Transcript Habitat
Habitat • Habitat is the _______a plant or animal ______ out there life. copyright cmassengale 1 Niche • Niche- ______ of a species in its habitat – Like different baseball player positions • A species' niche includes: – a. ___________ - where it lives in the ecosystem – b. _______________ - all interactions with other species in the ecosystem – c. _____________- its method of obtaining food. 11 2 Two species can share the same ________but not the same ______ Example: Ants and bacteria both live in the dirt (habitat) but have different niches. Ants eat dead insects and bacteria eat dead leaves, dead logs, and animal waste. So ants and bacteria don’t compete for the same _________. The Competitive Exclusion Principle says that… No __ ______ can _______ the ________ ________ at the same time. This would lead to __________. 4 Community Interactions 1. ____________ 2. ____________ 3. ____________ 5 COMPETITION * OCCURS WHEN ORGANISMS ATTEMPT TO USE SAME _____________ (FYI…resources : _____, ________, or _____) creating A WINNER AND A LOSER * COMPETITIVE EXCLUSION PRINCIPLENO TWO SPECIES CAN OCCUPY ___________ _______________ 6 2 Kinds of Competition ______________ Competition _____________ Competition Within a population (__________species) Between populations ( ___________species) Buck vs. Buck Lion vs. Hyena ________ The relationship between predator and prey • Predator and prey relationships affect _______ ________ and _________ • Predator = organism that kills and eats; the ______ • Prey = food; the ______________ 32 8 So… What will happen …? 1… to the prey population, if the predator population increases? 2… to the prey population, if the predator population decreases? 3… to the predator population, if the prey population increases? 4… to the predator population, if the prey population decreases? 1… the prey population will _____________. 2… the prey population will _____________. 3… the predator population will ____________. 4… the predator population will ____________. Symbiosis • Organisms of 2 _________ _______ permanently “_____________” • 3 Types 1. __________ 2. __________ 3. __________ Lichens- symbiotic relationship between __________ & _______ 10 Mutualism _________ species ________ • Ex____________ and Sea Anemone 11 Commensalism One member _________ and the other is ____ helped or harmed. • Ex- Whale and Barnacle 3012 Parasitism one organism _________ and the other is __________. Ex: Dog and a _____ Difference between predation and parasitism... -Parasitism acts _________ -Parasites can’t benefit from dead hosts 13 Let’s Review Symbiotic Relationship Mutualism Commensalism Parasitism Beneficial (+) or Detrimental (-) Organism 1 Organism 2 1. What kind of symbiotic relationship does a lichen exhibit? 2. Identify 2 organisms that have a predator/prey relationship? 3. Two male gorillas compete for territory. Is this interspecific or intra-specific competition? 4. The competitive exclusion principle says that no 2 species can occupy the same _______________. 5. What is the difference between a habitat & a niche? • The diagram to the left represents a tree containing three different species of warbler, A, B and C. Each species occupies a different niche. • A fourth species, D, which has the same environmental requirements as species B, enters the tree at point X. Members of species B will most likely • A. live in equilibrium with species D B. move to a different level and live with species A or C C. stay at that level but change their diet D. compete with species D for resources