Classification of Organisms

 

1.2

 Classification of Organisms

 

Classification of organisms
Animals Plants

Invertebrates

Vertebrates

Non-Flowering Plants

Flowering Plants

 

1) ANIMALS

Invertebrates

  • Invertebrates are animals without a backbone

 

Without legs
Without segmented body With segmented body

1. Sponge

2. Corals

1. Earthworm

2. Leech

 

With legs 
Three pairs of legs More than three pairs of legs
  • Ant
  • Butterfly
  • Scorpion
  • Prawn

 

Vertebrates

  • Vertebrates are animals with a backbone

 

Vertebrates
Fish
  • Poikilothermic
  • Breathe through gills
  • Lays eggs
  • Undergo external fertilisation
Amphibians
  • Poikilothermic
  • Young amphibians - breathe through gills
  • Adult amphibians - breathe using lungs and moist skin
  • Undergo external fertilisation
Reptiles
  • Poikilothermic
  • Breathe through lungs
  • Produce eggs with a shell
  • Undergo internal fertilisation
Birds
  • Homeothermic
  • Breathe through lungs
  • Produce eggs with hard shell
  • Undergo internal fertilisation
Mammals
  • Homeothermic
  • Breathe through lungs
  • Give birth and nurse their young
  • Undergo internal fertilisation

 

 

2) PLANTS

Non-Flowering Plants

 

Moss Fern Conifer

* Reproduce by       producing spores

* Non-vascular

* Reproduce by  producing spores

* Vascular

* Reproduce by   bearing cones

* Vascular

 

Flowering Plants

 

Monocotyledons Dicotyledons

A seed that has one cotyledon is called a monocotyledon

A seed with a pair of cotyledons is called a dicotyledon

 

  DIFFERENCES  
One Number of cotyledons Two
Fibrous root Root Tap root
Leaves with parallel veins Leaf Leaves with network-like veins
Most have non-woody system Stem Woody system
Paddy and maize plants Example Tomato plant and durian tree

Classification of Organisms

 

1.2

 Classification of Organisms

 

Classification of organisms
Animals Plants

Invertebrates

Vertebrates

Non-Flowering Plants

Flowering Plants

 

1) ANIMALS

Invertebrates

  • Invertebrates are animals without a backbone

 

Without legs
Without segmented body With segmented body

1. Sponge

2. Corals

1. Earthworm

2. Leech

 

With legs 
Three pairs of legs More than three pairs of legs
  • Ant
  • Butterfly
  • Scorpion
  • Prawn

 

Vertebrates

  • Vertebrates are animals with a backbone

 

Vertebrates
Fish
  • Poikilothermic
  • Breathe through gills
  • Lays eggs
  • Undergo external fertilisation
Amphibians
  • Poikilothermic
  • Young amphibians - breathe through gills
  • Adult amphibians - breathe using lungs and moist skin
  • Undergo external fertilisation
Reptiles
  • Poikilothermic
  • Breathe through lungs
  • Produce eggs with a shell
  • Undergo internal fertilisation
Birds
  • Homeothermic
  • Breathe through lungs
  • Produce eggs with hard shell
  • Undergo internal fertilisation
Mammals
  • Homeothermic
  • Breathe through lungs
  • Give birth and nurse their young
  • Undergo internal fertilisation

 

 

2) PLANTS

Non-Flowering Plants

 

Moss Fern Conifer

* Reproduce by       producing spores

* Non-vascular

* Reproduce by  producing spores

* Vascular

* Reproduce by   bearing cones

* Vascular

 

Flowering Plants

 

Monocotyledons Dicotyledons

A seed that has one cotyledon is called a monocotyledon

A seed with a pair of cotyledons is called a dicotyledon

 

  DIFFERENCES  
One Number of cotyledons Two
Fibrous root Root Tap root
Leaves with parallel veins Leaf Leaves with network-like veins
Most have non-woody system Stem Woody system
Paddy and maize plants Example Tomato plant and durian tree