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thank u !!
Any idea about 15 ??
Any idea about 15 ??
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Assalam-o-alaikum wr wb..thank u !!
Any idea about 15 ??
it's BAssalam-o-alaikum wr wb..
i 'think' the answer is B cuz most photosynthesis takes place in B therefore there will be least amount of carbondioxide and highest amount of Oxygen..
what's written in the mark scheme?
yeah...that's the reason thenit's B
For Q15 it says that the answer is B. From what I understood of it was that CO2 would diffuse into A, B, C and D. CO2 is not used a lot in A, C, or D so let's assume that they all have the same quantity of CO2. B, on the other hand, is a palisade cell which means its the main site of photosynthesis. Photosynthesis uses up CO2 which means the cell would have less CO2 in it after photosynthesis. Now if you compare all of these cells together, you can safely say that B would contain the least amount of CO2 in it because it carries out photosynthesis the most.Bio question
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_w07_qp_1.pdf
1) Q 15
2) Q 33 how will i know the answer ?
dude it is very easy about the ox state u just need 2 calculate but with the PH u just have to read the question they said adding KOH to potassium dichromate so the ph of dichromate is below 7 since it is acidic so adding alkali will 4 sure increase the PH no matter to 7 or above i hope u got itthinking about this logically .. we have water at the end therefore the solution becomes less acidic .. which means the pH increasesthe oxidation state of chromium stays 6+ ... as in the ionic eqn : 2CrO4 ^-2 + 2H+ ----> Cr2O7^2- + H2O .. hope u got it
Walikumassalam ,Assalam-o-alaikum wr wb..
i 'think' the answer is B cuz most photosynthesis takes place in B therefore there will be least amount of carbondioxide and highest amount of Oxygen..
what's written in the mark scheme?
Thanks aloooot for the help !!For Q15 it says that the answer is B. From what I understood of it was that CO2 would diffuse into A, B, C and D. CO2 is not used a lot in A, C, or D so let's assume that they all have the same quantity of CO2. B, on the other hand, is a palisade cell which means its the main site of photosynthesis. Photosynthesis uses up CO2 which means the cell would have less CO2 in it after photosynthesis. Now if you compare all of these cells together, you can safely say that B would contain the least amount of CO2 in it because it carries out photosynthesis the most.
For Q33, the producer is the missing element. You can also tell by reading the question. They mentioned organisms feeding on the rat and another feeding on these organisms (so you have consumers, carnivores, and predators) but they didn't mention anything about producers. You could also tell by he picture - no producers found.
I hope that helped
Your welcomeWalikumassalam ,
the answer is B !
Thank you for help !!
Q25..this is bcoz the radicle is bending towards the ground that means it is showing positive geotropism too/is responding towards the gravity too...Bio Questions
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_w06_qp_1.pdf
Q : 25 (why ans is not C ?)
Q : 40 ( ans can be A or not ??)
Q 25 : the question is about shoot not radicle... and shoot responded away from gravity (negative geotropism)Bio Questions
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_w06_qp_1.pdf
Q : 25 (why ans is not C ?)
Q : 40 ( ans can be A or not ??)
But the shoot is going up !!Q25..this is bcoz the radicle is bending towards the ground that means it is showing positive geotropism too/is responding towards the gravity too...
Q40..this is bcoz when plants lise their green color they can't photosynthesize, and therefore die!
thank u !!Q 25 : the question is about shoot not radicle... and shoot responded away from gravity (negative geotropism)
Q40: because green is the chlorophyll pigment..no chlorophyll-->no photosynthesis-->plants die !
yes it's A because the shoot "showed a response to gravity" which is negative because shoots always grow away from gravity while radicle always grows towards gravitythank u !!
But for Q 25 the ans is A !
I don't have this year paper !!hey guys..why is the answer to Q7 paper 1 bio nov. 1997 "B" ? :S
Is da answer B?Bio Qusetion
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_w04_qp_1.pdf
Q 30 why Answer is not D ??
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