicellular vs.. multicellular
Red Blood cells
Onion skin epidermal cells
Human cheek cells
Characteristics of Living Things
2. Grows and develops
 Increase
in cell size and/or number
 Includes:
development, aging, death
 Differentiation
– cell specialization
for a certain job
Characteristics of Living Things
3. Obtains & uses Energy
 Metabolism
(sum of all chemical
reactions)
 Heterotroph
(other feeding)
vs. autotroph (self-feeding)
Characteristics of Living Things
4. Reproduces
two kinds of reproduction:
- asexual – takes one
to make more
- sexual – takes two
Characteristics of Living Things
5. Responds to the Environment
a. Movement – internal or
external
b. Irritability - ability to respond to
a stimulus
Examples of stimuli : sight, sound, touch,
pressure, temperature, chemicals, color,
light, other?
c. Adaptability
Characteristics of Living Things
6. Ability to adapt (Evolution)
 Evolution - gradual change in a
population of organisms over time
 Individuals DO NOT evolve
Biotic vs. Abiotic
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Ecosystem:
made up of biotic and
abiotic factors interacting
with each other.
Biotic Factors
 the
living things in the
ecosystem.
 Examples:
Plants, animals, fungi,
protists and bacteria

not alive, nonliving
factors that affect living
organisms.

Examples:
Abiotic Factors

temperature, soil, light,
aspect, atmospheric
gases present, sunlight,
wind, wind patterns,
precipitation, habitat,
season, cloud cover,
altitude and location of
the ecosystem.
Biotic and abiotic
factors are interrelated.
Abiotic factors don’t need biotic factors
but
Biotic factors cannot exist without the abiotic factors.
Biotic Factors
 From
the tiniest bacteria to the largest
mammal, all need abiotic factors in order
to survive.
 They need air to breath and light to
photosynthesize, for example.
Abiotic Factors
 The
seasons, cloud cover, altitude and
aspect and location of the ecosystem will
determine how much sunlight plants
receive and therefore will govern
photosynthesis.
The Impact of Changing
Factors
 If
a single factor is changed, perhaps by
pollution or natural phenomenon, the
whole system could be altered. For
example, humans can alter environments
through farming or irrigating. While we
usually cannot see what we are doing to
various ecosystems, the impact is being
felt all over. For example, acid rain in
certain regions has resulted in the decline
of fish population.