Gas Exchange in Plants What are the two main gases that all organisms on earth need to exchange back and forth between themselves and the environment?

Slides:

Advertisements

Similar presentations

Plant Parts - Leaves 2001 AgriTeach.comTM (12901ms)

Advertisements

Plants and Photosynthesis

Cycling of Matter in Living Systems 3.3 The Leaf Tissue and Gas Exchange.

Cycling of Matter in Living Systems 3.1 Cells, Tissues, and Systems and 3.2 The Leaf and Photosynthesis.

Plant Tissues and Organs. Plant Tissues All plants are made up roots, stems, leaves and flowers. These structures are made up of cells These cells are.

Leaf Structure and Function. Basic functions 1. Photosynthesis: process which plants use the energy from sunlight to produce sugar (for themselves) 2.

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

Quiz Wiz How do unicellular organisms transport?

Photosynthesis (leaf structure)

Mrs. Degl1 Plant Respiration & Photosynthesis Most leaves provide a large surface for the absorption of light energy. Roots are structures specialized.

carbon dioxide + water glucose + oxygen

PHOTOSYNTHESIS Energy is used to make: Proteins Sugars Fats

Plants General characteristics eukaryotes autotrophs, photosynthetic

SCIENCE Plant Test Review Plant Test Review Good Luck! Good Luck! (Mrs. Yantosh)

Maintenance of Living Things

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.

Do now! 1. The process in which water exits the leaf through the stomata is called _____________ 2. Stomata are tiny ______ located on the ________ epidermal.

Leaf Structure and Function. Basic functions 1. Photosynthesis: process which plants use the energy from sunlight to produce sugar (for themselves) 2.

Parts Of Plant – Photosynthesis

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

Functions of plants Quiz 13A. Plants are supported by two related systems: cell walls- cellulose turgor pressure - water pressure inside a plant cells.

1.The leaf contains a waxy layer at the top, palisade layer, and spongy mesophyll layer. 2.Guard cells can change the size of stomata 3.The xylem carries.

Leaf Structure and Function. Basic functions 1. Photosynthesis: process which plants use the energy from sunlight to produce sugar (for themselves) 2.

L EAF S TRUCTURE B4a. T HE L EAF What might happen to leaf structure if climate change continues?

Regents Biology Photosynthesis: Life from Light and Air.

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

Parts of the Tree & Leaf Learning about botany. Cross Section.

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

Phloem dead xylem active xylem. What is vascular tissue exactly?

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

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.

But where does the energy come from????

Gas Exchange in Plants SBI 3U. Plants need Oxygen too. Plants obtain the gases they need through their leaves. They require oxygen for respiration and.

Cross Section of a Leaf.

Regents Biology Regents Biology Photosynthesis: Life from Light and Air.

Plant structures What does a plant need for photosynthesis?

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

Plant Systems Part II. Plant Tissues A tissue is a group of cells working together to perform a similar function. – The cells in tissues are specialized.

Regents Biology Regents Biology Photosynthesis: Life from Light and Air.

Photosynthesis Turning Light into Life. What is Photosynthesis? Autotrophs convert Sunlight  to Chemical Energy.

Leaf Structure.

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

Regents Biology Regents Biology Photosynthesis: Life from Light and Air.

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

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.

How Plants Make Food  Photosynthesis = the process by which plants make food  Photo = light  Synthesis = putting together  Takes place mainly in.

Leaf Adaptation. To know how leaves are adapted for photosynthesis.

Plant Tissues and Organs

L6: Plant Tissues and Organs

Internal Structure of the Leaf

Photosynthesis (leaf structure)

Structure – Leaves stem roots

Plants at work J E F Frost Plants at work.

Structure – Leaves stem roots

Plant Parts - Leaves What are YOU lookin’ at?

Photosynthesis.

Structure and Function of Plants

Photosynthesis.

Transport in Plants.

4.4 – Tissues Working Together

Photosynthesis and Respiration

Notes: Leaf Structure Cuticle Upper Epidermis Palisade Mesophyll

Photosynthesis Photosynthesis Song

Plant cross-section.

B2 Photosynthesis Revision

Structure – Leaves stem roots

Plant Adaptation Noadswood Science, 2012.

Presentation transcript:

Gas Exchange in Plants What are the two main gases that all organisms on earth need to exchange back and forth between themselves and the environment? OXYGEN AND CARBON DIOXIDE

Why do autotrophs and heterotrophs need to exchange these gases? A. Autotrophs SUCH AS Need CO 2 for photosynthesis. 2. Use O 2 for cellular respiration. 3. Get rid of excess O 2 through... STAY TUNED!

Why do autotrophs and heterotrophs need to exchange these gases? B. Heterotrophs SUCH AS Use O 2 for cellular respiration. 2. Get rid of CO 2 as a waste gas.

How do flowering plants exchange these gases? They use three vegetative structures: 1.Roots 2.Stems 3.Leaves

How do flowering plants exchange these gases? 1. Roots a. CO 2 dissolves in water in soil. b. CO 2 absorbed by root hairs; transported by xylem c. Photosynthesis produces O 2 ; transported by phloem.

How do flowering plants exchange these gases? 2. Stems a. Lenticels – tiny openings in stems for gas exchange. (white “spots” are the openings)

How do flowering plants exchange these gases? 3. Leaves a. Review leaf’s cross-section structure. Cuticle Upper epidermis Lower epidermis Palisade layer Spongy layer Guard cells and stomata

How do flowering plants exchange these gases? 3. Leaves b. O 2 and CO 2 AND H 2 O are exchanged at stomata formed by guard cells. c. Guard cells are in OPEN position when filled with water and CLOSED when water is scarce. Guard cell Animation

How do flowering plants exchange these gases? 3. Leaves d. What type of plant would be most likely found in the rainforest? One with lots of guard cells or one with few guard cells? LOTS OF GUARD CELLS – WHY?

How do flowering plants exchange these gases? 3. Leaves e. Gas exchange also happens at spongy layer and palisade layer.