Classification Flashcards
(28 cards)
What is classification?
This is the method used by scientists to order living organisms.
What is a vertebrate?
A vertebrate is an animal with a backbone.
What is an invertebrate?
A invertebrate is an animal without a backbone.
What 5 groups of animal are vertebrates?
Fish, amphibians, reptiles, birds, mammals
What do fish do?
Fish exchange oxygen and carbon dioxide across gills and lay eggs that are fertilized externally.
What do amphibians do?
Amphibians exchange gases though their moist, permeable skin and lay externally fertilized eggs.
What do reptiles and birds do?
Reptiles and birds exchange gases via their lungs and lay internally fertilized eggs.
What do mammals do?
Mammals give birth to live young, which grow inside the body of the mother. Eggs are fertilized internally.
What does poikilotherm mean?
This means that the vertebrates are cold-blooded and can’t control their internal body temperature.
Examples: fish, amphibians and reptiles.
What does homeotherm mean?
This means that the vertebrates are warm-blooded and can control their internal body temperature.
Examples: birds and mammals.
What’s the order we classify living organisms into?
Kingdom Class Order Family Genus Species
What is an easy way to remember how to classify living organisms?
Kings Can Order Family Guy Species
What 5 kingdoms are there?
Animalia, Plantae, Fungi, Protcostista and Prokaryotes.
What features do animalia have?
Animalia are multicellular, their cells do not have chlorophyll or a cell wall and they feed heterotrophically (find food from their environment). Examples: mammals, birds, reptiles.
What features do plantae have?
Plantae are multicellular, their cells do have chlorophyll and a cellulose cell wall and their also
make food by photosynthesis. (autotrophic)
Example: all green plants.
What features do fungi have?
Fungi are multicellular, their cells do not have a chlorophyll and are surrounded by a cell wall not made of cellulose and they also feel on dead organic matter. (saprophytically)
Examples: moulds, mushrooms and yeast.
What features do protoctista have?
Protoctista are unicellular (except seaweed) and their also have a distinct nucleus.
Examples: amoeba and paramecium.
What features do prokaryotes have?
Prokaryotes are unicellular and don’t have a distinct nucleus.
Examples: bacteria and blue-green algae.
Do viruses belong to a kingdom?
No because scientists can’t decide whether they are living organisms or not.
What is a species?
Organisms that are capable of breeding together to produce fertile offspring.
What is important about binomial classification?
It enables scientists to:
- communicate information about the thousands of different species
- recognise areas of great biodiversity that should be targets for conservation efforts.
What does oviparous mean?
Oviparous means eggs are laid.
What does viviparous mean?
Viviparous means where things give birth to young.
Why are shark difficult to categorise?
They are difficult to categorise because they are fish but they give birth to their young and use internal fertilisation.
