Biology practical

[iman noubani]

my biology practical test paper 3 AS is on Tuesday; any advices on what shud i focus on?

 

[Navi94]

im repeating AS bio this tuesday as well and what ive seen is they always give us the steps in part 1 in which the experiment should be carried
follow those correctly and ull be able to ace it InshAllah.
for part 2 which is microscopy i suggest u luk thru the diff plant tissues such as xerophytes and normal mesophyll layer,the vascular bundles,root cells and animal tissues such as the respiratory section ,liver cells,the artery and vein
learn the labelling and remembr if dey ask u to draw a plan diagram NO CELLS jst relative differences in thicknesses.
oh yes and go thru food tests jst in case
all the best

 

[iman noubani]

im repeating AS bio this tuesday as well and what ive seen is they always give us the steps in part 1 in which the experiment should be carried
follow those correctly and ull be able to ace it InshAllah.
for part 2 which is microscopy i suggest u luk thru the diff plant tissues such as xerophytes and normal mesophyll layer,the vascular bundles,root cells and animal tissues such as the respiratory section ,liver cells,the artery and vein
learn the labelling and remembr if dey ask u to draw a plan diagram NO CELLS jst relative differences in thicknesses.
oh yes and go thru food tests jst in case
all the best

thank you; but i didnt understand what do yu mean by no cells?
thank yu yu too x

 

[Navi94]

No cells meaning for eg in the paper M/J 2007 paper 31
they gave us a a slide of the transverse section of the leaf and asked us to draw a plan diagram
as you know the leaf has a cuticle then epidermis then mesophyll layer and so on.
you must show the distribution of tissues i.e dont draw any palisade cells or spongy cells
Jst show the LAYERS of tissues nthg more than that

 

[iman noubani]

No cells meaning for eg in the paper M/J 2007 paper 31
they gave us a a slide of the transverse section of the leaf and asked us to draw a plan diagram
as you know the leaf has a cuticle then epidermis then mesophyll layer and so on.
you must show the distribution of tissues i.e dont draw any palisade cells or spongy cells
Jst show the LAYERS of tissues nthg more than that

thank you so much
i appreciate it

 

[Navi94]

anytime

 

[Ashleyxoxo93]

how do you tell the difference between tissues? especially xylem and phloem. And what exactly is vascular bundle? Is it the combination of xylem and phloem?

 

[Navi94]

vascular bundles are the combination of xylem and phloem.
xylem vessels r empty tubes in the stem bcuz dey carry water and salts and are continous cells together no cells walls or anything
bt phloem have cells packed with mitochondria and sieve elements have sieve plates b/t cells so you have distinguish easily.

 

[lionkill3r]

vascular bundles are the combination of xylem and phloem.
no cells walls or anything
.

Dont xylem cells have lignified cell walls ? :S

 

[pokhrel_lily]

is thr a prediction for bio p34 yet?

 

[uhannan]

can anyone post lung slides here?

 

[Navi94]

Sorry typo what i meant was cell plates ..its like a long pipe within the stem
thanks for pointing that out

 

[Navi94]

All the best everyone!
May Allah shower His blessings on you all Ameen !

 

[Aarjit]

Here, this might help. Good luck!

 

[Fizz911]

Here, this might help. Good luck!

thank u so much.....these notes r preety helpful. ..