Plants can be classified into 2 main groups: • Non-Vascular Plants • mosses = no vascular systems • Vascular Plants • Gymnosperms = complex vascular system + bare seed (cone) • Angiosperm = complex vascular system + enclosed seed within a flower
You Tube Clips… • Attenborough – Venus Fly Trap • Pitcher Plants
Vascular Plants: Angiosperms Made of 4 organs: 1. Leaf – Photosynthesis, produce glucose 2. Stem – Supports flower for easy pollination, supports leaf to capture sun. 3. Root – Absorbs water and minerals from soil Anchors plant 4. Flower – For sexual reproduction Male gamete: Pollen Female gamete: Egg in ovary
Two types of Vascular Plants ~ P. 531 1. Monocot - Seed: eg. Corn, 1 cotyledon (seed leaf) - Stem: Vascular bundles scattered in pith - Flower: Multiples of 3 (trillium) - Leaf: Veins run parallel through leaf -Roots: Fibrous
Two types of Vascular Plants ~ P. 531 2. Dicot - Seed: eg. Peanut, 2 cotyledons - Stem: Vascular bundles in a ring - Flower: Multiples of 4 or 5 - Leaf: Veins are “net” like - Roots: tap root
Roots • Two types: 1. Tap root 2. Fibrous • Sketch and label diagram on page 533!
Stems • Herbaceous – green & soft, don’t survive the winter • Woody – tough & hard, survive winter
Vascular Tissue in Stems • Use the microviewers & complete the worksheet.
Go LEAVES Go!…Leaves in detail! How caterpillars survive on plants (youtube) 1. Use your book to complete the work sheet (structures and functions). Giant water lillies (youtube) 2. Colour code leaf diagram. 3. Leaves on Microviewers Activity.
Parts of the flower: Male reproductive part = stamen which are made up of… • filament - stalk • anther – produces pollen grains Female reproductive part = Pistil which is made up of… • style – stalk • stigma – sticky surface at tip of style • ovary – organ that contain the egg style
Pollination • Pollen grain moves from anther to pistil. • The grain forms a tube and pollen travels down it to the egg in the ovary. There is a different pollen grain for each egg. • Each fertilized egg becomes a seed. • The ovary wall becomes the flesh of the fruit.
You Tube clips…pollination • Attenborough- • Titan Arum • Orchid Mimic Wasps