Ch. 3.2 Flashcards
[Scientists observe the _______ _____________ in living things and put the living things with similar ______________ _______________ into the same group]
[Key features] X2
Classification
Steps to classification:
1. Observe the ________ ____________ in living things
!!!_____________ features to classify the differences=
key
2. Put living things with similar _______ __________ in the same group
3. Give the group a ____________
Key features, external, key features, name
classification helps us _____________________________________________________________________.
Identify and study living things systematically
Scientists make a ______ based on the key features of living things
A ______ can be used to identify living things that _________________________, or to _____________________________________________.
Key, key, we do not know, distinguish between living things that are similar
We use a _______ to identify living things based on their key features.
Key
How scientists categorise living things: 1. 2. 3. 4. 5. 6. 7. (Hint: 6+7=scientific name)
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
The system of naming living things was developed by the _______________ scientist __________________________________ (_______-_______)
Swedish, Cal Linnaeus, 1707, 1778
Scientists classify all animals into two main groups based on whether or not they have a _______________:
- _________________ (with)
- _________________ (without)
Backbone
Vertebrate
Invertebrate
Our backbone supports our body from the _______________. Multiple sections of backbone helps us ____________________________.
Inside, bend easily
Name four living things with backbones: 1. 2. 3. 4.
Fish, snake, goose, human
Name four living things without backbones: 1. 2. 3. 4.
Jellyfish, earthworm, snail, butterfly
Scientists further classify vertebrates into five groups: 1. 2. 3. 4. 5.
Fish, amphibians, reptiles, birds, mammals
Six special feature of fish:
~live in _____________
~have __________ ___________
~have __________ for _____________ ___________ _____________
~have __________ for _____________
~body temperature changes/ doesn’t change with the surroundings
~lay _____________ _______ ___________
Water, slimy scales, gills for breathing in water, fins for swimming, changes, eggs in water
Six special features for amphibians:
~can live in ____________ _____________ and on __________
~have _____________ _____________ but no _______________
~young have __________ for breathing in __________
~adults breathe through _____________ and ____________
~body temperature changes/ doesn’t change with surroundings
~lay ___________ in ______________ __________
Fresh water and on land, moist skin but no scales, gills for breathing in water, lungs and skin, changes, eggs in fresh water
Four special features for reptiles:
~have ________ _________ ____________
~have ____________ for ______________
~body temperature changes/ doesn’t change with surroundings
~lay _____________ ___________ on _____________
Hard dry scales, lungs for breathing, changes, shelled eggs on land
Six special features of birds:
~have ______________
~have ______________ for ______________
~have ______________ for ______________
~have ______________
~body temperature changes/ doesn’t change with surroundings
~lay _________________ _______ on ____________
Feathers, lungs for breathing, beak for feeding, wings, doesn’t change, shelled eggs on land
Five special features of mammals:
~have __________
~have __________ for ______________
~have ______________ ______________ that ______________ ____________ for ______________ ________ _____________
~body temperature changes/ doesn’t change with surroundings
~do not ______ ________ but ___________ _________ to ____________ _______________
Hair, lungs for breathing, mammary glands that produces milk for feeding the young, doesn’t change, lay eggs, give birth, live young
Scientists have identified more than __________________ kinds of plants on Earth. They also ____________ plants into groups based on their ________ _______________.
320000, classify, key features
All plants can be classified into ______________ _________ and ____________________ ___________, based on whether or not they have _________________ ___________.
Vascular plants and non-vascular plants, vascular tissues
Vascular plants have ______________ __________ for ____________________ _______________, ________________ and _________________ through their _____________, ___________ and _________________.
Vascular tissues, water, nutrients and minerals, roots, stems and leaves
Vascular plants can grow __________________ than non-vascular plants.
Faster
Non-vascular plants don’t have ____________ __________. They are ________ plants that usually grow in ____________ places. They do not have ____________ to absorb water, but absorb water directly through their ____________ ____________________. A common example is ___________.
Vascular tissues,small, damp, roots, body surface, moss
Vascular plants can be further classified into __________ _____________ and ____________ ______________, based on whether or not they produce _____________.
Seed plants, seedless plants, seeds
Seed plants produce ____[a]_____ for ________________. [a] are usually protected inside a ____________.
Seeds, reproduction, fruit
