Edexcel 6BIO2 ~ 3rd June 2013 ~ AS Biology

Can it be cross-sectional?

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My point is that the question is only 3 marks and this is AS Level. We are not meant to go into details of such processes, This is evidently shown in the markscheme.

Putting that aside, I agree with your statement, however its not needed in a question such as this and doing so would ultimately waste time.

I'd draw a cross section. A circle with gaps indicating pores and then a dense splodge in the middle for a nucleolus.

yea...agreed!!!
Good luck for tomorrow

Anyone has the examiner's reports for 2013 Bio?

Are umbilical cord and placenta stem cells pluripotent or multipotent??

Are umbilical cord and placenta stem cells pluripotent or multipotent??

Do we use a control in practicals to ensure reliability or validity?

Do we have to know about tumours, metasis and melignants in cancers?

Much obliged chocip

However, have you got any past paper questions on polygenic inhertiance, including the ones with the punnett squares?

Every experiement has a control apart from the tensile strength experiment and the observing mitosis one.

Do we use a control in practicals to ensure reliability or validity?

the digestive enzyme break down and digest the style and surrounding tissue, it digests the middle lamella(region between the cell wall) so that it is easier for the pollen tube to grow and it reduces resistance. the tissues digested/hydrolysed are used as nutrients and energy so that the pollen tube can grow...
hope that helps