Parts of a Flower
There is no better way to understand the parts of a flower, but to use an actual flower- or two flowers. So I have a got a carnation, I have got a lily. And what we are going to do is understand the parts of a flower using these two examples. So for a reason that I am going to tell you later, I am putting lily in my pocket. So I have got a carnation over here. What you can see here, the outermost whirl is what you call a Calyx. I am going to peel it and keep it aside and we are going to understand whirl by whirl. It’s made up of is component called the sepals. Now if I take my lily, it’s a special case-it’s an abreaction. Because if you look over here, it’s fused. The calyx is going to be fused or the sepals are going to be fused with the next whirl. Coming to the next whirl. which is called the beautiful and the colourful petals, the most prominent thing you will actually associate a flower with, each of you will associate a flower with – the petals. If you look at the carnation, the beautiful coloured pink petals are what will capture your eye. Like if I take my lily, these are the petals and if I can peel one off for you guys and keep it right here…you can actually see how it looks. So the sepals and petals are called accessory organs because they are accessory to the whole process of reproduction. How do they help? They help by looking beautiful.They look attractive, they smell lovely. Just take a lily and smell it, you will know. They smell absolutely amazing. So it attracts insects towards it, which helps you know in the whole process of fertilization. Let’s move on to the next whirl. For that I need to peel off the remaining beautiful petals of this lily. And hey, what do I find? I find two things. Two distinct things. I have got lot of these radish shaped structures. This is the male reproductive part of the plant and I have got a central female reproductive part of the plant. So the outermost one or the outer one among the two is the male reproductive part of the plant, which we call the androecium. And the androecium is made up of stamens. So the Androecium and the inner one, which is the gynoecium, they form what we call the essential whirls – essential to the process of reproduction. So what I am aging to do is , first I am going to take an androecium and keep it aside for you so that you can actually see how it looks. So what I kept aside for you is actually called a stamen, which is the part of the androecium. Many stamens together form the androecium. And what happens in the stamen is the production of pollen grains. So the pollen grains is what travels over to the female reproductive part and helps in fertilization. Coming to the last whirl, if I peel off all the…you know…the stamens one by one, I am left with the single unit of the female reproductive system also called the gynoecium. I will keep it aside for you so that you can see it clearly, and then we will describe its parts. So this single unit of the female reproductive system, the gynoecium is called the pistil or the carpel. What it does is that it has an ovary. Which houses the ovules or the eggs where the pollen grain would eventually travel and the whole process of fertilization would go ahead and happen.