Wednesday, 7 November 2018

Plant Kingdom: nutrition, interaction and reproduction. The classification of plants



Plant kingdom

Plants are multicellular organisms with eukaryotic cells. Unlike animals, plants cannot move. Their cells have a cell wall and chloroplasts, which contain a green pigment called chlorophyll, which is involved in photosynthesis.

As all living things, plants carry out the three basic life processes:
 - Nutrition: plants can make their own food through a process called photosynthesis, in which plants use the light from the Sun.

 - Interaction: plants cannot move but they interact with the world around them by growing towards light and water and by opening and closing their leaves and petals.

 - Reproduction: some plants reproduce by spores and others reproduce by seeds


Watch this video to learn more about Nutrition in plants: the process of Photosynthesis


According to the way they reproduce, we can classify plants into Non-seed plants (mosses and ferns) and seed plants (gymnosperms and angiosperms)

1. Non-seed plants: they reproduce by producing cells called spores that grow into a new plant.

Resultado de imagen de moss on rock
Mosses
Imagen relacionada
Ferns

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2. Seed plants: they reproduce by producing seeds that grow into a new plant.

A) Gymnosperms: they do not produce flowers or fruits, the seeds are grouped  in cones. 

Resultado de imagen de angiospermsResultado de imagen de pine tree with cone ghj






B) Angiosperms: they produce flowers and fruits which contain the seeds.


Examples of Angiosperms
Resultado de imagen de angiosperms flower  Resultado de imagen de angiosperms flower
      Seeds in flower and fruit.                      Parts of a flower



Here you have a video to understand the differences between gymnosperms and angiosperms better



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