Presentation on theme: "Predator prey relationships LO: investigating changing populations by looking at predator/prey relationships 1. Write down whether each one is a predator."— Presentation transcript:
Predator prey relationships LO: investigating changing populations by looking at predator/prey relationships 1. Write down whether each one is a predator or prey. 2. For each of the animals, write down two adaptations that it has for either catching prey or avoiding being eaten. 3. Name two adaptations that many predators have for catching and killing prey. 4. Name two adaptations that many prey have to avoid being eaten.
Great white shark attack Killer whales attacking seals Lions and zebra Zebra and croc Killer whale and grey whale Tiger shark and albatross Python and antelope
Lynx and snowshoe hare YearLynx population (thousands) Snowshoe hare population (thousands) 19854020 19863035 19871080 19885060 19897030 1990590 19919030 1992105 199330100 199412020 1. Draw a line graph of this data 2. Which is the predator and which is the prey? 2. What might increase the hare population? 3. What might decrease the hare population? Year Population (thousands)
8D A few words to check Can you match each word to its definition? Carnivores Consumers Producers Herbivores Omnivores Animals that eat plants and animals. Organisms that build food using energy from sunlight. Animals that only eat plants. Organisms that cannot make food by photosynthesis. Animals that only eat animals. Animals that only eat animals. Organisms that cannot make food by photosynthesis. Organisms that build food using energy from sunlight. Animals that only eat plants. Animals that eat plants and animals.
A food web shows the relationship between organism in an habitat. The arrows show what eats what and the flow of energy Battle at krugar http://www.youtube.com/watch?v=LU8DDYz68kM http://www.youtu be.com/watch?v =Qqa0OPbdvjw
Write down the longest food chain you can see in this food web
Write down a food chain from this video Whale shark and krill
1. Here are three food chains: Agrass rabbit fox Bwheat field mouse fox Cwheat field mouse grass snake 1Sketch a pyramid of numbers for food chain A. 2Use all three food chains to draw a food web. 3Name one producer in the food web. 4Name a primary consumer. 5Name a secondary consumer. aIf the field mice died, what would happen to the number of grass snakes? bWhy would this happen? cIf the field mice died, what might happen to the number of rabbits? dWhy might this happen?
Symbiosis- buffalo, birds and bacteria Parasitic mind control http://www.youtube.com/watch?v=lGSUU3E9Zo M&feature=fvsthttp://www.youtube.com/watch?v=lGSUU3E9Zo M&feature=fvst http://www.youtube.com/watch?v=rLtUk- W5Gpk&feature=fvsthttp://www.youtube.com/watch?v=rLtUk- W5Gpk&feature=fvst Zombie snails http://www.youtube.com/watch?v=EWB_COSUXM w Body invaders http://www.youtube.com/watch?v=vMG- LWyNcAs http://www.youtube.com/watch?v=vMG- LWyNcAs
Summary Learning Logs: On your book answer 3 of the following statements: 1.In the lesson I learnt…. 2.I was surprised by…. 3.One thing I liked most about today was…. 4.The main thing I want to know more about is….. 5.I was interested in…… 6.One thing I’m not sure about is….. http://www.youtube.com/w atch?v=tzSvEw4W16Uhttp://www.youtube.com/w atch?v=tzSvEw4W16U