1 00:00:05,099 --> 00:00:12,019 Hi everyone, so in the last two videos we practiced the classification of plants 2 00:00:12,019 --> 00:00:17,820 and then in the second video we practiced the plants reproduction and 3 00:00:17,820 --> 00:00:25,699 then in this video we're going to practice how do plants or do plants need 4 00:00:25,699 --> 00:00:34,579 food and we're going to see also how water, sunlight, carbon dioxide, 5 00:00:35,100 --> 00:00:46,340 and oxygen help plants in making food their food so let's start with the idea 6 00:00:46,340 --> 00:01:02,920 of photosynthesis plants need energy they make their energy through the 7 00:01:02,920 --> 00:01:21,959 synthesis mirrored photo synthesis plants need energy they make their 8 00:01:21,959 --> 00:01:38,670 energy through the photo synthesis so let's do that math how do photosynthesis 9 00:01:38,670 --> 00:01:57,709 take place. So photosynthesis equals minerals plus water plus sunlight plus 10 00:01:57,709 --> 00:02:19,389 carbon dioxide equals energy and oxygen so minerals plus water plus sunlight 11 00:02:19,389 --> 00:02:31,889 plus carbon dioxide it calls energy which are the fruits and oxygen 12 00:02:31,889 --> 00:02:55,150 Mirror word photosynthesis equals minerals plus water plus sunlight plus 13 00:02:55,150 --> 00:03:09,939 carbon dioxide equals energy plus oxygen 14 00:03:13,180 --> 00:03:27,159 so photosynthesis equals minerals plus water plus sunlight plus carbon dioxide 15 00:03:27,159 --> 00:03:45,979 equals energy plus or N, oxygen. So why are plants important for us humans? Plants 16 00:03:45,979 --> 00:04:03,740 need carbon dioxide and release oxygen. For us humans, humans need oxygen and 17 00:04:03,740 --> 00:04:17,500 release carbon dioxide. So plants release oxygen and need carbon dioxide. For 18 00:04:17,500 --> 00:04:31,769 humans we need oxygen and release carbon dioxide. Mirror word. Why are plants 19 00:04:31,769 --> 00:04:52,170 important for humans. Plants need carbon dioxide and release oxygen. Humans need 20 00:04:52,170 --> 00:05:08,310 oxygen and release carbon dioxide so in your notebook I think you wrote this one 21 00:05:08,310 --> 00:05:14,189 photosynthesis and you also draw this one and we're going to practice this 22 00:05:14,189 --> 00:05:22,889 later so number one is water and then minerals the number three carbon 23 00:05:22,889 --> 00:05:34,610 dioxide number four sunlight number five stem and leaves and number six oxygen 24 00:05:34,610 --> 00:05:38,810 okay we're going to talk about them in the next slides 25 00:05:38,810 --> 00:05:56,639 Number one, the roots absorb water from the soil. Number two, the roots absorb 26 00:05:56,639 --> 00:06:11,560 minerals from the soil number three the leaves absorb carbon dioxide from the 27 00:06:11,560 --> 00:06:27,660 air number four the leaves absorb sunlight number five water and minerals 28 00:06:27,660 --> 00:06:41,000 pass through the stem and leaves stem to the leaves and number six plants make 29 00:06:41,000 --> 00:07:01,160 energy and release oxygen mirror word the roots absorb water from the soil 30 00:07:01,160 --> 00:07:18,259 Number two, the roots absorb minerals from the soil. The leaves absorb carbon 31 00:07:18,259 --> 00:07:35,319 dioxide from the air. Number four, the leaves absorb sunlight. Number five, water 32 00:07:35,319 --> 00:07:56,560 and minerals pass through the stem to the leaves and number six plants make energy and release 33 00:07:56,560 --> 00:08:23,519 oxygen respiration plants need oxygen to breathe so this happens during daytime and nighttime but 34 00:08:23,519 --> 00:08:40,870 let's see the difference. Mirror word. Plants need oxygen to breathe. This 35 00:08:40,870 --> 00:08:53,309 happens during daytime and nighttime. Mirror word. Respiration. Plants need 36 00:08:53,309 --> 00:09:10,600 oxygen to breathe this happens during daytime and nighttime so let's see the 37 00:09:10,600 --> 00:09:37,000 difference during daytime photosynthesis plants produce oxygen they release the oxygen that they 38 00:09:37,000 --> 00:09:59,200 do not need during nighttime there is no Sun plants do not produce oxygen they 39 00:09:59,200 --> 00:10:25,940 take it from the air. Mirror word. Daytime. Photosynthesis. Plants produce oxygen. They 40 00:10:25,940 --> 00:10:48,000 release the oxygen that they do not need. Nighttime there is no Sun. Plants do not 41 00:10:48,000 --> 00:11:07,970 produce oxygen they take it from the air so remember we need plants and plants 42 00:11:07,970 --> 00:11:16,529 need us thank you for practicing with me bye-bye see you