Symbiosis

Symbiosis

• Close (intimate) and often long-term interactions between different biological species

• Therefore predation is NOT an example of symbiosis

Symbiosis

• Classified into categories by analyzing degrees of “benefits” for symbionts involved

Symbiosis

• Classified into categories by analyzing degrees of “benefits” for symbionts involved

BOTH

BENEFIT

ONE BENEFITS,

OTHER HARMED

ONE BENEFITS,

OTHER NOT AFFECTED

Symbiosis

• Classified into categories by analyzing degrees of “benefits” for symbionts involved

MUTUALISM PARASITISM COMMENSALISM

BOTH

BENEFIT

ONE BENEFITS,

OTHER HARMED

ONE BENEFITS,

OTHER NOT AFFECTED

Mutualism

Insects and Flowering plants

Lichen

Cleaner Shrimp and Moray eel

Commensalism

Epiphytic Plants

Hermit Crab

Remora

Parasitism

Dodder entwined around field bindweed

Tapeworm

Mosquito

Flea

Classifying Symbiosis… a tricky task

What type of symbiosis best fits this example?

Test your Knowledge:

• On ¼ piece of paper… answer these two questions

Your answer choices:

• Mutualism

• Commensalism

• Parasitism

• Predation

Whale • Often have barnacles

attached to their skin

• The whales function

normally whether or not

barnacles are present

Barnacle • Larva must attach to a surface

• Competition for living space

is fierce

• Feed by filtering water

for plankton

#1. What is this relationship?

#2. What is this relationship?

Indian Pipe Plant

• White (non-photosynthetic)

• Always found near the roots

of large trees (oak, maple) or

their stumps

Oak Tree

• Oak trees with Indian Pipe

presence often have diminished

flowering and seed production Indian Pipe on ground near Oak Tree roots

HOMEWORK FOR TOMORROW

• Reflection question:

Consider your relationship with your parents… classify it as mutualism, commensalism, or parasitism.

Most importantly – explain your reasoning!!