THE ROLE OF ENERGY IN INTERACTIONS AND
INTERDEPENDENCIES IN AN ECOSYSTEM
- AN ECOSYSTEM CONSISTS OF ALL
THE LIVING THINGS IN AN AREA AND THEIR RELATIONSHIPS WITH EACH OTHER AND
WITH THEIR NON-LIVING ENVIRONMENT.
- THE LIVING PARTS OF AN
ECOSYSTEM INCLUDE ALL THE LIVING ORGANISMS SUCH AS THE PLANTS AND ANIMALS.
THE NON-LIVING FACTORS OF AN ECOSYSTEM INCLUDE SUNLIGHT, AIR, WATER, SOIL
AND ROCKS.
- THE DIFFERENT PARTS OF AN
ECOSYSTEM ARE CONNECTED THROUGH INTERACTIONS AND INTERDEPENDENCE
INTERACTIONS IN AN ECOSYSTEM
- THE DIFFERENT PARTS OF AN
ECOSYSTEM INTERACT WITH EACH OTHER. AN INTERACTION IS A RELATIONSHIP IN
WHICH THE PARTIES AFFECT EACH OTHER IN SOME WAY.
- THE INTERACTIONS MAY BE
HARMFUL OR BENEFICIAL TO THE PARTIES INVOLVED.
EXAMPLES OF INTERACTIONS BETWEEN THE PARTS OF AN ECOSYSTEM ARE SHOWN
BELOW
- Insects eat plants which is
beneficial for the insect but harmful to the plant.
- A bee pollinates a flower
which is beneficial for both the bee and the plant.
INTERDEPENDENCE IN
AN ECOSYSTEM
- THE DIFFERENT PARTS OF
AN ECOSYSTEM ARE INTERDEPENDENT ON EACH OTHER. AN INTERDEPENDENCY IS A
RELATIONSHIP IN WHICH BOTH PARTIES DEPEND ON EACH OTHER FOR SOMETHING.
- EXAMPLES OF
INTERDEPENDENCIES IN AN ECOSYSTEM ARE SHOWN BELOW.
-PLANTS DEPEND ON THE SOIL FOR WATER AND NUTRIENTS. WHEN THEY
DIE, NUTRIENTS FROM THEIR DECAYING
BODIES ARE RETURNED TO THE SOIL.
-ANIMALS DEPEND ON PLANTS FOR FOOD AND SHELTER AND PLANTS DEPEND ON
ANIMALS FOR POLLINATION AND SEED DISPERSAL
ENERGY DRIVES INTERACTIONS AND INTERDEPENDENCE IN AN
ECOSYSTEM.
THE SUN IS THE SOURCE OF ENERGY IN ECOSYSTEMS.
Date:
15 JANUARY 2016
PHOTOSYNTHESIS AND RESPIRATION:
HOME
WORK
1.
Figure 1.4 shows an interaction
in an ecosystem. Study the image and answer the following questions.
A. Name the two parties that
are involved in the interaction
B. Describe the interaction
C. Explain how the
interaction could benefit or harm each party.
D. Explain how this
interaction is driven by the need for energy.
2. A bird ate the fruit of a mulberry tree. The seeds passed through
its digestive system and were deposited away from the tree.
A. Explain why this is an example of
interdependency.
B.How is this interdependency driven by the need
for energy?
A. Name the main source of
energy in an ecosystem.
B. Describe how energy flows through the following
food chain:
