Science 5th grade با پاسخ UNIT 2: The life cycle of flowering plants 2.7 Plant life cycles
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Science 5
- UNIT 1: Investigation plant growth
- 1.1 Seeds
- 1.2 How seeds grow
- 1.3 Investigation germination
- 1.4 What do plants need to grow?
- 1.5 Plants and light
- Check your progress
- UNIT 2: The life cycle of flowering plants
- 2.1 Why plants have flowers
- 2.2 How seeds are spread?
- 2.3 Other ways seeds are spread
- 2.4 The parts of a flower
- 2.5 Pollination
- 2.6 Investigation pollination
- 2.7 Plant life cycles
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- UNIT 3: States of matter
- 3.1 Evaporation
- 3.2 Why evaporation is useful?
- 3.3 Investigating evaporation
- 3.4 Investigating evaporation from a solution
- 3.5 Condensation
- 3.6 The water cycle
- 3.7 Boiling
- 3.8 Melting
- 3.9 Who invented the temperature scale?
- Check your progress
- UNIT 4: The way we see things
- 4.1 Light travels from a source
- 4.2 Mirrors
- 4.3 seeing behind you
- 4.4 Which surfaces reflect light the best?
- 4.5 Light changes direction
- Check your progress
- UNIT 5: Shadows
- 5.1 Light travels in straight lines
- 5.2 Which materials let light through?
- 5.3 Silhouettes and shadow puppets
- 5.4 What affects the size of a shadow?
- 5.5 Investigation shadow lengths
- 5.6 Measuring light intensity
- 5.7 How scientist measured and understood light
- Check your progress
- UNIT 6: Earth's movement
- 6.1 The Sun‚ the Earth and the Moon
- 6.2 Does the Sun move?
- 6.3 The Earth rotates on its axis
- 6.4 Sunrise and sunset
- 6.5 The earth revolves around the sun
- 6.6 Exploring the solar system
- 6.7 Exploring the stars
- Check your progress
- Reference
Words to learn
life cycle
Think about all the changes in a plant's life, from a germinating seed until it develops into a grown plant and forms its own seeds. All these changes are called the plant's life cycle. Some plants die after they have made their seeds. Other plants flower and make seeds every year.
Questions
1- The diagram on the next page shows the stages of a tomato plant's life cycle. Match each of the processes to the stage of life cycle. Write your answers in a table.
Stage of life cycle | Process |
2- These are the stages in the life cycle of a bean plant:
(flower - seedling - bean pod - adult plant - seed)
The stages are in the wrong order. Put them in the right order and draw the life cycle of the bean plant with labels.
3- Why do we make life cycle drawings in a circle?
4- a: Think of a plant that dies after it produces seeds.
b: Think of a plant that flowers and produces seeds every year.
What you have learnt
- The plant starts life as a seed. It germinates and grows into a plant.
- The adult plant produces flowers, which are pollinated and fertilised to produce seeds in a fruit or seedpod.
- The seeds are dispersed and germinate to produce new plants.
Talk about it!
What are annual plants and perennial plants