Plants Introduction

BellringerBellringer1. Briefly tell the function of the 3 parts of

the plant cell that are unique to the plant cell.

2. Are plant cells eukaryotic or prokaryotic? Explain how you know this

Please sit with your previously assigned group

members.Thanks

ObjectiveObjective• You will be able to name and provide

characteristics of the 4 plants groups• You will be able to explain the difference

between monocots and dicots

PreAssessment

• Go to quizstar.4teachers.org

• Take Plants Test

Plants!!Botany = the study of plants!

Overview of Plant Kingdom• Botanists divide the plant kingdom into four groups – Flowering plants (angiosperms)– Cone bearing plants (Gymnosperms)– Ferns and relatives (seedless vascular plants)– Mosses and relatives (Bryophytes)

•Based on 3 factors:o Water-conducting tissueso Seedso Flowers

Today plant scientists can classify plants more precisely by comparing the DNA sequences of species.

Bryophytes• Low growing plants found

in moist, shaded areas.

• Lack vascular tissue, therefore these plants use osmosis to draw water up a few centimeters above ground.

• 3 groups– Mosses– Liverworts– Hornworts

Seedless Vascular Plants• Have true roots, stems, and leaves.

• Have specialized tissue that transports water and sugar.

• 3 groups– Horsetails– Club mosses – ferns

Gymnosperms• Conifers (Christmas

trees!)• “naked seeds”- cone

bearing plants (seeds grow on cones)

• Needle like leaves• Usually stay green

year around• Wind pollinated

– Examples: pine trees and evergreens!

Angiosperms• Flowering plants

• Seeds are enclosed in a fruit

• Most are pollinated by birds and bees

• Have finite growing season– Examples: grasses,

tulips, oaks, and dandelions

Angiosperms are divided into two main groups: http://www.youtube.com/watch?v=gI2RxzA

T-ww

Dicots:

Monocots:

Parts of the Plant• Roots/ Stems/ Leaves

Roots: -Water and minerals are

absorbed- Also used to anchor

the plant

• Stems– Transports water

and nutrients– Support plant

*Two types: herbaceous and woody

• Leaves– Photosynthetic

organ of the pant, used to convert sunlight into food!

Photosynthesis: Carbon dioxide +

water = Sugar + oxygen