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PLANTS. PARTS OF A PLANT ROOTSSTEM LEAVES (LEAF)

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Presentation on theme: "PLANTS. PARTS OF A PLANT ROOTSSTEM LEAVES (LEAF)"— Presentation transcript:

1 PLANTS

2 PARTS OF A PLANT ROOTSSTEM LEAVES (LEAF)

3 ROOTS The roots of a plant hold it in the ground and a plant gets the water and mineral salts it needs through them.

4 STEM The stem grows above the ground. It can be woody or non-woody.

5 STEM Woody stems. They are hard. There are two types Shrubs. They have a thin stem and their branches come from the ground. For example: rose bush and rosemary. Trees. They have a thick and strong stems (trunks). The oak tree and polar tree are big trees.

6 STEM Non-woody stems. They are soft and flexible. For example wheat and mint.

7 LEAVES - They are the green part of a plant that grow from the stem or branches. - They are the places where plants make their own food. TWO OR MORE ARE LEAVES ONE IS LEAF

8 LEAVES - Some trees lose their leaves in autumn. These are deciduous trees. - Others do not lose all their leaves. These are evergreen trees.

9 NUTRITION OF PLANTS - First, they absorb water and mineral salts from the soil through their roots. This is called xylem sap. - The xylem sap moves through the stem and branches until it reaches the leaves. - In the leaves, the xylem sap turns into food thanks to substances the plant gets from the air and sunlight. We call this food phloem sap. When they produce more food than they need, they store it in their roots, trunk or leaves.

10 REPRODUCTION OF PLANTS

11 FLOWERS Calyx. It´s a group of small green leaves. These leaves are sepals. The calyx protects the flower.

12 FLOWERS Corolla. It´s a group of coloured leaves. These leaves are petals.

13 FLOWERS Stamens. These are the male reproductive organs. They are long and have round ends. These round ends have pollen.

14 FLOWERS Pistil. It is the female reproductive organ. It has the shape of a bottle. It´s got ovules inside.

15 FRUIT AND SEEDS When pollen grains enter the pistil, the flower starts to change. It loses its petals and the pistil becomes a fruit. There are seeds inside the fruit. A new plant can be born from each seed. When pollen grains enter the pistil, the flower starts to change. It loses its petals and the pistil becomes a fruit. There are seeds inside the fruit. A new plant can be born from each seed.

16 A PLANT IS BORN When a seed falls to the ground and finds enough water and the correct temperature, a new plant is born. This is called germination. When a seed falls to the ground and finds enough water and the correct temperature, a new plant is born. This is called germination. When a plant germinates, first the roots grow down into the ground and a small stem with one or two leaves grows above the ground. Little by little, more leaves grow until the plant is an adult. When a plant germinates, first the roots grow down into the ground and a small stem with one or two leaves grows above the ground. Little by little, more leaves grow until the plant is an adult. Some plants, like geraniums or potatoes, can grow from cuttings. These are small pieces of stem or root. Some plants, like geraniums or potatoes, can grow from cuttings. These are small pieces of stem or root.


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