Aim: Reproduction in Flowering Plants Enter Date Aim: Reproduction in Flowering Plants Warm-up: HW:

Identify the following parts 1) 2) 3) 4) 5) 6) Petals Stigma Anther Style Ovary Filament

How does a plant reproduce? Flower may contain both male and female reproductive parts However, some flowers only male and others are only female

Stamen Anther – makes and holds pollen Filament – holds the anther

Pistil Ovary – makes and stores eggs Style – tube that brings eggs out of the ovary Stigma – keeps the opening to the ovary closed

Sticky part that collect pollen grains What is pollination? Transfer of pollen grains from the ANTHER to the STIGMA Stigma Sticky part that collect pollen grains

2 types of Pollination Self-pollination Cross-pollination transfer of pollen from anther to stigma of same flower Cross-pollination transfer of pollen from one plant to another

How does Fertilization Occur? Pollen grain lands on STIGMA & forms a POLLEN TUBE Results in a ZYGOTE

Why is pollination necessary? Like humans, plants require POLLEN to meet with the EGG in order to form a new offspring

How is pollination accomplished? Petals visual attractant Nectar acts as a chemical attractant Insects Animals Wind

The mixing of both pollen and ovary results in a ???? SEED

Fruit When pollen is able to fertilize an egg, the developing seed becomes a fruit. The fruit contains many seeds that will spread if the fruit goes uneaten.

Germination When fruit fall to the ground and release seeds, these seeds can burrow into soil and form a small plant This is known as germination The seed becomes a seedling and requires water and sunlight.

Gymnosperms Seed plants that do not form flowers

Angiosperms These are flowering plants