Introduction to Biology

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Presentation transcript:

Introduction to Biology Week 8

Agenda Sign in, please turn in any late work Finish Mammal paper (last week) Notes on Plants Including question sheets and dissection Homework for next week Virtual lab

From Last Week… Finish Mammal Worksheet (Animal Diversity Web) See website at top of page.

Chapter 20: Plant Anatomy and Growth 20.1 Plant Organs Two parts- root and shoot Leaves-organs of photosynthesis Stems-supports leaves and transports materials Roots- anchors plant and absorbs water and nutrients from the soil Monocot vs. Eduicot See chart, page 344 Monocots- one cotyledon (embryonic leaves) Eudicots- two cotyledons

Monocot and Eudicot Coloring

20.2 Plant Tissues and Cells Plants grow their entire lives because of meristem (embryonic tissue) Three types of tissue Epidermal (covering) Ground (interior) Vascular (transport) Xylem- water and minerals Phloem-sugars

20.3 Organization of Leaves Leaf is called a blade, with a stalk called a petiole Interior of leaf has two layers of mesophyll (carries on photosynthesis) Palisade (long cells) Spongy (irregular cells surrounded by air spaces) Ends of veins are in mesophyll

20.4 Organization of Stems Wood- xylem that builds up year after year One year’s growth is called the annual ring, can be used to tell the age of trees

Help Wanted Activity

Chapter 21: Plant Responses and Reproduction 21 Chapter 21: Plant Responses and Reproduction 21.3 Sexual Reproduction in Flowering Plants Have an alternation of generations (sporophyte and gametophyte)

Flower: reproductive structure found only in angiosperms Parts Sepals- protect bud of flower during development Petals- attract pollinators Stamens- male portion where pollen is made (contains the anther on top of the filament) Carpel- female portion where ovary sits. Style (stalk) connect ovary with the stigma where pollen is deposited)

Flower Activity Dissection Coloring

Complete… Testing Yourself: Chapter 20 Chapter 21

Homework Read Chapters 22, 23 and 24 Study these words for a matching quiz: Virus, prokaryote, protist, vascular plant, nonvascular plant, fungi, sponge, cnidarian, annelid, arthropod, chordate, xylem, phloem, flower, fruit

Virtual Labs Plant Transpiration www.mhhe.com/maderessentials2