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Photosynthesis

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Miss O' Neill

on 23 January 2013

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Transcript of Photosynthesis

Photosynthesis- Lessons Miss O' Neill New topic: Photosynthesis Homework:
for next lesson the starter will be to
explain the limiting factors of photosynthesis.
I expect you to be able to answer it- no notes. What would be the limiting factors of photosynthesis?


Why?


How would each effect the rate of photosynthesis? What do you think? Explain the test for starch in a plant

use the following link:
http://www.footprints-science.co.uk/Starch.htm

What two independent variables are being investigated in the demonstration? Testing for starch: (10 min) Starter (5 min) Explain the results indicated for each
of the tests as shown in the demonstration. (4) Exam question:
(5 min…’cause I’m nice) Plants use the glucose they “produce” for respiration and some of it is stored as starch.

Before we test the conditions necessary for photosynthesis we must de-starch the plant- why?

De-starching= putting in a condition where photosynthesis would not take place- how would we do this? Glucose Is there anything else they should have included? Peer assess: (3 min)


Explain in terms of particles, cells, bonds and energy the process of photosynthesis.

Use the thinking frames/books/notes from video to help you. How does photosynthesis take place? (15 min) Could we exist in a land with no plants? Photosynthesis
40 min Keywords:
photosynthesis, chlorophyll, glucose, explain, de-starched Discussion
10 min Starter
5 min By the end of this lesson you will…
Explain the word equation for photosynthesis.
Explain why plants should be de-starched before photosynthesis experiments and describe how this is done
Explain the steps involved in testing a leaf for starch
Define the term explain Plenary: Photosynthesis
40 min Keywords:
photosynthesis, chlorophyll, glucose, explain, de-starched Discussion
10 min Starter
5 min By the end of this lesson you will…
Explain the word equation for photosynthesis.
Explain why plants should be de-starched before photosynthesis experiments and describe how this is done
Explain the steps involved in testing a leaf for starch
Define the term explain Photosynthesis lesson 1- what is photosynthesis? Plenary (5min) Results: Explain why- use key ideas and biological knowledge
(collision theory, particles, energy, cells, proteins, enzymes, limiting factor, optimum) Elodea, funnel, large beaker, gas syringe, lamp, thermometer, kettle, test tube, meter stick, timer

Books and Laptops also available for research Equipment available Investigate the effect of light intensity or temperature on the rate of photosynthesis and plot data.
Choose equipment
State method
Table
Graph Task: 25 min what are the limiting factors of photosynthesis and how do they affect the rate of photosynthesis? Starter (5 min) Limiting factors &
investigation
30 min Keywords:
Limiting factor Analysing
data
10 min Starter
5 min By the end of this lesson you will…
Define the term limiting factor with regards to photosynthesis
Investigate the effect of light intensity or temperature on the rate of photosynthesis and plot data.
Analyse and explain your results
Interpret data and explain results in terms of limiting factors. The Lesson Map So what is happening here? Limit how fast photosynthesis happens

The reactants/conditions necessary if they are missing-
then rate is not as high as what it could be, i.e. it is limited



Factors= CO2 concentration, Light intensity and temperature Limiting factors Limiting factors &
investigation
30 min Keywords:
Limiting factor Analysing
data
10 min Starter
5 min By the end of this lesson you will…
Define the term limiting factor with regards to photosynthesis
Investigate the effect of light intensity or temperature on the rate of photosynthesis and plot data.
Analyse and explain your results
Interpret data and explain results in terms of limiting factors. Photosynthesis lesson 2-
Limiting factors Evaluate the benefits of artificially
manipulating the environment
in which plants are grown (6). homework Describe and explain the optimum conditions you have chosen
Link your answer to all of the limiting factors and the rate of photosynthesis

Use graphs and data in your answer along with an analysis and evaluation of your design Peer assess


What would make a good answer?
What points would you need to think about
How would you lay out your answer Evaluate the benefits of artificially manipulating the environment in which plants are grown (6). Describe and explain the optimum conditions you have chosen
Link your answer to all of the limiting factors and the rate of photosynthesis

Use graphs and data in your answer along with an analysis and evaluation of your design (40 min) Design a greenhouse where conditions will be controlled to optimise the growth of plants. Research and
Design, evaluation
(40 min) Keywords:
Limiting factor Peer assess&
6 mark q-
what’s
in a good
answer Starter
5 min By the end of this lesson you will…
Recap what the limiting factors of photosynthesis are
Explain how conditions in greenhouses can be controlled
to optimise the growth of plants.
Evaluate the benefits of artificially manipulating the
environment in which plants are grown. The Lesson Map Research and
Design, evaluation
(40 min) Keywords:
Limiting factor Peer assess&
6 mark q-
what’s
in a good
answer Starter
5 min By the end of this lesson you will…
Recap what the limiting factors of photosynthesis are
Explain how conditions in greenhouses can be controlled
to optimise the growth of plants.
Evaluate the benefits of artificially manipulating
the environment in which plants are grown. Photosynthesis lesson 3-
greenhouses
What colour would the indicator go if you breathed out into it?
What colour would the indicator go if the plant is respiring and carrying out photosynthesis at the same rate? Why?
Select the two times of the day that this is most likely to happen? NIGHT, DAWN, MID MORNING, LUNCHTIME, AFTERNOON, DUSK. Important Information:
Green plants and algae use up carbon dioxide – removing it from the indicator as they carry out photosynthesis.
BUT.. they also produce carbon dioxide as they respire – all living things respire all the time Result in dark: explain Result with thin shading: explain How can we show that plants use
carbon dioxide in photosynthesis? Option 1: You are a glucose molecule in a plant and your daddy glucose molecule is telling you stories about the adventures of Indiana glucose

Option 2: you are a glucose molecule giving career advice to younger glucose molecules

Option 3: Luke glucose and obi-wan glucose are at a perilous war as the starch lord tries to convert them to the starch side


And for the boring folk….

Option 4: Create a rhyme about plants and glucose

All must: List ways in which glucose is used by a plant.
Describe functions of fats, oils, cellulose, starch and proteins in a plant Story time (30 min) Uses of glucose
30 min Keywords:
Glucose, starch, cellulose, protein, Bicarbonate
Test- analysis
Of results Starter
5 min By the end of this lesson you will…
List ways in which glucose is used by a plant.
Describe functions of fats, oils, cellulose, starch and proteins in a plant.
Interpret results of bicarbonate indicator experiment
Hypothesise future results based on your understanding The Lesson Map Result in bright light: explain Hydrogencarbonate indicator is used to measure carbon dioxide levels in aquatic systems.
It is red in equilibrium with atmospheric air.
It becomes more orange/yellow with increased carbon dioxide levels.
It changes from red through magenta to deep purple as carbon dioxide is removed. Atmospheric CO2 level Decreasing CO2 in indicator Increasing CO2 in indicator Hydrogencarbonate Indicator Which is the odd one out
and why? Uses of glucose
30 min Keywords:
Glucose, starch, cellulose, protein, Bicarbonate
Test- analysis
Of results Starter
5 min By the end of this lesson you will…
List ways in which glucose is used by a plant.
Describe functions of fats, oils, cellulose, starch and proteins in a plant.
Interpret results of bicarbonate indicator experiment
Hypothesise future results based on your understanding Photosynthesis lesson 4-
use of glucose If plants need minerals from soil to grow- then how does an air plant grow? Evaluation to be completed for next lesson

Mark scheme not on prezi!  Homework Research and explain how air plants then grow and how hydroponics works and then evaluate the future use of hydroponics in agriculture (6)
Don’t forget- what should an evaluation contain!! Using the books- what minerals are required by plants and why.


Then using the equipment provided to you determine a method to prove this.
Include: method, list of controls and expected results Minerals If plants need minerals from soil to grow- then how does an air plant grow? Minerals in plants
30 min Keywords:
nitrates, magnesium Air plants and
Hydroponics
30 min Starter
5 min By the end of this lesson you will…
Name 2 minerals plants need to grow
Describe their function in plant growth
Plan and complete an experiment to prove this
Research and explain how air plants then grow and how hydroponics works
evaluate how hydroponics could change the future of agriculture The Lesson Map Minerals in plants
30 min Keywords:
nitrates, magnesium Air plants and
Hydroponics
30 min Starter
5 min By the end of this lesson you will…
Name 2 minerals plants need to grow
Describe their function in plant growth
Plan and complete an experiment to prove this
Research and explain how air plants then grow and how hydroponics works and evaluate how hydroponics could change the future of agriculture Photosynthesis in plants- minerals In Teams of 3 you have 50 min to assemble a model of a leaf cell
You are also to annotate and explain your model.


It must include: Name the different parts of a leaf (10 marks)
Relate its structure to function (20 marks)
Explain how leaves have adapted for their function (20 marks)


Next lesson you will have the second part of your challenge (60 marks) where each of the members of will undertake a quiz on today's work- your scores today will combine with each of your scores tomorrow to give you your final score Scrap yard challenge 1 What am I? Scrap yard
Challenge 50 min Keywords:
chlorophyll, chloroplast, stomata, guard cells, palisade layer,
air spaces, xylem, mesophyll Re-cap
5 min Starter
5 min By the end of this lesson you will…
Name the different parts of a leaf
Relate its structure to function
Explain how leaves have adapted for their function photosynthesis lesson 6-
leaf structure Scrap yard
Challenge 50 min Keywords:
chlorophyll, chloroplast, stomata, guard cells, palisade layer,
air spaces, xylem, mesophyll Re-cap
5 min Starter
5 min By the end of this lesson you will…
Name the different parts of a leaf
Relate its structure to function
Explain how leaves have adapted for their function The Lesson Map Mind map Plant dating You will be handed your task sheet- eyes to yourself- everyone’s score counts Scrap yard challenge 2 Recap: Plant Dating
10 min Scrap yard
Challenge 2 20 min Keywords:
chlorophyll, chloroplast, stomata, guard cells, palisade layer,
air spaces, xylem, mesophyll, limiting factors, photosynthesis Mind map
25 min By the end of this lesson you will…
Recap leaf adaptations and structure
Recap limiting factors
Recap photosynthesis The Lesson Map Plant Dating
10 min Scrap yard
Challenge 2 20 min Keywords:
chlorophyll, chloroplast, stomata, guard cells, palisade layer,
air spaces, xylem, mesophyll, limiting factors, photosynthesis Mind map
25 min By the end of this lesson you will…
Recap leaf adaptations and structure
Recap limiting factors
Recap photosynthesis lesson 7- recap
Full transcript