Plants Form and Function. Parts of a Leaf What do these parts do?  Cuticle (waxy layer) and Upper Epidermis  Prevent Water Loss  Palisade Mesophyll.

Slides:

Advertisements

Similar presentations

TRANSPORT IN PLANTS.

Advertisements

Leaves - Overview Shoot system Leaf Blade Petiole

Stems and Leaves.

PLANT CIRCULATION Leaves - photosynthetic organs Stem - contain vascular tissue Roots - gas exchange, H 2 O absorption, mineral uptake.

LO: SWBAT explain how plants are adapted to carry out photosynthesis DN: Write the equation for photosynthesis. Identify the raw materials and end products.

Water movement through plants

LEAVES SBI 3C: JANUARY LEAF FUNCTIONS 3 main functions: Move oxygen and carbon dioxide in and out of plant Evaporation of water to move more water.

Photosynthesis (leaf structure)

Looking at Leaves. Leaf Parts of leave you can see : 1. blade and petiole.

Plants Tissues part 2 Stem Leaf.

Chapter 8: Photosynthesis Section 2: Overview of Photosynthesis.

9.1 Leaves. IB Assessment Statement Draw and Label diagrams to show distribution of tissues in the stem and leaf of a dicotyledonous plant Explain the.

Chapter 9. From cell to Organism : Plants Overview: Organization of the plant cell Exchange of gases Water transport Plant Control Systems.

Roots, Stems, Leaves. VASCULAR TISSUES Tissues that transport materials from one part of a plant to another.

Plant Structure (Leaves, Stems, Roots)

Unit 1; Area of Study 2 Functioning Organisms. Chapter 5 Obtaining Energy and Nutrients for Life.

The Leaf The Leaf is the Main photosynthetic organ in a plant.

Leaf and Chloroplast Structure. LEAF STRUCTURES:

Leaf Notes. Leaf Diagram Evolution of Photosynthesis First organisms = heterotrophic Problem: Too many organisms, not enough food Certain cells gained.

Plants and Light and Water transport. The Leaf Leaves are specialised structures for photosynthesis. They have several adaptation that suit them.

The Parts of the Leaf Introduction to Photosynthesis.

Plant structures What does a plant need for photosynthesis?

Leaves: Structure and Function. Main Functions 1. Principle sites of photosynthesis 6CO 2 + 6H 2 O 6O 2 + C 6 H 12 O 6 6CO 2 + 6H 2 O 6O 2 + C 6 H 12.

Aim: How are plants adapted to perform photosynthesis? HW: Test TOMORROW! Do Now: Photosynthesis Questions.

Structure of leaves.

Warm-Up #9 12/4/12 1) What are the 3 external plant layers? 2) Why are the top two layers clear? 3) What is the purpose of a stomata? 4) What controls.

Plant Transport. Water Movement in Xylem Sugar Movement in Phloem hill.com/sites/ /student_view0/ch apter38/animation_-_phloem_loading.html.

PLANT TISSUES. 1) Dermal Tissue  Form outermost layer of plant (like the skin)  Protects plant  Allows substances in and out through the stomata (will.

The Acquisition of Plant Nutrients Photosynthesis in General Light + CO 2 + H 2 O  C 6 H 12 O 6 + O 2.

Cross Section of a Leaf.

Plant structures What does a plant need for photosynthesis?

TO DO Label the cross section of the leaf on your worksheet Chloroplast Stoma Lower epidermisAir Spaces Upper epidermisSpongy Mesophyll Cuticle Palisade.

Aim: How do the structures of plants enable them to survive? RootsStems Leaves.

Bellringer Why is a daisy considered an autotroph?

Cortex – tissue inside the epidermis, storage organ Endodermis – a single layer of cells that acts as a wall between cortex and pericycle. Pericycle –

Water movement in plants.

UNIT 2 PART 5: PLANT STRUCTURE AND FUNCTION

Plant Structure. Plant Tissues A tissue is a group of cells organized to form a functional unit or a structural unit Plants have 3 tissue systems: –Ground.

Leaf Structure Aquaponics. Leaf Structure-Dermal layers Cuticle-The thin waxy covering on the outer surface of the leaf has a thin waxy covering This.

Chpt. 9 From Cell to Organism: Focus on Plants  How do multicelled organisms (i.e. plants) use specialized cells to accomplish the same functions as a.

The Leaf The Leaf is the Main photosynthetic organ in a plant. Controls gas exchange in plants. Controls the amount of water loss in plants when it is.

UNIT 2 PART 5: PLANT STRUCTURE AND FUNCTION

Plant Tissues and Organs

L6: Plant Tissues and Organs

Internal Structure of the Leaf

9.1 Transport in the Xylem of Plants

Photosynthesis (leaf structure)

Leaf Structure Vascular plants.

Transpiration & Translocation

Looking at Leaves.

Leaves Tissues of leaves and their function.

Photosynthesis.

Photosynthesis.

Leaves: Structure and Function

How are the following tissues adapted for their function?

9.1 Transport in the Xylem of Plants

Leaf Anatomy & Physiology The Photosynthesis Way

Photosynthesis.

PLANT NUTRITION AND TRANSPORT

Transport in Plants Chapter 14.

Tissues & organs.

Leaf Structures.

Leaf structure By Martin Samaj.

Transport in Plants.

Notes: Leaf Structure Cuticle Upper Epidermis Palisade Mesophyll

Plant cross-section.

B2 Photosynthesis Revision

Presentation transcript:

Plants Form and Function

Parts of a Leaf

What do these parts do?  Cuticle (waxy layer) and Upper Epidermis  Prevent Water Loss  Palisade Mesophyll  Cells contain lots of chloroplasts: absorption of light for photosynthesis  Vascular Bundles  Transport water to the leaf (xylem) and starch away (phloem)

What leaf parts do, con’t  Spongy Mesophyll  Loosely packed, surfaces for gas exchange  Lower Epidermis and Guard Cells  Guard cells open and close, controlling water loss by transpiration and allowing for gas exchange

The Xylem Xylem Phloem

The Xylem  Mainly carry water and dissolved minerals from roots to leaves  Woody plants- they provide support for the plant

The Phloem  Transports organic nutrients throughout the plant.  Carries starches away from plant.

Root Picture of Xylem and Phloem Xylem Phloem

Transpiration  Transpiration is the loss of water from leaves and stems of plants  This loss of water causes a “pull” on the rest of the water in the plant, causing water from the roots of the plant to continue moving upward.  This is caused by the cohesion between water molecules

Transpiration Pull  Upward movement through xylem generates a transpiration pull  Cohesion between water molecules allows water to by ‘sucked up’

Transpiration flow is controlled by the rate of water loss through the stomata

Closed Stoma  CO 2 uptake is LOW  Water loss is LOW

Stomata closing caused by:  Water shortage: forced closure to prevent dehydration  Darkness

Open Stoma  CO 2 uptake is high  Water loss is high

Stomata opening caused by:  Sunlight/high photosynthesis  Reduced CO 2 concentration

What affects rate of transpiration?  Wind  Increases the rate of transpiration because humid air near the stomata is carried away  Temperature  Increasing Temperature causes greater transpiration because more water evaporates  Light  Speeds up transpiration by warming the leaf and opening stomata  Humidity  Decreasing humidity increases transpiration because of the greater difference in water concentration

Photosynthesis  Generates a chemical storage of energy in the form of carbohydrates.  Converts light energy to chemical energy  Photosynthetic organisms are examples of autotrophs.

Photosynthesis Equation