In our mysterious world of nature, animals depend on one another, in terms of food, shelter and even transportation. This form of dependence is named symbiosis. One form of symbiosis is commensalism. Let us explore the concept of commensalism together!

1. CommensalismXinJie HuiXiang Tony

2. What does commensalism mean?
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3. x
What does commensalism mean?
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“
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One organism benefits
from the relationship
while the other species
involved neither benefits
nor is harmed.

9. 1. Chemical commensalism

10. Involves at least one species of bacteria
feeding on the chemicals produced or
the waste products that are not used by
the other bacteria
(Most often observed between two species of bacteria)

11. Involves at least one species of bacteria
feeding on the chemicals produced or
the waste products that are not used by
the other bacteria
(Most often observed between two species of bacteria)

12. Involves at least one species of bacteria
feeding on the chemicals produced or
the waste products that are not used by
the other bacteria
(Most often observed between two species of bacteria)
Acetobacter oxydans
carries out oxidation on…
Mannitol

13. Involves at least one species of bacteria
feeding on the chemicals produced or
the waste products that are not used by
the other bacteria
(Most often observed between two species of bacteria)
Acetobacter oxydans)
carries out oxidation on…
Mannitol
TO PRODUCE…

14. (Most often observed between two species of bacteria)
Involves at least one species of bacteria
feeding on the chemicals produced or
the waste products that are not used by
the other bacteria
Fructose

15. (Most often observed between two species of bacteria)
Involves at least one species of bacteria
feeding on the chemicals produced or
the waste products that are not used by
the other bacteria
Fructose

16. (Most often observed between two species of bacteria)
Involves at least one species of bacteria
feeding on the chemicals produced or
the waste products that are not used by
the other bacteria
Saccharomyces carlsbergensis
(beneficiary)
FOR…

17. FOOD

18. Inquilinism2.

19. the host organism neither benefits nor is harmed

25. Metabiosis3.

26. Occurs when one species
unintentionally creates a home
for another species through one
of its normal life activities

28. The Gila woodpecker creates holes in
the surface of the cacti when searching
for food and water. These abandoned
holes are then used as homes and
nesting sites by other organisms.

29. Phoresy4.

30. Takes place when one organism
attaches to another organism
specifically for the purpose of
gaining transportation

31. Flower mites are wingless and so use
foraging bees to travel to new
flowers. When bees enter a flower to
collect nectar or pollen the mites
climb on to the bee. The bee then flies to
the next flower and the mites climb off
the bee.