Qualification > Sciences
Edexcel BIOLOGY Doubts!!!!
rameeziiii:
--- Quote from: Malak on January 24, 2012, 04:55:46 pm ---^Thanks alot
Can anyone explain me Q7 b i and ii of this paper (attached)
--- End quote ---
Let me try to help as best as I can.
First off, you can see from the table that the Ulva photosynthesize most in RED light. From this, we know that the plant likes RED light and will flourish in areas with high amounts of RED light. Now, as the question says, RED light does NOT penetrate deep into water which means the plant will be most in shallow areas. This means that the Ulva will mostly be located at the top of the shore. Top of shore means the area with less water, in case you were wondering.
Second off, you can also see from the table that the dubyi photosynthesizes heaviest in GREEN light. Deep water ALLOWS for the penetration of GREEN light ( question says only yellow, orange, and red light are absorbed, meaning that green will pass through). Since GREEN light can reach deep into the water, the dubyi will be found all over the shore, as GREEN light reaches all those places.
Did that help?
SZM:
Hello forum, in our edexcel Biology new syllabus,under specification point number 1 in topic 1, 2, 3 4, 5, 6 7 and 8, it states, that-
Students will be assessed on their ability to demonstrate knowledge and understanding of the practical and investigative skills identified in numbers 4 and 5 in the table of How Science Works on page 13 of this specification.
Can u please tel me what does this specification point means and what do they want us to know?? Pls tel me clearly in details.
This is the link for edexcel GCE Biology new syllabus.
http://www.edexcel.com/migrationdocuments/GCE%20New%20GCE/UA024831%20GCE%20in%20Biology%20Issue%204%20250510.pdf
Please help me immediately///
I need ur reply very urgent.
Thanx for ur advance.
Malak:
How can we show variability on graph?
E.g. Unit 3B Sample assesment Q1 b (ii)
thanks
Amelia:
I think variability means the range, the interquartile range (IQR), variance, and standard deviation.
You know how to calculate those, right?
Romeesa-Chan:
Draw the error bars to show the variability.
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