Sexual Reproduction in Plants and Animals Sexual reproduction is a means for organisms to make "pretty good" copies of themselves It involves sperm and egg which are produced by meiosis in the male and female reproductive organs Sexual reproduction also requires fertilization to occur by uniting the sperm and egg
What we already know about sexual reproduction in humans... The male reproductive organs are called ____________ and they produce ____________. The female reproductive organs are called ___________ and they produce __________. Fertilization occurs (sperm and egg unite) in the female reproductive system in the ___________.
Let's compare sexual reproduction in humans to that in plants... The male reproductive organ is called the ___________ and it produces _____________ (sperm). The female reproductive organ is called the _________ and it produces _____________ (eggs). Fertilization occurs (pollen and ovules unite) in the ____________ of the female part of the plant.
Perfect or Complete Plants: Plants that have both female and male parts (pistil and stamen). These are able to self-pollinate or cross pollinate to produce offspring. Imperfect or Incomplete Plants: Plants that have either a male part or a female part (pistil or stamen). These plants are able to cross pollinate to produce offspring.
Sexual Reproduction in Plants: Pollination and Fertilization Pollination = spreading of pollen from the stamen to the pistil Self- Pollination = the pollen from a flower spreads to the pistil of the same flower Cross-Pollination = the pollen from one flower spreads to the pistil of a flower in another location Fertilization = Pollen + Ovules = Seeds Seed Dispersal occurs by wind, animals, humans, gravity, insects
Flower Dissection: Perfect Flower 1. Color the diagram 2. Count the parts 3. Take apart the male parts. 4. Take apart the female parts 5. Answer all the questions