We know that animals need sense organs, a nervous system and a locomotor system to interact with their environment.

But, plants do not have sense organs, nervous systems or locomotor systems. So, how can plants interact with their environment?

There are many different ways. Let's see some examples:

  • Plants can interact with animals. How? Plants produce oxygen and need carbon dioxide; while animals produce carbon dioxide and need oxygen. Isn't it a good relationship?

Interaction - Humans and Plants.jpg
  • Plants turn their leaves towards the light (for example, the sunflowers).


Sunflower.jpg
SUNFLOWERS MOVE SEARCHING THE SUNLIGHT


  • Some insects can damage trees. How can trees eliminate those harmful insects? Using animals: birds and other animals live inside trees. They eat the harmful insects, so the tree can be healthy and free of illnesses.

  • Animals help plants with the dispersal of their seeds in two ways:


1 - When an animal eats a fruit, the seeds that are inside the fruit are usually not digested by the animal (they have a hard shell protecting them); so when the animal eliminates the food waste, it also eliminates the seeds. If the conditions are good (wet soil and warm temperature), new plants will reproduce from those seeds.

2 - Some seeds have hooks that helps them to attach to the animals' fur (or even humans' clothes), so the seeds can travel long distances.



Time for the videos.

On the first video, you could watch how sunflowers move searching the sunlight.




On the second video, you could watch how animals help plants dispersing their seeds.





Go to the games section to check what to have learnt.