1. Sexual Reproduction in Plants Angiosperms & Gymnosperms

2. What is a seed??? Seeds are the products of sexual reproduction in most plants Seeds are the products of sexual reproduction in most plants A seed is a complete reproductive package that contains an embryo, a food supply, and a seed coat, which protects it from drying out A seed is a complete reproductive package that contains an embryo, a food supply, and a seed coat, which protects it from drying out

3. Two major groups of seed-bearing plants Angiosperms Angiosperms Gymnosperms Gymnosperms

4. Angiosperms are flowering plants are flowering plants seeds form inside flowers seeds form inside flowers When mature, the seeds are enclosed in a case, such as a pod, or shell When mature, the seeds are enclosed in a case, such as a pod, or shell

5. Gymnosperms do not produce flowers do not produce flowers most produce seeds inside cones most produce seeds inside cones Seeds have a coat that protects them from dehydration, but they are not enclosed in a case Seeds have a coat that protects them from dehydration, but they are not enclosed in a case

6. Sexual Reproduction in Angiosperms Over one half of all known plant species are angiosperms – some are large producing large showy flowers, some are tiny and easily overlooked Over one half of all known plant species are angiosperms – some are large producing large showy flowers, some are tiny and easily overlooked Regardless of their size, all flowers have the same function, they contain the plant’s reproductive organs Regardless of their size, all flowers have the same function, they contain the plant’s reproductive organs

7. Sexual Reproduction in Angiosperms Cont.. The female reproductive organ is called the pistil The female reproductive organ is called the pistil The male reproductive organ is called the stamen The male reproductive organ is called the stamen