ANGIOSPERMS

Morphology vs. Anatomy Morphology is the study of the external structure of plants Ex. placement of leaves along a stem

Morphology is the study of the external structure of plants

Ex. placement of leaves along a stem

Anatomy is the study of the internal structures of plants Ex. the arrangement of cells and tissue within a leaf

Anatomy is the study of the internal structures of plants

Ex. the arrangement of cells and tissue within a leaf

MONOCOTS VS. DICOTS Angiosperms are split into 2 classes Monocots – single cotyledon (seed leaf) Dicots – two cotyledons Cotyledon - seed leaf, one in moncots and two in dicots; primary embryonic leaf within the seed in which nutrients for the new plant are stored (left- dicot, bean; right- monocot, corn)

Angiosperms are split into 2 classes

Monocots – single cotyledon (seed leaf)

Dicots – two cotyledons

Cotyledon - seed leaf, one in moncots and two in dicots;

primary embryonic leaf within the seed in which nutrients for the new plant are stored (left- dicot, bean; right- monocot, corn)

Roots, Stems & Leaves Roots anchor the plant into the soil Absorb minerals and water Conduct water and nutrients Store food

Roots

anchor the plant into the soil

Absorb minerals and water

Conduct water and nutrients

Store food

Monocot root Cross section

Dicot Root cross section

Stems May be vegetative (leaves)

Stems

May be vegetative (leaves)

Stems may be floral (flowers)

Stems may be floral (flowers)

Stems Have alternation of nodes (points at which leaves are attached) Have internodes (stem segments b/w nodes)

Stems

Have alternation of nodes (points at which leaves are attached)

Have internodes (stem segments b/w nodes)

Modified Stems Stolons are horizontal stems that grow along surface ex. strawberry runners

Stolons are horizontal stems that grow along surface ex. strawberry runners

Rhizomes are horizontal stems that grow underground ex. Irises

Rhizomes are horizontal stems that grow underground ex. Irises

Tubers are enlarged ends of rhizomes that store food ex. potatoes

Tubers are enlarged ends of rhizomes that store food ex. potatoes

Bulbs are vertical, underground shoots with fleshy leaf bases modified food storage

Bulbs are vertical, underground shoots with fleshy leaf bases modified food storage

Monocot stem cross section

Dicot stem cross section

Leaves Main photosynthetic organs of plants Consist of a blade and a stalk (petiole) which joins the leaf to the stem Grasses and many monocots lack petioles

Leaves

Main photosynthetic organs of plants

Consist of a blade and a stalk (petiole) which joins the leaf to the stem

Grasses and many monocots lack petioles

Some monocots have petioles

Some monocots have petioles

Venation Monocots have parallel major veins that run the length of the leaf blade Dicots generally have a multibranched network of major veins All leaves have numerous minor cross veins

Monocots have parallel major veins that run the length of the leaf blade

Dicots generally have a multibranched network of major veins

All leaves have numerous minor cross veins

Modified Leaves Spines, thorns and prickles Tendrils

SUMMARY

WHAT DO I NEED TO KNOW Unifying characteristics of gymnosperms Unifying characteristics of angiosperms Explain how gymnosperms are adapted for survival in a land environment with respect to the following Alternation of generation Roots Stems Leaves seeds Pollen Vascular tissue

Unifying characteristics of gymnosperms

Unifying characteristics of angiosperms

Explain how gymnosperms are adapted for survival in a land environment with respect to the following

Alternation of generation

Roots

Stems

Leaves

seeds

Pollen

Vascular tissue

Use specimens to differentiate between monocots and dicots Describe how angiosperms are adapted for survival in a land environment with respect to the following Alternation fo generations Flowers Pollen Enclosed seeds Fruit Roots Stems Leaves Vascular tissue

Use specimens to differentiate between monocots and dicots

Describe how angiosperms are adapted for survival in a land environment with respect to the following

Alternation fo generations

Flowers

Pollen

Enclosed seeds

Fruit

Roots

Stems

Leaves

Vascular tissue

Compare the ways in which mosses, ferns, gymnosperms and angiosperms have adapted to a land environment TEXT Read all the following… Ch 22 all sections Ch 23 most pictures, 23-4(modified roots),23-5,23-7 Ch 25-1,25-2 Answer the following questions… Page 484&485 all Page 514&515 (mc#2,TF#1,2,4,5,6,8 WR#1,4 CM#3,4,6 CCT#2,3,4,5,7,8) Page 548&549 (mc#1-4,7,8 TF#1,3-7 WR#1,3 CM#2,3,4,5,6,8 CCT#1,2,4,6,7

Compare the ways in which mosses, ferns, gymnosperms and angiosperms have adapted to a land environment

TEXT

Read all the following…

Ch 22 all sections

Ch 23 most pictures, 23-4(modified roots),23-5,23-7

Ch 25-1,25-2

Answer the following questions…

Page 484&485 all

Page 514&515 (mc#2,TF#1,2,4,5,6,8 WR#1,4 CM#3,4,6 CCT#2,3,4,5,7,8)

Page 548&549 (mc#1-4,7,8 TF#1,3-7 WR#1,3 CM#2,3,4,5,6,8 CCT#1,2,4,6,7