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GRADE 7 NATURAL SCIENCES
TERM ONE: LIFE AND LIVING
CONTENTS
TOPIC 1 – THE BIOSPHERE
GM 2018
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Contents
Where are living things found? ...................................................................................... 5
Identifying areas where life is found .............................................................................. 6
Activity 1 ............................................................................................................ 6
The Biosphere ....................................................................................................... 6
Life in the Biosphere............................................................................................... 7
Lithosphere ....................................................................................................... 7
Hydrosphere ...................................................................................................... 8
Atmosphere ....................................................................................................... 8
Activity 2 ............................................................................................................ 8
The Seven Life Processes ......................................................................................... 9
Activity 3: Experiment............................................................................................. 9
Requirements for life ............................................................................................. 11
Topic 2: Biodiversity ................................................................................................. 12
Activity 4 ........................................................................................................... 14
MNEMONIC – TO REMEMBER THE CLASSIFICATION LEVELS ................................................... 15
Differences between plants and animals ...................................................................... 16
Activity 5(a) ........................................................................................................ 16
Classification ....................................................................................................... 16
Classification of vertebrates and invertebrates .............................................................. 17
Vertebrates ...................................................................................................... 17
Invertebrates .................................................................................................... 17
Vertebrates - Classification ................................................................................... 17
Refresher: Activity 5(b) .......................................................................................... 17
Fish (Osteichthyes – pronounced as os-tay-yek-thies) .................................................... 18
Amphibians ...................................................................................................... 18
Reptiles .......................................................................................................... 18
Birds .............................................................................................................. 18
Mammals ......................................................................................................... 19
Activity 6 ........................................................................................................... 19
GM 2018
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Invertebrates....................................................................................................... 20
Arthropods.......................................................................................................... 20
Insects............................................................................................................... 20
Arachnids – ......................................................................................................... 21
Crustaceans ........................................................................................................ 21
Molluscs – ........................................................................................................... 22
Activity 7 ........................................................................................................... 23
Diversity of Plants ................................................................................................. 24
Gymnosperms ...................................................................................................... 25
Angiosperms (angi – enclosed, sperma – seed) ............................................................... 25
Monocotyledons.................................................................................................... 26
Dicotyledons ....................................................................................................... 27
Activity 8: Test yourself .......................................................................................... 28
Topic 3: Plant and human reproduction .......................................................................... 29
Sexual reproduction in Angiosperms ........................................................................... 29
Seeds and flowers .............................................................................................. 29
Components of a flower ....................................................................................... 29
Activity 9: Identify the parts and functions of a flower .................................................... 30
Pollination ....................................................................................................... 30
Activity 10 .......................................................................................................... 31
Fertilisation and fruit/seed dispersal ....................................................................... 32
Fruit and seed dispersal ....................................................................................... 33
Activity 11 .......................................................................................................... 34
Sexual reproduction in humans ................................................................................. 35
Activity 12 .......................................................................................................... 36
Reproductive Organs .............................................................................................. 37
The male reproductive organ ................................................................................. 37
The female reproductive organ .............................................................................. 37
Activity 13 .......................................................................................................... 38
Fertilisation, pregnancy and menstruation ................................................................. 38
Fertilisation and pregnancy ................................................................................... 38
GM 2018
GRADE 7 NATURAL SCIENCES
TERM ONE: LIFE AND LIVING
CONTENTS
TOPIC 1 – THE BIOSPHERE
GM 2018
, 2
Contents
Where are living things found? ...................................................................................... 5
Identifying areas where life is found .............................................................................. 6
Activity 1 ............................................................................................................ 6
The Biosphere ....................................................................................................... 6
Life in the Biosphere............................................................................................... 7
Lithosphere ....................................................................................................... 7
Hydrosphere ...................................................................................................... 8
Atmosphere ....................................................................................................... 8
Activity 2 ............................................................................................................ 8
The Seven Life Processes ......................................................................................... 9
Activity 3: Experiment............................................................................................. 9
Requirements for life ............................................................................................. 11
Topic 2: Biodiversity ................................................................................................. 12
Activity 4 ........................................................................................................... 14
MNEMONIC – TO REMEMBER THE CLASSIFICATION LEVELS ................................................... 15
Differences between plants and animals ...................................................................... 16
Activity 5(a) ........................................................................................................ 16
Classification ....................................................................................................... 16
Classification of vertebrates and invertebrates .............................................................. 17
Vertebrates ...................................................................................................... 17
Invertebrates .................................................................................................... 17
Vertebrates - Classification ................................................................................... 17
Refresher: Activity 5(b) .......................................................................................... 17
Fish (Osteichthyes – pronounced as os-tay-yek-thies) .................................................... 18
Amphibians ...................................................................................................... 18
Reptiles .......................................................................................................... 18
Birds .............................................................................................................. 18
Mammals ......................................................................................................... 19
Activity 6 ........................................................................................................... 19
GM 2018
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Invertebrates....................................................................................................... 20
Arthropods.......................................................................................................... 20
Insects............................................................................................................... 20
Arachnids – ......................................................................................................... 21
Crustaceans ........................................................................................................ 21
Molluscs – ........................................................................................................... 22
Activity 7 ........................................................................................................... 23
Diversity of Plants ................................................................................................. 24
Gymnosperms ...................................................................................................... 25
Angiosperms (angi – enclosed, sperma – seed) ............................................................... 25
Monocotyledons.................................................................................................... 26
Dicotyledons ....................................................................................................... 27
Activity 8: Test yourself .......................................................................................... 28
Topic 3: Plant and human reproduction .......................................................................... 29
Sexual reproduction in Angiosperms ........................................................................... 29
Seeds and flowers .............................................................................................. 29
Components of a flower ....................................................................................... 29
Activity 9: Identify the parts and functions of a flower .................................................... 30
Pollination ....................................................................................................... 30
Activity 10 .......................................................................................................... 31
Fertilisation and fruit/seed dispersal ....................................................................... 32
Fruit and seed dispersal ....................................................................................... 33
Activity 11 .......................................................................................................... 34
Sexual reproduction in humans ................................................................................. 35
Activity 12 .......................................................................................................... 36
Reproductive Organs .............................................................................................. 37
The male reproductive organ ................................................................................. 37
The female reproductive organ .............................................................................. 37
Activity 13 .......................................................................................................... 38
Fertilisation, pregnancy and menstruation ................................................................. 38
Fertilisation and pregnancy ................................................................................... 38
GM 2018
