Module 2 Exchange and transport - Groby Bio Page

Module 2 Exchange and transport - Groby Bio Page

Settler Explain how transpiration is a consequence of gas exchange Module 3 Exchange and transport 9.3 Transpiration (2 lessons)

Starter A3 memory game of a labelled potometer Why does transpiration vary? Feature that affects the rate of water How it affects water loss loss Number of leaves

Number, size and position of stomata Presence of cuticle Light Temperature Relative humidity

Air movement or wind Soil-water availability Learning Objectives Define the term transpiration

Describe the factors that effect transpiration rate Success Criteria Define the term transpiration (Grade D C) Describe the factors that affect

transpiration rates and how a potometer is used to measure these (Grade C B) Describe how a potometer, with the aid of diagrams, is Explain how practical investigations are used to used to estimate estimate transpiration rates

transpiration rates (Grade B A) Transpiration Transpiration is the Loss of water vapour from the upper parts of the plant by evaporation.

Transpiration involves 3 processes 1) Osmosis from the xylem to mesophyll cells 2) Evaporation from the surface of the mesophyll cells to the intercellular spaces 3) Diffusion of water vapour from the intercellular spaces out through the stomata Write a step by step journey of how and why a water molecule would travel from the soil into the xylem

Include keywords Minerals, active transport, ATP, water potential endodermis, casparian strip, cortex, water potential gradient, xylem Define the term transpiration (Grade D C) Transpiration rates 8 of 26

Boardworks Ltd 2008 Potometer experiment A potometer is used to estimate transpiration rates. Practical: investigate how wind affects transpiration rate. Demo set up, students to set up experiment and write a method,

Describe the precautions whilst recording results. that should be taken when Include key points using a potometer to shoot is healthy and leaves are dry ensure results are valid cut last 2-3 cm off cut end / cut at an angle and reliable

assemble apparatus / cut shoot, under water ; (Grade B A) check there are no air bubbles in apparatus once apparatus assembled make sure its water tight / air tight / has no leaks ; ACCEPT screw clip tight Problem is that potometer is only an estimate Measures water uptake ; not all water (taken up) is lost . 99% water taken up is lost some water used is used in photosynthesis / making cells turgid

Results Quantitative task Record your raw data in the most suitable form Evaluative task 1)Plot a suitable graph of your results 2)Use your processed data and graph to describe the trends in the data

Why is transpiration important?

Write down your reason on a post it. Share ideas on whiteboard Cools plant Minerals Cells turgid Growth/elongation Water is a raw material in photosynthesis Mineral ions and products of photosynthesis are

transported HD Opening and closing of stoma Why does transpiration vary? plenary

Complete table on factors affecting transpiration worksheet Jan 10 Question 4 - homework Describe the factors that affect transpiration rates and how a potometer is used to measure these (Grade C B) Exam Practice

Recently Viewed Presentations

  • Seminar Announcement December 24, Saturday, 15:00-17:00, Room: A302,

    Seminar Announcement December 24, Saturday, 15:00-17:00, Room: A302,

    Fog computing is a visualized network architecture that uses one or a collaborative multitude of end-user clients or near-user edge devices to carry out a substantial amount of storage, communication, and control, configuration, measurement, and management. It can offload the...
  • Objectives of the day  (Obj 1) Summarize the

    Objectives of the day (Obj 1) Summarize the

    Thinking about what you know about osmosis, what would happen if you drank very salty water? Turn and Talk. The body can handle a little bit, but if you were to consume nothing but salt water for a period of...
  •   2 ( )    :   3 :  2    1

    2 ( ) : 3 : 2 1

    جلسه اول علم سیستماتیک تاریخچه رده بندی طبقه بندی گیاهان اصول و واحدهای رده بندی سیستم های رده بندی اهداف سیستماتیک نامگذاری گیاهان مرفولوژی ریشه مرفولوژی ساقه مرفولوژی برگ مرفولوژی گل و ...
  • 2014 Legislative Update

    2014 Legislative Update

    * Section 2 - Definitions Classification score Common assessment DJJ school Designed length of stay Eligible students Exiting students Learning gains Sufficient data Program type * Section 3 - Rating Framework Three ratings Commendable Acceptable Unsatisfactory 14-day data review period...
  • Plants from Images CS 658 Neubert et al.

    Plants from Images CS 658 Neubert et al.

    Neubert et al.'s Approach. Take pictures. Compute opacity values for a voxel grid. Compute skeleton for each photo. Compute vector field for each photo
  • Unit 27 Task 3 - WordPress.com

    Unit 27 Task 3 - WordPress.com

    Does the mid point review show that weeks 5-8 need to be adapted? Describe How you will adapt your sessions? As we have come to the mid point, Conors body would now have adapted to doing the training, so he...
  • Professional Showcase

    Professional Showcase

    Jim Dudley Mara Restoration. Sean Kidd Mara Restoration. Antonio Mercado ...
  • Brief Cognitive Assessment based on Consensus Standards in ...

    Brief Cognitive Assessment based on Consensus Standards in ...

    Identify a brief assessment tool for cognition in MS. can be used by health care professionals who are not cognitive specialists. has international validation. Specify an international validation protocol that can be implemented in any country. Agree guidelines on test-retest...