CLASSIFICATION Flashcards
What does MRS GREN stand for?
M = Movement R = Respiration S = Sensitivity
G = Growth R = Reproduction E = Excretion N = Nutrition
What is the acronym for characteristics of living things?
MRS GREN
Explain RESPIRATION
Plants and animals use oxygen in the air to turn food into energy
Explain GROWTH
Baby animals grown into adults
Seeds grown into plants
Explain MOVEMENT
Animals move around to get from place to place
Plants turn towards the light and their roots grow down into the soil
Explain SENSITIVITY
Every living thing notices changes in the environment around them and reacts
Explain REPRODUCTION
Animals have babies
New plants grown from seeds
Explain EXCRETION
Waste products are removed from the body
Plants and animals both have to get rid of gas and water
Why is it useful to group things with similar characteristics?
To make them easier to find - this is called classification.
Name the five kingdoms
PP FAB BACTERIA PROTOCTISTA FUNGI PLANTS ANIMALS
What is a single celled organism WITHOUT a nucleus?
Bacteria
What is a single celled organism WITH a nucleus?
PROTOCTISTA
What are organisms which feed on rotting material?
FUNGI
What are organisms which make their own foods?
Plants
What are organisms that feed on other plants and animals?
Animals
How else can species be divided into? - 4 points
PHYLUM
CLASS
ORDER
FAMILY
P COF
Why are species names in Latin?
So the same name can be used all over the world
What is the first part of a species name called?
The genus
What is the second part of a species name tell you?
Exactly which species you are dealing with
What are the names of the two groups animals can be put into?
VERTEBRATES - those with an internal skeleton
INVERTEBRATES - those with NO internal skeleton
How else can animals be classified?
Warm blooded and cold blooded
What is a warm blooded animal?
One with an internal body temperature that stay almost the same all the time
What is a cold blooded animal?
One with an internal body temperature that changes with the temperature around them
What are the key 4 features of a reptile?
- Cold blooded
- Have lungs
- Have dry, scaly skin
- Lay leathery-shelled eggs
Explain NUTRITION
Food is used to provide energy to live
Green plants make their own food using sunlight
Give 4 characteristics of an AMPHIBIAN
- Cold-blooded
- Adults have lungs - larvae have gills
- Moist skin
- Lay jelly-coated eggs in water
Give 4 characteristics of a FISH
- Cold-blooded
- Have gills
- Wet scales
- Lay eggs in water
Give 5 characteristics of BIRDS
- Warm-blooded
- Have lungs
- Feathers on body
- Lay eggs with hard shells
- Have wings
Give 5 characteristics of MAMMALS
- Warm-blooded
- Have lungs
- Have body hair or fur
- Give birth to live young
- Produce milk
What does the word ‘ENDOTHERM’ mean?
warm-blooded, ‘heat from within’
What is the scientific word for cold-blooded?
ECTOTHERM.
It means ‘heat from outside’
What can ENDOTHERMS do?
Control their own body temperature by making their own heat from inside their body.
How is the body temperature of an ECTOTHERM controlled?
By picking up heat from the environment or losing heat to the environment
What is the main difference between an ENDOTHERM and an ECTOTHERM?
The ability to maintain a steady internal body temperature
Why are endothermic animals in cold climates on the large size?
If an animal has a large volume, it surface area is comparatively small so the less relative area there is to lose heat. Being big means being warmer.
What is the secret to Emperor penguins keeping warm?
Huddling - which is an extension of being big
What is a Daphnia - endothermic or ectothermic?
It is an invertebrate therefore ectothermic
Where does a Daphnia keep its heart?
On its back
How do marine iguanas warm up in the morning?
By sleeping with their back towards the sun
How does the colour of a marine iguanas skin help warm it up?
It’s black skin absorbs the heat
What do marine iguanas eat?
Seaweed - it has special nostrils that remove unwanted salt
How do marine iguanas reduce the chilling effect of the sea?
They have a set of blood supply in their limbs
How do crickets make a chirping noise?
By rubbing their wings together
When do crickets chirp faster?
On warmer days
How do you work out the temperature (in degrees c) by counting the number of chirps? - 4
Take number of chirps per minute
Divide by 4
Add 8
Divide by 1.8
Describe an insect - 1
Invertebrate with 3 pair of legs
Describe a mollusc - 3
Invertebrates with 0 legs
Have antennae
Have had shell
Describe arachnids - 3
Invertebrates with 8 legs
No antennae
NOT INSECTS
Describe crustaceans - 1
Invertebrates with more than 3 pairs of legs and antennae
Describe segmented worms - 4
Invertebrates with 0 legs
No antennae or tentacles
Have long bodies
Have rough, segmented skin
