science-classification Flashcards
(20 cards)
Define ‘dichotomous key’.
A key with two choices at each stage.
Identify three examples of plants found in the plant kingdom.
Moss, pine tree, grasses
What is a taxonomist?
A scientist who specialises in grouping and naming things
Identify the classification levels taxonomists use to classify organisms. Eg. Kingdom
Kingdom, phylum, class, order, family, genus, species
How many kingdoms are there? Name them and give an example of an organism found in each kingdom.
There are 5 kingdoms. Animalia, plantae, fungi, portist, monera Animal - tiger Plant - rose bush Fungi - mushroom Protist - kelp Monera - bacteria (E. coli)
What is binomial nomenclature?
The naming system for all living organisms. It is Latin and uses the Genus and species name to give an organism a scientific name.
AKA binomial naming
What is an endoskeleton? What does ‘endo’ mean?
A skeleton inside the body
‘Endo’ means internal
Given an example of an animal with an exoskeleton.
Crab
What is an exoskeleton? What does ‘exo’ mean?
A skeleton on the outside of the body
‘Exo’ means external
Give an example of an animal with an endoskeleton.
Human
What does endothermic mean?
Animals with a body temperature controlled internally
What does ectothermic mean?
Animals with a body temperature that varies with the temperature of their surroundings eg. lizard
Which organism undergoes photosynthesis?
Plants (and some bacteria)
What does photosynthesis mean?
Photosynthesis is a process in which plants make their own food, using light energy from the sun to convert carbon dioxide and water into glucose.
List 5 arthropods
Lobster Ant Butterfly Scorpion Spider
List 5 molluscs.
Clam Octopus Squid Snail Slug
Include your mnemonic for Kingdom, Phylum, Class, Order, Family, Genus, Species. Is this order from largest to smallest number of organisms or smallest to largest?
King Phillip Comes Over For Good Spaghetti The order is from largest to smallest, with the most organisms being in the Kingdom level and the smallest number of organisms (only one) in the species level.
What makes a ‘strong key’?
Using features that do not change, such as structural features (feathers, three toes, wings, flippers, etc).
What makes a ‘weak key’?
Characteristics that change or vary within the same kind of organism over time (colour, size and shape).
Is it important to make a strong key or a weak key when classifying? Why?
It is important to make a strong key when classifying as it makes the key more accurate and successful in identifying a species or organism. There is no confusion.
