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Transcript
Variety of Life Is It Alive? • • 1. 2. 3. 4. 5. 6. 7. How do you know if something if alive or not? There are seven life processes (MRS GREN): Movement Respiration Sensitivity Growth Reproduction Excretion Nutrition MRS GREN • Movement- we need to move around to get food, plants can move their leaves towards sunlight • Respiration- both plants and animals take in Oxygen from the air to release energy • Sensitivity- we are all sensitive to the cold, acidity etc. MRS GREN • Growth- We all grow up (and out!) • Reproduction- All living things make more of themselves • Excretion- Getting rid of waste e.g. we breathe out Carbon Dioxide • Nutrition- Eating (plants take in nutrients from the ground) Organisms • • 1. 2. • Organism means living thing There are two big groups: Plants Animals There are also bacteria and viruses that make us sick Classification • Carl Linnaeus, a Swedish scientist came up with the classification system • Organisms are placed in groups if they are similar to each other Animals • 1. 2. • • • • Animals can be divided into: vertebrates (have a backbone) invertebrates (no backbone) Which group do we belong to? Vertebrates Which group do worms belong to? Invertebrates Vertebrates • 1. 2. 3. 4. 5. There are five groups (BFARM): Birds Fish Amphibians Reptiles Mammals Weird Mammals • Dolphins- they have lungs A Bottlenose Dolphin Weird Mammals • Whales- have lungs Killer Whales Weird Mammals • The Blue Whale- the largest animal Weird Mammals • Bats- they are related to rodents Reptiles • The Tortoise live on land Reptiles • Turtles live in water The Green Sea Turtle Birds • Emperor Penguins are one of the few organisms to live in Antarctica Amphibians • The Fire salamander can re-grow legs that have been cut off Amphibians • The poison dart frog is lethal to humans Fish • Sharks are fish, they have gills The Great White Shark Annelids • These are Earthworms and leeches • They are invertebrates • They have rounded bodies • Their body is segmented Arthropods • This big group (phylum) of ancient invertebrates include smaller groups (classes) of insects, spiders, millipedes and crabs • They have a hard body • It is divided into segments • They have jointed legs Arachnids • They have 8 legs • Two body parts and no wings Insects • They have 6 legs and two pairs of wings • They have 3 body parts: Thorax Head The Damselfly Abdomen Insects (Stag Beetle) Head Thorax Abdomen Molluscs • These are slugs, snails, squid and the octupus • They have soft bodies with a head and a muscular foot Plants • These are divided into: 1. Flowering plants (conifers and seed producing flowers) 2. Non-flowering plants (Algae, ferns and mosses) Non-Flowering Plants Algal bloom on a river Flowering Plants This Passion Flower makes seeds Keys •This is a question key •It can be used to separate organisms according to their characteristics •Can you name the invertebrate A, B, C and D A= Ant B= Mite C= Spider D= Mayfly Diagram Keys