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Biology; Chemistry; Physics: Post your doubts here!

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these points will come:
-cut open anther with scalpel
-add dye to pollen grains eg: iodine solution or methylamine blue
-sandwich some pollen between cover-slips
-hold cover-slips together by elastic bands
-make sure there are no air bubbles by lowering cover-slips at angle/remove any air bubbles
-place cover-slips on glass slides

please correct me or add any point missing.
the examiner report says we don't have to cut the pollen grains..?
 
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How to label a cross section of a fruit..... In some cases they say pericarp is the outer most layer ... In other cases epicarp is outer most then mesocarp than pericarp .... Very confused plz help :-@
 
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How to label a cross section of a fruit..... In some cases they say pericarp is the outer most layer ... In other cases epicarp is outer most then mesocarp than pericarp .... Very confused plz help :-@

lets hope we dont get that particular drawing, but the layers are as folows:
deepest=pericarp
less deep=mesocarp
outer=epicarp
 
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lets hope we dont get that particular drawing, but the layers are as folows:
deepest=pericarp
less deep=mesocarp
outer=epicarp

yes it is exactly like that and
How to label a cross section of a fruit..... In some cases they say pericarp is the outer most layer ... In other cases epicarp is outer most then mesocarp than pericarp .... Very confused plz help :-@

it depends what they ask you to label..if they ask you for Epicarp then you label the pericarp deep but otherwise you mark it outside..i guess..:eek:
 
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Are there only two questions in bio ATP cuz in 2011 nov/dec there were only 2 questions in it.........
 
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Are there only two questions in bio ATP cuz in 2011 nov/dec there were only 2 questions in it.........

there are moslty 3 if you look in the pps...they could have made an exception or change the amount of questions since then...:D
 
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there are moslty 3 if you look in the pps...they could have made an exception or change the amount of questions since then...:D
Man i have done the past papers from 2000-11...... My concepts are also 95% clear .....Is my preparation alrite.....
What should i do now cuz i've heard there is no need to do papst papers from 90's any more ....... :))
 
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Man i have done the past papers from 2000-11...... My concepts are also 95% clear .....Is my preparation alrite.....
What should i do now cuz i've heard there is no need to do papst papers from 90's any more ....... :))

umm..you can never say nuf cuz thats when the S!@# happens if you know what i mean...:D
 
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