Ch 15 NOTES #1 4/11 INTERACTIONS

WELCOME TO A NEW MARKING PERIOD! Please take a pre-test for Chapter 15 and answer the best you can.

ECOLOGY…… What do you think about when you hear this word?

LEARNING TARGETS OVERACHING GOAL: to understand the interactions between animals and their environment. LEARNING TARGET * I can explain what symbiosis is and tell the difference of the 3 types.

ECOLOGY Studying the interrelationship between animals and their environment

HABITAT – where organism lives NICHE – role in community what it eats, where lives, etc.

POPULATION – group of one species COMMUNITY – several populations together

INTERACTIONS BETWEEN ORGANISMS

1. SYMBIOSIS – living together a. MUTUALISM 2 organisms living together where both benefit EX: Termite & protozoa Bees/birds and flowers Lichen – algae and fungus

b. PARASITISM – one organism benefits, the other harmed PARASITE – lives on another organism HOST - organism the parasite lives on EX: tapeworms mosquitoes fleas

c.Commensalism - one animal benefits and the other unaffected EX: burrs sticking on fur grazing animals kicking up bugs for birds

WARM UP #1 4/12 VOCAB: * do not use notes! 1.Living together 2.One organism benefits, the other nothing 3.Both organisms benefit 4.One benefits, the other harmed 5. Now go back and see if you are right with your notes, correct any you got wrong.

LEARNING TARGETS 4/12 Look at your 1 st target. Put a 1-5 in how good you feel you know it in the 1 st space. Add a new target today: I can describe a predator/prey relationship.

FINISH NOTES CH 15 #1 Watch video Assignment

2. COMPETITION – the struggle for limited resources LIMITED RESOURCES: space, light, food, water

3. Predator/ Prey PREDATORS – animals that seek out and kill other animals for food PREY – organisms that are eaten

Prey species often evolve protective mechanisms

Mimicry

Methods of defense: (KNOW 5) Camouflage Bright Colors Poison Smell/Taste Staying in Large Groups (herds) Mimicry Horns/ antlers Roars or Frightening Sounds

PLANT ADAPTATIONS EX: Spines Waxy leaves Deep roots Wide leaves Covered seeds Thick bark Drop leaves Tons more!

What are the 3 main types of interactions we talked about? Symbiosis Competition Predator /Prey