unit 2 natural sciences

15
natural

Upload: scienceshbs

Post on 07-Jul-2015

253 views

Category:

Education


2 download

DESCRIPTION

The classification of living things

TRANSCRIPT

Page 1: Unit 2 Natural Sciences

natural

Page 2: Unit 2 Natural Sciences

How are living things classified?

The Animal kingdom can be divided into vertebrates and invertebrates. Fish,

birds, reptiles, amphibians and mammals are all vertebrates. Worms and snails

are invertebrates: they don’t have a spinal column.

Groups of living things with similar cells are called kingdoms. There are five

kingdoms: Animal, Plant, Monera, Fungi and Protista.

Page 3: Unit 2 Natural Sciences

What are the characteristics of mammals?

All mammals have lungs to breathe. Mammals have skin and hair. Most

mammals have four legs. Almost all mammals are viviparous.

Page 4: Unit 2 Natural Sciences

What are the characteristics of reptiles?

Reptiles have hard scales. Reptiles have lungs to breathe. Many reptiles have

four legs, but snakes don’t have legs. Reptiles are oviparous.

Page 5: Unit 2 Natural Sciences

What are the characteristics of fish?

Fish breathe with their gills. They have a long body covered with

scales. Fish have fins and tails. Almost all fish are oviparous.

Page 6: Unit 2 Natural Sciences

What are the characteristics of birds?

Birds have lungs and four extremities: two wings and two legs. Birds have

aerodynamic bodies. Birds are oviparous.

Page 7: Unit 2 Natural Sciences

What are the characteristics of amphibians?

Amphibians have thin, smooth skin and they have four legs. When they’re

young, they have gills to breathe. When they become adults, they grow lungs

to breathe. Amphibians are oviparous.

Page 8: Unit 2 Natural Sciences

How do we classify invertebrate animals?

Invertebrate animals are classified into six groups: arthropods,

molluscs, porifera, coelenterates, echinoderms and annelids.

Page 9: Unit 2 Natural Sciences

What different types of body coverings do

invertebrates have?

Hard shell Exoskeleton No protective body

covering

Page 10: Unit 2 Natural Sciences

How can we classify seed plants?

Angiosperms Gymnosperms

Angiosperms produce flowers. Gymnosperms produce cones.

Page 11: Unit 2 Natural Sciences

How can we classify non-seed plants?

Ferns Mosses

Non-seed plants produce spores.

Page 12: Unit 2 Natural Sciences

What are the Monera, Fungi and Protista

kingdoms like?

Many multicellular

fungi consist of a cap, a

stem and a network of

hyphae. These are long

tubular structures.

Monerans are simple

unicellular organisms.

They don’t have

bodies.

Protists can be

unicellular or

multicellular.

Page 13: Unit 2 Natural Sciences

What have we learnt?

Plant Monera Fungi Protista

There are five kingdoms ...

Animal

Page 14: Unit 2 Natural Sciences

What have we learnt?

reptiles fish amphibians birds

Vertebrates can be classified into...

mammals

Page 15: Unit 2 Natural Sciences

What have we learnt?

molluscs echinoderms coelenterates porifera

Invertebrates can be classifed into...

arthropods annelids