Author Topic: Biology Help Please ??  (Read 4782 times)

Offline camel

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Re: Biology Help Please ??
« Reply #15 on: June 05, 2009, 09:04:48 am »
Whos been -repping me.
What did i do??!

hello little girl... r u ready?


im sorry but that just sounded wrong  :P

AHAHAHA QUESTION 27 JUNE 2005 explanation please anyone??
someone has been repping me too :(

Offline sanity_master

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Re: Biology Help Please ??
« Reply #16 on: June 05, 2009, 09:06:13 am »
+ rep for u :)

Offline camel

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Re: Biology Help Please ??
« Reply #17 on: June 05, 2009, 09:07:33 am »
+ rep for u :)

thank you :) could you explain q. 27 june 2005

fatihligs

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Re: Biology Help Please ??
« Reply #18 on: June 05, 2009, 09:10:48 am »
+ rep for u :)

thank you :) could you explain q. 27 june 2005




the answer is D BECAUSE plant bends toward the light that is positive phottropism
and the invertebrates is in dark place which is negative phototaxis

Offline kam

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Re: Biology Help Please ??
« Reply #19 on: June 05, 2009, 09:12:43 am »
can someonle tell me

if u increase humidity and temperature etc

will the rate of transpiration increase?

Offline AS girl

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Re: Biology Help Please ??
« Reply #20 on: June 05, 2009, 09:14:17 am »
Increasing humidity=decrease transpiration
increasing temperature (not to much)=increases transpiration
If i fall along the way pick me up and dust me off...and if i get too tired to make it..be my breath so i can walk!!

Offline Bani

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Re: Biology Help Please ??
« Reply #21 on: June 05, 2009, 09:14:45 am »
Someone, please answer my question....

Offline kam

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Re: Biology Help Please ??
« Reply #22 on: June 05, 2009, 09:15:10 am »
Increasing humidity=decrease transpiration
increasing temperature (not to much)=increases transpiration

thx
+rep

Offline omfg.natalie

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Re: Biology Help Please ??
« Reply #23 on: June 05, 2009, 09:17:48 am »
+ rep for u :)

thank you :) could you explain q. 27 june 2005

It is D. This is because when Invertabrated move away from a light source, this is negative phototaxis.
When a plant bends towards the light, this is positive phototropism.

Also, remember that when invertabrates respond to chemicals, this is called Chemotaxis
When they respond to gravity, this is geotaxis

Offline kam

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Re: Biology Help Please ??
« Reply #24 on: June 05, 2009, 09:19:56 am »
bani

its B cuz leaves are green due to photosynthesis
its short cuz its too cold to grow
enzymes are not at their optimum

Offline AS girl

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Re: Biology Help Please ??
« Reply #25 on: June 05, 2009, 09:20:52 am »
please help:O/N 2007, paper 1, Question No.29
And can u please tell me the reason the answer is not B, because I  think since there is light, the plant should bend, as auxin will be destroyed....


It has nothing to do with auxins..5 degree celsius is a low temperature..so enzymes are inactive..rate of photosynthesis is low so the plant will grow but not that high!
the answer is B By the way!

Hope u understood my explanation
« Last Edit: June 05, 2009, 09:23:10 am by IG girl »
If i fall along the way pick me up and dust me off...and if i get too tired to make it..be my breath so i can walk!!

Offline camel

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Re: Biology Help Please ??
« Reply #26 on: June 05, 2009, 09:22:58 am »
+ rep for u :)

thank you :) could you explain q. 27 june 2005

It is D. This is because when Invertabrated move away from a light source, this is negative phototaxis.
When a plant bends towards the light, this is positive phototropism.

Also, remember that when invertabrates respond to chemicals, this is called Chemotaxis
When they respond to gravity, this is geotaxis

thnkss

Offline Bani

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Re: Biology Help Please ??
« Reply #27 on: June 05, 2009, 09:36:42 am »
please help:O/N 2007, paper 1, Question No.29
And can u please tell me the reason the answer is not B, because I  think since there is light, the plant should bend, as auxin will be destroyed....


It has nothing to do with auxins..5 degree celsius is a low temperature..so enzymes are inactive..rate of photosynthesis is low so the plant will grow but not that high!
the answer is B By the way!

Hope u understood my explanation
Oh I meant why is the asnwer not D....So its because it says the colour of the leaf is yellow, but in B its green.
So, since photosynthesis is happening in B, the colour is green, and thats why the asnwer is B
Ok, thanks, +rep :)

Offline Bani

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Re: Biology Help Please ??
« Reply #28 on: June 05, 2009, 09:43:44 am »
bani

its B cuz leaves are green due to photosynthesis
its short cuz its too cold to grow
enzymes are not at their optimum
Oh thanks, + rep :)

Offline Bani

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Re: Biology Help Please ??
« Reply #29 on: June 05, 2009, 09:46:20 am »
And can please someone explain me Q31 , O/N 2007, pleaseee. How do we work it out?