Flowers and Plant Reproduction Online Lesson 1 Watch this first, and then answer the questions on the worksheet.

Plant Reproduction Plants reproduce and make seeds via their sexual organs, flowers. This needs to occur for the survival of their species. Flowering plants are known as angiosperms. Not all plants flower and reproduce this way. Although all flowers have common parts, variations occur within these parts. Flowering plants make up the most of the Plant Kingdom- i.e. there are more flowering plants than any other type of plants. Many flowering plants form fruit around the seed once it has been fertilized.

Example of a flower Graphic drawn by myself on Microsoft Paint and Adobe Photoshop.

Parts of a flower As you can see, flowers have several parts, these are: Petals- These are for protecting the inner parts of the flowers, and attracting potential carriers of pollen. Sepals- These are left over leaves that are used when to protect the flower when it’s a bud. Anther- This contains the pollen. Filament- The stalk of the stamen. Together the Anther and Filament form the Stamen. Stamen- formed by the anther and filament, the male reproductive organ of a flower.

Parts of a flower cont. Stigma- the receptive part of the female reproductive organs, on which pollen germinates. Style-Elongated part of female reproductive organ, which bears stigma. Ovary- Hollow region of Carpel, contains ovules (eggs). Carpel- The female reproductive organ which is made up of the stigma, style and ovary. Also called the pistil.

Complete/ Incomplete Flowers and Perfect/ Imperfect Flowers As mentioned earlier, most flowers are similar, but not the same. A complete flower is a flower that has all parts (petals, sepals, stamens and carpels) present. An incomplete flower is one that is lacking one or many of these parts. A perfect flower is one that has both male and female reproductive organs (e.g. lily), and an imperfect flower is one that only has one reproductive organ (e.g. hazelnut flower).

References All graphics used in this presentation are from Microsoft Clipart, except the flower diagram. development-06web.pdfhttp:// development-06web.pdf