1. Natural Sciences and Technology Grade 5
Term 1: Life and Living
Life Cycles
(PPT 1)

2. Growth and development
Topic 5 Life Cycles
Growth and development
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

3. What is a life cycle?
This is the process that an animal or plant moves through from the moment that it is created until the time that it dies.
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

4. Different ways of growing
There are many different types of animals and plants on our planet.
They have different life cycles – think about how the life of a frog or chicken starts and how a cat’s life begins?
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

5. With fruit plants the seed first grows into a fruit.
Plant life cycle
The flowers produce pollen and unfertilized seeds (these can't yet grow new plants).
Insects, birds or other animals carry the pollen from one flower to the next - this is called pollination.
The pollen fertilizes the ovules in the flower.
The fertilized ovules now develop into seeds.
With fruit plants the seed first grows into a fruit.
The seeds are then dispersed and start to grow in a new place.
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

6. Plant life cycle
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

7. Fruit and flowering plants
Flowers and fruit plants have slightly different life cycles.
Both involve flowers, but with a fruit the flower dies and as the seed grows into the fruit – so fruit trees have extra bits to their cycle.
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

8. Flower life cycle
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

9. Life cycle of tomato plant
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

10. Important words in the Plant Life Cycle
Germination
With water, light and the right temperature the plant sprouts roots and a stem and grows.
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

11. Important words in the Plant Life Cycle
Growth
The plants stem and leaves grow upwards towards the sunlight
The leaves unfold and the roots grow down into the ground.
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

12. Important words in the Plant Life Cycle
Pollination
Insects attracted to the plant transport the pollen to other plants
Sometimes birds transport the pollen or animals.
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

13. Important words in the Plant Life Cycle
Fertilisation
This is when the pollen and the ovule join together in the inside of a flower to make a seed and create life.
Gr 5 Natural Sciences and Technology – Term 1, Topic 5

14. Important words in the Plant Life Cycle
Seed Dispersal
This is when seeds are spread by birds or other animals and the plant cycle starts all over again.
Gr 5 Natural Sciences and Technology – Term 1, Topic 5