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B4 09 plants and places
- 2. IB4.9.4 Different plants, different places
B4 Lesson 9 Fieldwork investigation
Learning Outcomes
investigate the effect of light on the
distribution of plants in an environment
perform a practical investigation using a
light meter, quadrat, and identification key
Keywords- quadrat, light
intensity, lux, key, distribution
© Oxford University Press 2011
- 3. IB4.9.4 Different plants, different places
Meadow flowers
On a whiteboard, in pairs, suggest
some factors that will influence the
ability of plants to grow in different
areas
© Oxford University Press 2011
- 4. IB4.9.4 Different plants, different places
Why do different plants grow in different places?
Because we put them there!
© Oxford University Press 2011
- 5. IB4.9.4 Different plants, different places
Soil composition
(nitrates and pH)
Amount of water
The effect of other
Light intensity for
organisms (grazing,
photosynthesis,
trampling).
© Oxford University Press 2011
- 6. IB4.9.4 Different plants, different places
Some flowers
can even
indicate the pH of
the soil
(hydrangea)
© Oxford University Press 2011
- 7. IB4.9.4 Different plants, different places
Reeds grow in ponds. How do
you think they are adapted to
survive in water?
Trees, bushes, and grass grow
in open land. What adaptations
do you think these plants have
to survive here?
© Oxford University Press 2011
- 8. IB4.9.4 Different plants, different places
Plants grow naturally in different conditions
Weeds can grow in the gaps or cracks in a pavement.
How do you think these weeds are adapted to survive
here?
© Oxford University Press 2011
- 9. IB4.9.4 Different plants, different places
Ivy grows on forest floors where
there is very little light.
Ivy has broad leaves to catch
as much light as possible.
© Oxford University Press 2011
- 10. IB4.9.4 Different plants, different places
Spot the difference
Dandelion from an uncut Dandelion from an area that
area, shaded by a tree. is cut with a mower.
© Oxford University Press 2011
- 11. IB4.9.4 Different plants, different places
Can you explain why?
Tall flower
stalk.
Short flower
stalk.
Big leaves that Small leaves close
stand upright. to the ground.
Dandelion from an uncut Dandelion from an area that
area, shaded by a tree. is cut with a mower.
© Oxford University Press 2011
- 12. IB4.9.4 Different plants, different places
The shading effect of trees
determines the types of
plant that can grow and
survive in woodland.
© Oxford University Press 2011
- 13. IB4.9.4 Different plants, different places
This scientist is using a
quadrat to record the
plants growing in a
square metre.
© Oxford University Press 2011
- 14. IB4.9.4 Different plants, different places
We carried out a field work investigation to
sample different types of plant and whether
they grew in the shady parts of the garden,
or the more sun lit areas.
We used:
Quadrat
Transect
Meter rule
Light meter to measure light intensity (lux)
Plant key
© Oxford University Press 2011
- 17. IB4.9.4 Different plants, different places
The results should be drawn in a kite graph like this one.
The measurements for the independent variable distance
(m), your graph will have more ground/plant species so
needs to be taller.
© Oxford University Press 2011
- 18. IB4.9.4 Different plants, different places
*You should be able to read a graph with
two ‘Y’ axes such as this, but should not
have to draw a kite graph
Be sure you know the independent and
dependant variables and can describe the
data using individual values
© Oxford University Press 2011
Editor's Notes
- Thomas Barrat
- Cliff Porter
- Cliff Porter
- Cliff Porter
- Cliff Porter
- Cliff Porter
- The shading effect of trees determines the types of plant that can grow and survive in woodland. P Phillips/Shutterstock
- This scientist is using a quadrat to record the plants growing in a square metre. Martyn F. Chillmaid/Science Photo Library
- Shady woodland
- Middle of field
