1 00:00:00,000 --> 00:00:07,980 Hello boys, girls, welcome to a new natural science lesson, Unit 4, Plants, Lesson 2, Reproduction. 2 00:00:08,500 --> 00:00:10,960 How do plants reproduce? 3 00:00:13,800 --> 00:00:15,279 Reproduction of plants. 4 00:00:16,699 --> 00:00:19,879 There are two different types of plant reproduction. 5 00:00:19,879 --> 00:00:32,020 On the one hand, sexual reproduction in seed plants, both in angiosperm with flowers and gymnosperms with cones. 6 00:00:32,899 --> 00:00:45,259 On the other hand, we have asexual reproduction in non-seed plants, such as in ferns and mosses, which reproduce through spores. 7 00:00:45,259 --> 00:00:50,259 Remember that all plants reproduce. 8 00:00:50,259 --> 00:00:59,399 Now, let's learn about the different functions of the parts of a flower. 9 00:00:59,399 --> 00:01:05,400 First, the corolla is made out of petals. 10 00:01:05,400 --> 00:01:12,400 Second, the stamen is the male reproductive organ. 11 00:01:12,400 --> 00:01:28,700 Third, the pistil is the female reproductive organ and finally the calyx is made of sepals. 12 00:01:28,700 --> 00:01:43,400 The corolla attracts insects and the calyx protects the flower. 13 00:01:43,400 --> 00:01:44,400 Pollination. 14 00:01:44,400 --> 00:01:47,099 There are two different types of pollination. 15 00:01:47,099 --> 00:01:57,439 first one is animal pollination. A bee transfers pollen from one plant to 16 00:01:57,439 --> 00:02:13,780 another. Wind pollination. Wind transports pollen from one plant to another. Let's 17 00:02:13,780 --> 00:02:20,120 now go through the different steps in the pollination process. Number one and 18 00:02:20,120 --> 00:02:31,080 An insect takes pollen from a stamen to the pistil, it could also be the wind in the case 19 00:02:31,080 --> 00:02:35,500 of wind pollination. 20 00:02:35,500 --> 00:02:39,479 Number two, seed formation. 21 00:02:39,479 --> 00:02:50,810 Inside the pistil, the pollen and the ovule make the seed. 22 00:02:50,810 --> 00:02:55,030 Number three, fruit formation. 23 00:02:55,030 --> 00:03:06,030 The petals fall off and the pistil grows into a fruit. 24 00:03:06,030 --> 00:03:09,870 Number four, new plant. 25 00:03:09,870 --> 00:03:20,449 The fruit falls from the ground and a new plant grows from the seed. 26 00:03:20,449 --> 00:03:26,849 Remember that we need plants and plants need us. 27 00:03:26,849 --> 00:03:28,530 Thank you very much for listening.