[IMPORTANT]20/5/2010 Biology Paper 6

[Vin]

See there is one type of bubble method where u count the number of bubbles produced by an aquatic plant by using a potometer ..

[Ivo]

What is figure 1.1 about ??

as far as i can comprehend ..

1.take same species of plants
2.same amount of volume of water with dye
3.Same temperature
4.start the experiment at the same time
5.cover with plastc to avoid evaporation
6.repeat the experiment

..

Here is Fig...

By the way, in the mark scheme it says ""method of measuring uptake (of dye/water), either by bubble method or lossof coloured solution/water), so what is bubbble method?

[Ivo]

See there is one type of bubble method where u count the number of bubbles produced by an aquatic plant by using a potometer ..

It's about dye moving up tube or something:

http://www.practicalbiology.org/areas/advanced/exchange-of-materials/transpiration-in-plants/measuring-rate-of-water-uptake-by-a-plant-shoot-using-a-potometer,62,EXP.html

[Ivo]

It's about dye moving up tube or something:

http://www.practicalbiology.org/areas/advanced/exchange-of-materials/transpiration-in-plants/measuring-rate-of-water-uptake-by-a-plant-shoot-using-a-potometer,62,EXP.html

This is it.  Measuring bubble moved from starting position.

Do you think that's right?

[NidZ- Hero]

can any1 plz help me wid this
"Describe the processes involved in the changes of directional growth of the shoot of the
seedling."

[Ivo]

can any1 plz help me wid this
"Describe the processes involved in the changes of directional growth of the shoot of the
seedling."

Which paper?

[NidZ- Hero]

Which paper?

m/j 2006

[Ivo]

m/j 2006

You could say something along the lines:

- Negative geotropism - grows opposite direction to gravity.  This ensures shoots grow upwards getting the leaves into sunlight.
- Positive phototropism - grows towards the light.  This means leaves expose maximum sruface area to light.  They can therefore absorb more light more efficiently for photosynthesis.
- Mention auxin as well.
- Talk about shoots grow because cells multiply by mitosis - leading to growth.

[Hargreaves]

Umm could someone just tell me all the labels when drawing a fruit or vegetable (like tomato and garlic)

q2 in M/J 08 has a question on this.

Also i've finished studying most of the stuff and am doing past papers i've done all summer examinations from 06-09 any others i should do?

[NidZ- Hero]

can any 1 please explain me de stages in de population graphh plllzzzz urgent 

[NidZ- Hero]

Umm could someone just tell me all the labels when drawing a fruit or vegetable (like tomato and garlic)

q2 in M/J 08 has a question on this.

Also i've finished studying most of the stuff and am doing past papers i've done all summer examinations from 06-09 any others i should do?

wait 10 min

[NidZ- Hero]

Umm could someone just tell me all the labels when drawing a fruit or vegetable (like tomato and garlic)

q2 in M/J 08 has a question on this.

Also i've finished studying most of the stuff and am doing past papers i've done all summer examinations from 06-09 any others i should do?

[aangel42]

***Has a food test for fats ever come? (emulsion test) please let me know asap! thanks :]

[High-R]

is m.j. 2008 easy?!

[bulono]

what do we have to write in O/N 2006 Q1 c.....