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STEM - Part of a plant that grows above the ground.
- It conducts water and minerals from the roots to the leaves.
- It transports food (made in the leaves), from the leaves to the rest of the plant.
- It supports leaves, flowers, fruits… It holds the plant up.
LEAF/ LEAVES - Part of a plant that is usually green and thin.
- Leaves do photosynthesis: they trap energy from sun and carbon dioxide from the air to "make" their food.
- They release oxygen into the air.
Plants create their own food by using a process called photosynthesis.
The process of photosynthesis is:
When light from the sun hits a leaf of a plant, carbon dioxide also enters the plant. The roots of the plant then absorbs water from the soil. When the progress is done, the plant also produces oxygen.
ROOT - Part of a plant that grows under the ground.
- It absorbs water and minerals from the soil.
- It hold the plant in the ground.
Taproot: there is a primary root with secondary or lateral roots.
Fibrous root: there is not primary root. All the roots have the same size.
FLOWER - It is he reproductive part of a flowering plant. It can be unisexual (male or female) or hermaphrodite.
- When it is fertilised by pollen grains, the flower produces seeds. The seeds will grow into a new plant.
With typical flowers
With seeds and flowers
With flowers called cones
Carnivorous plants do photosynthesis and also have different ways to get some nutrients.
With true roots, stems and leaves
Without
seeds nor flowers
With false roots, stems and leaves
Plants are autotrophic and photosynthetic : they make their own food from simple substances using the sun energy. This process is called photosynthesis.
Plants live attached to the soil and they cannot move.
They can respond in many different ways. They respond to stimulus, such us touch, sunlight, water... These are just a few examples:
Plants produce:
- Oxygen.
- Their own food
(glucose, sugar).
Plants need:
- Carbon dioxide.
- Water.
- Sun energy.
Through seeds
Sexual reproduction: it requires a male organism and a female organism. In plants, seeds are ovules fertilized by pollen.
Through spores
Plants reproduction
Through fragments
Spores on the back of fern leaves
Only one organism is needed. The result is an identical copy.
Plant cells are different than animal cells:
Chloroplasts
Cell Wall
Plants are diverse in:
Most plants create their own food using a process called photosynthesis, but other plants that are carnivorous like the Venus Flytrap have their own ways of catching insects.
Plants are many different sizes and colours. Plants like the Giant Sequoia tree are usually 60- 85m tall and 6- 8m wide. Others, like moss are usuall 1- 10 cm tall.
Plants live in harsh conditions. That's why they have adaptations to help them survive.
The Plants Kingdom is one of the largest kingdom: there are more than 370.000 different species.
Plants are very often used as medicine.
These are a few examples of healing plants: