PLANTS INTERACTION AND REPRODUCTION
m.iluminada.marquez
Created on May 10, 2020
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Transcript
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PLANTS
Interaction and Reproduction
WE KNOW SOME PLANTS REACT TO LIGHT BY GROWING TOWARDS IT. hOWEVER, PLANTS CAN INTERACT WITH THEIR ENVIRONMENT IN MANY OTHER WAYS TOO.
Plants Interaction
- They react to water and they adapt to the wet conditions in order to survive.
- They react to touch. Carnivorous plants can catch insects. Climbing plants look for obstacles to expand and grow.
- They react to temperature and seasons.
- They protect themselves from other living things.
- Some of them use their colourful flowers for reproduction.
Plants Reproduction
Plants can reproduce beacuse they are living things. Most flowering plants use sexual reproduction. The flower of a plant has male and female organs.
Plants Sexual Reproduction
PARTS OF A FLOWER
The male organs are called stamens. Each stamen has two parts: a long, thin filament and an anther at the end. The anther is where the plant produces pollen. Pollen is the male reproductive cell.The female organ is in the centre of the flower and is called the pistil. The pistil has four parts: the ovary, the female reproductive cell, which are called ovules, and a long tube called the style, which connects the ovary to the stigma, and the stigma, which is sticky and catches the pollen.
Sexual Reproduction
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POLLINATION
In many flowering plants, pollen from the stamen of one plant has to travel to the stigma of another plant. This process is called pollination. The pollen then travels down the style and into the ovary. When the pollen and an ovule hoin toguether, they make a seed. This process is called fertilisation.
Sexual Reproduction
Plants Reproduction
Asexual Reproduction
reproduction by spores
Ferns and mosses are examples of non-flowering plants. They don't produce seeds. They reproduce using spores. A spore is a cell and it grows inside a spore case.
Asexual Reproduction
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Asexual Reproduction
- There are some plants which grow special stems above the ground. These stems are called Stolons. When the stolons touch the ground, they grow roots and become a new plant. A strawbery plant uses stolons to reproduce.
- Other plants grow special stems under the ground called rhizomes. The rhizomes grow into new plants with roots and leaves.
- Tubers are like rhizomes that serve as a food reserve for the plant.
Activities
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