[IMPORTANT]20/5/2010 Biology Paper 6

[$H00t!N& $t@r]

no1 is answering my question 

[Burhan.arshad]

hey i have a question....
you know when you draw a line graph do you draw straight lines from one point to the other using your ruler, or is it always a freehand drawing, or a line of best fit?confuseddd

i think we have to make a best fit curve.......but i am not sure.....can any one confirm it?

[biro]

hey i have a question....
you know when you draw a line graph do you draw straight lines from one point to the other using your ruler, or is it always a freehand drawing, or a line of best fit?confuseddd

Free Hand is preferred most unless mentioned else

what incests figure?

He can bring an insect figure and a arthpod figure and ask you to compare visible features (if you don't know what are these then go and study characteristics of living organisms).

For M/J/08 Paper 6, Q.3)b)i):

How do we measure the distance grown (mm) accurately from the diagram.  The pollen tube is not a straight line so how do we measure it?

Q.3)a)ii)

Where is the micropyle?  Is it the whole in between C at the right-hand side?  The big hole?

Question 1: Try to divide the pollen tube into many straight lines so that you can measure them with your ruler.Don't worry there is always a range for answer like between 5-7 cm for example.

Question 2: It is the hole that pollen tube enters through to fertilize the ovum found inside the ovary (i.e it is the opening leading to the ovule)

t7aya msr enta mdrst a?

Saint Fatima

[Ivo]

Question 2: It is the hole that pollen tube enters through to fertilize the ovum found inside the ovary (i.e it is the opening leading to the ovule)

I've attached a picture for the question.  I still don't know where is the micropyle.  Therefore, which path is correct, the one in blue or the one in red.

Many thanks in advance.

[biro]

c



GUYS SORRY IT IS PREFFERED RULED LINE NOT FREE HAND

[Ivo]

How do we work out the SA of the leaf?  What method?

And how do we answer this question:

"Describe how you obtained an answer that was as accurate as possible." (2 marks)

Many thanks guys!

[Ivo]

c

What, so the one in red is the right one then?  And C is the micropyle?

Many thanks!

[biro]

How do we work out the SA of the leaf?  What method?

And how do we answer this question:

"Describe how you obtained an answer that was as accurate as possible." (2 marks)

Many thanks guys!

Count squares fully occupied by leaf as one cm...each one with 1/2 area occupied by leaf is counted as 1/2 cm...neglect those with less than 1/2
DONT COUNT SQUARES OCCUPIED BY PETIOLE

[biro]

What, so the one in red is the right one then?  And C is the micropyle?

Many thanks!

YUP 

[Ivo]

Count squares fully occupied by leaf as one cm...each one with 1/2 area occupied by leaf is counted as 1/2 cm...neglect those with less than 1/2
DONT COUNT SQUARES OCCUPIED BY PETIOLE

Thanks.  How about one's that are nearly occupied (e.g. box on 6th column, 2nd row)

[Ivo]

YUP 

Thank you! 

[biro]

Thanks.  How about one's that are nearly occupied (e.g. box on 6th column, 2nd row)

ah you mean nearly full...yup counted as 1 

[33oomar]

Homies i need help
I cant understand what exactly is "controlling the experiment "
and i also need help in doin paper 6 ....
wish me luck
and By the way paper 4 math sucked today it was so fuckin hard ....
well alhamdouliallah for everything

[Ivo]

I've attached a picture for the question.  I still don't know where is the micropyle.  Therefore, which path is correct, the one in blue or the one in red.

Many thanks in advance.

This was from the ER for this question.  I'm concerned about the 2nd sentance, does it mean the micropyle is not at C, and in fact the blue line is correct?  Please can someone explain!

Only a small number of candidates correctly drew the pollen tube which extended down the style
and entered through the micropyle, the gap between the two integuments. The most common error
was to show the pollen tube entering the ovule from the right by the label line for structure C, or to
rule a straight line from the stigma to the ovule.

SOMEONE PLEASE HELP!

[Baladya]

Thanks man very helpful Ta7ya masr hina bardoo