Transcript Variety of Life - Clounagh Science's Blog
Variety of Life
Is It Alive?
• • How do you know if something if alive or not?
There are
seven life processes (MRS GREN)
:
1. M
ovement
2. R
espiration
3. S
ensitivity
4. G
rowth
5. R
eproduction
6. E
xcretion
7. N
utrition
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 • • Organism means There are two
1. Plants living thing big groups:
•
2. 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.
Animals can be divided into:
vertebrates
(have a backbone) • • • •
2. invertebrates
(no backbone) Which group do we belong to?
Vertebrates Which group do worms belong to?
Invertebrates
Vertebrates • There are five groups (BFARM):
1. B
irds
2. F
ish
3. A
mphibians
4. R
eptiles
5. M
ammals
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
• The
poison dart frog
is lethal to humans Amphibians
• 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
:
Head Thorax Abdomen The Damselfly
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
•This is a question key Keys •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