biodiversity( folio)
TRANSCRIPT
BiodiversityWhat is biodiversity?
Biodiversity is also know as biological diversity
Biodiversity refers to wide variety of organisms on earth
LIVING THINGS
ANIMALS PLANTS
BiodiversityObserve the biodiversity in this rainforest
Classification of Animals
Vertebrates Invertebrates
Animals
Animal with backbonesAnimal without backbones
There are two main groups of animals:
Invertebrates
With jointed legs Without jointed legs
3 pairs of leg 4 pairs of legs
More than 4 pairs of legs
Segmented body
Non-segmentedbody
CLASSIFICATION OF INVETEBRATES
Invertebrates• More than 90% of animals are invertebrates• Since invertebrates have no backbone, they are usually small in size.
• Examples: Inserts such as ants, butterflies, flies, and cockroaches Spiders Crabs Prawns Worms Mollusks such as snails
Vertebrates
Amphibians
Fish
Birds
Mammals
Reptiles
Classification of vertebrates
Vertebrates• Smaller group compared to invertebrates. However, we are more familiar with this group of animals
• Since vertebrates have backbone to support their weight, many vertebrates are large in size
Common characteristics of amphibians
• Body covered with moist skin
• Adults can live on land and water
• Adults breathe with lung on land and through moist skin when in water• Cold-blooded (body temperature changes with the surrounding temperature)• Lay eggs covered with jelly-like substance• Young amphibians live in water and breathe through gills• Carry out external fertilization (eggs are fertilized outside the female body)
Toad
Salamander
AMPHIBIANS
Examples : Toad , frog and salamander
Common characteristics of birds
• Body covered with feathers
• Have wings and beak
• Breathe with lungs
• Warm-blooded (body temperature remains constant)
• Lay eggs with hard shells
• Carry out internal fertilization (eggs are fertilized inside the female body)
BIRDS
Examples : Chicken, birds, duck, penguin
Common characteristics of reptiles
• Body covered with hard and dry scales for protection
• Breathe with lungs
• Cold-blooded (body temperature changes with surrounding temperature)• Lay eggs with leathery shells• Carry out internal fertilization (eggs are fertilized inside the female body)
Tortoises
Crocodile
Snake
REPTILES
Examples : snake, crocodile, lizards, tortoises
Common characteristics of fish• Body covered with slimy scales for protection
• Have fins and tail to swim
• Streamlined bodies to swim well
• Breathe through gills
• Cold-blooded (body temperature changes with the surrounding temperature)• Lay eggs• Carry out external fertilization (eggs are fertilized outside the female body)
FISH
Examples : shark, clown fish, pomfret, seahorse
Common characteristics of mammals• Body covered with hair or fur
• Breathe with lungs• Warm-blooded (body temperature remains constant)• Give birth to live young• Carry out internal fertilization (eggs are fertilized inside the female body)• Young mammals feed on milk from their mother’s mammary glands
Camel
RhinocerosTiger
Orangutan
Elephant
MAMMALS
Examples :Tiger, elephant, whale, camel, cats, do
DISCUSSION1.0 What is the difference between vertebrates and invertebrates?2.0 Which type of vertebrate’s breath through lungs?3.0 Which type of vertebrate’s lay eggs?4.0 Which type of vertebrates has cold-blooded?5.0 State three similarities between birds and mammals6.0 A whale is classified as a mammal and not a fish. Give three reasons for this.7.0 Frog can breath both on land and in water. How can frogs do so?
CONCLUSION 1.0 There is a large variety of animals on the Earth. It can be said that there is diversity among animals 2.0 These animals differs from one another in size, shape and appearance 3.0 Invertebrates are animals which do not have back bones and most of them are insect. 4.0 Invertebrates are usually very small because they do not have backbones to support heavy weight. 5.0 Vertebrates are animals with backbones and can
differentiate
Reference 1.0 Text book science form 1 2.0 Science process skills form 1( Longman)
Classification of Plants
Flowering Plants Non-flowering Plants
Plants
Examples Examples
Non-flowering plants• Further divided to conifers, ferns, mosses, and algae
• Conifers
Reproduce by seeds produced in cones Have needle-like leaves
Have stems, roots and needle- like leaves Example: casuarinas, pine
• Ferns Reproduced by spores on the underside of leaves
Have stems, leaves and roots Example: Bird’s nest fern, stag’s horn fern
• Mosses Reproduce by spores produced in capsules
Have simple stems and tiny leaves but no true roots Example: White moss
• Algae
Very simple plants No proper roots, stems, leaves Example: Seaweed
Flowering plants• Produce flower for reproduction• Flower fruits and seeds new plants• Based on the seeds they produce, flowering plants can be further divided into 2 groups
Flowering plants
Monocotyledons Dicotyledons
Have seeds with one cotyledon
Have fibrous roots
Leaves have parallel veins
Non- woody stems
Have seeds with two cotyledon
Have tap roots
Leaves have a network of
veins
Woody stems
FOLIOTHEME
MAN AND THE VARIETY OF LIVING THINGS
CHAPTER 5BIODIRVERSITY
TITLETHE CLASSIFICATION OF ANIMALS
NAME : __________________________
CLASS : __________
IC NUMBER : ______________
YEAR : 2009
CONTENT1. Introduction2. Objective3. Concept map – Classification Of Animals4. Invertebrates 4.1 Definition 4.2 Characteristics Features Of Animal 4.3 Example Of Invertebrates Animals5. Vertebrate 5.1 Definition 5.2 The Main Characteristics of five groups of vertebrates
5.2.1) Mammals 5.2.2) Birds 5.2.3) Reptile 5.2.4) Amphibian 5.2.5) Fish
6. Discussion7. Conclusion8. References