00:00Hello friends, welcome to a new happy learning video.
00:12Have you ever wondered how plants feed?
00:16To answer this question, we need to understand...
00:24Photosynthesis
00:27Photosynthesis is a process in which plants make their own food to be able to grow and develop.
00:35In order to perform photosynthesis, they need various elements.
00:40Sunlight, carbon dioxide obtained from air and water,
00:46and chlorophyll, which is a green substance that all plants have,
00:52and is fundamental for performing photosynthesis, since it could not happen without it.
01:00By the way, chlorophyll is what gives all plants the green colour.
01:05But how does photosynthesis take place?
01:11Look at this plant!
01:13As you can see, its roots are anchored to the ground.
01:17And through them, the plant absorbs water and minerals in the soil.
01:24Water with minerals are transported up the stem, reaching the leaves.
01:30The leaves are full of tiny pools called stomata, which absorb carbon dioxide that the air in the surrounding contains.
01:40All this containing water, minerals and carbon dioxide is called raw sap.
01:47Now it's chlorophyll's turn!
01:50The chlorophyll in the leaves has all the necessary ingredients for photosynthesis to take place.
01:58And when it receives sunlight, the process begins by transforming the raw sap into elaborated sap,
02:07which also circulates around the plant and works as food.
02:12All plants feed from elaborated sap and they store it in their roots, like a carrot.
02:22Or in their fruit, like an apple or a pear.
02:27Now we know how photosynthesis takes place.
02:31But why is it so important?
02:34Without plants, there would be no life on Earth.
02:40We wouldn't have oxygen to breathe or food to feed on.
02:45You already know that herbivores eat plants and carnivores eat herbivores.
02:51Plants are fundamental for the food chain.
02:56And they are also fundamental for our respiration.
03:01Actually, when humans breathe, we turn oxygen into carbon dioxide.
03:08Quite the opposite of when plants perform photosynthesis.
03:13A curious fact you need to know is that at night,
03:19because plants don't have sunlight to photosynthesize, they breathe like humans do.
03:26They take in oxygen and release carbon dioxide.
03:30Remember that!
03:32And one last thing, so you understand the importance of photosynthesis.
03:39When plants absorb dirty and contaminated gases,
03:43they transform them into pure air, into oxygen.
03:48And this way, they clean the atmosphere and all nature.
03:53Plants are the best solution to fight against contamination, don't you think?
03:59Goodbye friends!
04:00And don't forget to subscribe to Happy Learning TV!
