1. BIOTIC RELATIONS
Mireia Poveda Bort
2nd B

2. INDEX:
1. INTERSPECIFIC RELATIONS:
1.1 Mutualism
1.2 Commensalism
1.3 Inquilinism
1.4 Paratism
1.5 Depredation

3. 2. INTRASPECIFIC RELATIONS:
2.1 Gregarious
2.2 Colonial
2.3 Social
2.4 Familial

4. 1. INTERSPECIFIC
RELATIONS

5. 1.1 MUTUALISM
- Two or more individuals are benefit.
- Example: oxpeckers lives on the zebras
sustaining itself by eating all of the bugs
and parasites on the animal.

6. VIDEO & PHOTO: MUTUALISM

7. 1.2 COMMENSALISM
- Two living organisms are involved: one is
benefit, but the other is not affected.
- Example: the decorator crabs use the sea
sponges to camouflage themselves. It
provides protection to the decorator crab
without harming the sea sponges.

8. VIDEO &
PHOTO:COMMENSALISM

9. 1.3 INQUILINISM
- Two individuals involved:
- Example: some insects live in the homes of
gophers and feed on fungi, roots…

10. VIDEO & PHOTO: INQUILINISM

11. 1.4 PARASITISM
- Organisms of different species where one
of them (the parasite) benefits at the
expense of the other.
- Example: the mosquito feeds on the
human’s blood.

12. VIDEO & PHOTO: PARASITISM

13. 1.5 DEPREDATION
- One individual (a predator) kills and eats
another living being (the prey)
- Example: cheetahs eat gazelles.

14. VIDEO & PHOTO: DEPREDATION

15. 2. INTRASPECIFIC
RELATIONS

16. 2.1 GREGARIOUS
- Groups of individuals: they are all benefit.
- Example: migrating birds.

17. VIDEO & PHOTO: GREGARIOUS

18. 2.2 COLONIAL
- Related individuals: they are all benefit.
- Example: coral

19. VIDEO & PHOTO: COLONIAL

20. 2.3 SOCIAL
- Groups of individuals that live and work
together, they are all benefit.
- Example: ants.

21. VIDEO & PHOTO: SOCIAL

22. 2.4 FAMILIAL
- Groups of related individuals which live
together to procreate and protect the
young
- Example: family of lemurs.

23. VIDEO & PHOTO: FAMILIAL

24. SOURCES:
- Images by Google
- buzzle.com
- yourdictionary.com
- YouTube
- Book Natural Science 2. Santillana
- My own ideas
- And some more…