form 2, chap 03-biodiversity
TRANSCRIPT
Biodiversity
Important Concepts3.1 Variety of Living Things and Their
Classification Quick Refresh
Smart Review
1© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Important Concepts
2
Biodiversitymade up of
Invertebrates
classified into
Non-floweringplants
Algae
Fungi
Moss
Fern
Floweringplants
Monocotyledon
Dicotyledon
classified into
Fish
Vertebrates
Amphibians
Reptiles
Birds
Mammals
classified into
Animals Plantsmade up of
Earthworm
Squid
Octopus
Beetle
examples
© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Chapter3.1
Variety of Living Things and Their Classification
Animals
Invertebrates
Vertebrates
3
Animals can be classified into two groups:
Animals without backbone
Make up the most number of animals on the Earth
Have great variety of shapes and sizes
Some invertebrates have soft bodies with no bones at all. Examples of these invertebrates are earthworms and octopus
Some invertebrates have coating on the outside of their bodies, also known as exoskeletons. Examples of these invertebrates are beetle and lobster
Animals with backbone
All vertebrates are either warm-blooded or cold-blooded
Warm-blooded vertebrates have fixed body temperature
Cold-blooded vertebrates have body temperature that changes to the surrounding temperature
Can be divided into five main groups, which are fish, amphibians,reptiles, birds and mammals
© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Chapter3.1 Variety of Living Things and Their Classification
Class of vertebrate Fish
Characteristics
Characteristic of body
Type of blood
Breathing organ
Type of fertilisation
Method of reproduction
Habitat
Examples of animals
Covered and protected by overlapping scales
Cold-blooded
Gills
External fertilisation
Lay eggs
Water
Sardine, goldfish, eel, clownfish
4© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Chapter3.1 Variety of Living Things and Their Classification
Class of vertebrate Amphibians
Characteristics
Characteristic of body
Type of blood
Breathing organ
Type of fertilisation
Method of reproduction
Habitat
Examples of animals
Covered by moist skin
Cold-blooded
Gills (tadpole stage) Skins and lungs (adult stage)
External fertilisation
Lay eggs (without shell)
Water and land
Frog, toad, salamander
5© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Chapter3.1 Variety of Living Things and Their Classification
Class of vertebrate
Characteristics
Characteristic of body
Type of blood
Breathing organ
Type of fertilisation
Method of reproduction
Habitat
Examples of animals
Covered with dry scales
Cold-blooded
Lungs
Internal fertilisation
Lay eggs (with shell)
Reptiles
Water and land
Crocodile, turtle, snake
6© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Chapter3.1 Variety of Living Things and Their Classification
Class of vertebrate Birds
Characteristics
Characteristic of body
Type of blood
Breathing organ
Type of fertilisation
Method of reproduction
Habitat
Examples of animals
Covered with feathers Have beak Have a pair of wings Have a pair of legs covered with dry scales
Warm-blooded
Lungs
Internal fertilisation
Sparrow, swan, chicken, pigeon
Lay eggs (with shell)
Land
7© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Chapter3.1 Variety of Living Things and Their Classification
Class of vertebrate Mammals
Characteristics
Characteristic of body
Type of blood
Breathing organ
Type of fertilisation
Method of reproduction
Habitat
Examples of animals Lion, deer, elephant, whale
Covered with fur or hair Have a pair of external ears Have sweat gland Have mammary gland (produce milk for the young)
Warm-blooded
Lungs
Internal fertilisation
Give birth to young
Land
8© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Characteristics Monocotyledon Dicotyledon
Chapter3.1 Variety of Living Things and Their Classification
Plant
Flowering plants
Leaf Leaves with parallelveins
Leaves with networkveins
Number of Cotyledon One Two
Type of stem Soft stem Woody stem
Type of root Fibrous roots system Tap roots system
Examples Maize plant Rambutan tree
Non-flowering plants
9
Plants can be classified into two groups:
produce flower, fruit and seed. They reproduce by seeds
can be classified into monocotyledon and dicotyledon
do not produce flower, fruit and seed. They reproduce by spores orbinary fission
can be classified into algae, fungi, moss and fern
© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Chapter3.1 Variety of Living Things and Their Classification
Non-flowering plant Algae
Characteristics
Type of stem, leaf and root
Chlorophyll
Nutrition
Reproduction
Habitat
Examples of plant
Do not have leaves, stem and root
Present
Makes its own food (carries out photosynthesis)
Binary fission
Water
Chlamydomonas, spirogyra, seaweed
10© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Chapter3.1 Variety of Living Things and Their Classification
Non-flowering plant Fungi
Characteristics
Type of stem, leaf and root
Chlorophyll
Nutrition
Reproduction
Habitat
Examples of plant
Do not have leaves, stem and root
Absent
Gets food from living or dead organisms(live as parasite)
Produces spores (yeast reproduce by budding)
Damp places
Mold, yeast, mushroom
11© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Chapter3.1 Variety of Living Things and Their Classification
Non-flowering plant Moss
Characteristics
Type of stem, leaf and root
Chlorophyll
Nutrition
Reproduction
Habitat
Examples of plant
Have leaves and stem Do not have root
Present
Make its own food (carries out photosynthesis)
Produces spores
Damp places
Moss
© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
12
Chapter3.1 Variety of Living Things and Their Classification
Non-flowering plant Fern
Characteristics
Type of stem, leaf and root
Chlorophyll
Nutrition
Reproduction
Habitat
Examples of plant
Have leaves, stem and root
Present
Makes its own food (carries out photosynthesis)
Produce spores
Damp places
Ferns
13© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Living organisms can be classified into animals and plants Habitat is the place that living organisms lives, seeks food and reproduce Animals are divided into two group, which is vertebrate and invertebrate Most of the animals on earth are invertebrates Vertebrates is the animals with backbones. These includes fish,
amphibians, reptiles, birds and mammals Invertebrates is the animals without backbones Plants are divided into two groups, which are flowering plants and
non-flowering plants Flowering plants can be classified into monocotyledon and dicotyledon Non-flowering plants can be classified into algae, fungi, moss and fern
Q.R.3.1 Quick Refresh
14© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity
Smart Review
A living thing also known as an organism Living organisms exist in various shapes, sizes and habitats Variations is the differences that exist between the same species of
living organism Some mammals have unusual characteristics than other mammals,
such as(a) Whales and dolphins (live in water like fish)(b) Bats (have wings and fly like birds)(c) Anteaters (body covered with dry scales like reptiles, lay eggs)
Insects constitutes the largest number among animals
15© Amazing Tunas Enterprise (001573407-U)TRG – Science Form 2
Chapter 3 : Biodiversity