LuluJ
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Has anyone done the unit 2 paper yet?? How was it?
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Lama1847
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(Original post by LuluJ)
Has anyone done the unit 2 paper yet?? How was it?
I did unit 2 bio, it was not easy and not had and it had some tricks .. Wbu.. Btw in the question about the penguin multiple choice they said which one was the emperor penguin which one did u choose
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LuluJ
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(Original post by Lama1847)
I did unit 2 bio, it was not easy and not had and it had some tricks .. Wbu.. Btw in the question about the penguin multiple choice they said which one was the emperor penguin which one did u choose
Most questions were really confusing. I probably wrote something totally unrelated for most of them. I chose A.. Because it said something about it branching off from the group that leads to all other penguin species.. What did you choose?
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Lama1847
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(Original post by LuluJ)
Most questions were really confusing. I probably wrote something totally unrelated for most of them. I chose A.. Because it said something about it branching off from the group that leads to all other penguin species.. What did you choose?
I chose D i found the question really confusing.. And as u said most of the questions were confusing and one of those questions is the very last on the exam that had 4 marks what did u write in it .. We can discuss answers
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LuluJ
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(Original post by Lama1847)
I chose D i found the question really confusing.. And as u said most of the questions were confusing and one of those questions is the very last on the exam that had 4 marks what did u write in it .. We can discuss answers
YES! That last question was SO confusing. I didn't even understand it properly!! It was about the twins right? I said if they are identical, they are genetically similar so any differences would be due to the environment and vice versa. It sounds better here when I think about it. My answer was more messed up than this xD
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Lama1847
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(Original post by LuluJ)
YES! That last question was SO confusing. I didn't even understand it properly!! It was about the twins right? I said if they are identical, they are genetically similar so any differences would be due to the environment and vice versa. It sounds better here when I think about it. My answer was more messed up than this xD
What about why should male palm trees should be grown .. Ask me questions too to answer them together
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LuluJ
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(Original post by Lama1847)
What about why should male palm trees should be grown .. Ask me questions too to answer them together
What did you write for that last one??
I said for genetic variation and sexual reproduction to occur. You?
What did you write for how to carry out tissue cultures to produce female date palms??
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Lama1847
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(Original post by LuluJ)
What did you write for that last one??
I said for genetic variation and sexual reproduction to occur. You?
What did you write for how to carry out tissue cultures to produce female date palms??
I wrote the same exact answer as u for the palm trees one .. But for the last one my answer was so messy that i dont even understand what i wrote but i remember saying that the identical twins have the same genotype and non identical twins have different genotypes so the 9% difference between 20% and 11% is due to environment i assure u that i dont even understand what i wrote and i doubt u do
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LuluJ
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(Original post by Lama1847)
I wrote the same exact answer as u for the palm trees one .. But for the last one my answer was so messy that i dont even understand what i wrote but i remember saying that the identical twins have the same genotype and non identical twins have different genotypes so the 9% difference between 20% and 11% is due to environment i assure u that i dont even understand what i wrote and i doubt u do
Yeah same here. I was so freaked out I messed it up because it was a type of question I've never seen before.
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Lama1847
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(Original post by LuluJ)
Yeah same here. I was so freaked out I messed it up because it was a type of question I've never seen before.
Is this a resit for u
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Lama1847
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(Original post by LuluJ)
Yeah same here. I was so freaked out I messed it up because it was a type of question I've never seen before.
Also there was that question that had a tissue with primary and seconday walls what was the tissue name
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Lama1847
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(Original post by LuluJ)
What did you write for that last one??
I said for genetic variation and sexual reproduction to occur. You?
What did you write for how to carry out tissue cultures to produce female date palms??
my answer for the female date palms is totally wrong coz im supposed to write about specialisation but i just the definition of tissue culture (haha) specialisation didnt even come to my mind when i was reading the question .. Wbu
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jsearapriet1
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(Original post by Lama1847)
Also there was that question that had a tissue with primary and seconday walls what was the tissue name
It could be sclerenchyma or xylem I think, I think I might've changed my mind 3 times during the exam. Cause there was something about cells, but xylem doesn't really have cells (they're dead) so it confused me.
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jsearapriet1
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(Original post by Lama1847)
I chose D i found the question really confusing.. And as u said most of the questions were confusing and one of those questions is the very last on the exam that had 4 marks what did u write in it .. We can discuss answers
I chose D too, cause it said that the emperor penguin was the first to branch off, and if you noticed D was the first to separate from the group - it was the first branch on the line that lead to A (the last species to evolve)
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jsearapriet1
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(Original post by Lama1847)
What about why should male palm trees should be grown .. Ask me questions too to answer them together
Allow sexual reproduction & therefore maintain high genetic variation and a large gene pool.
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jsearapriet1
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(Original post by LuluJ)
What did you write for that last one??
I said for genetic variation and sexual reproduction to occur. You?
What did you write for how to carry out tissue cultures to produce female date palms??
For the tissue culture I wrote about the use of explants from a parent plant with desirable characteristics, and to place these in a medium with nutrients. They would then grow to form full individuals genetically identical to the parent plant. (Idk how many marks it was, so maybe I might've lost one along the way)
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Lama1847
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(Original post by jsearapriet1)
It could be sclerenchyma or xylem I think, I think I might've changed my mind 3 times during the exam. Cause there was something about cells, but xylem doesn't really have cells (they're dead) so it confused me.
i wrote its sclerenchyma tissue
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Lama1847
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(Original post by jsearapriet1)
For the tissue culture I wrote about the use of explants from a parent plant with desirable characteristics, and to place these in a medium with nutrients. They would then grow to form full individuals genetically identical to the parent plant. (Idk how many marks it was, so maybe I might've lost one along the way)
what did u write for the question about the effect of damaged acrosomes on fertilisation
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jsearapriet1
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(Original post by Lama1847)
what did u write for the question about the effect of damaged acrosomes on fertilisation
I said reduces chances of the sperm penetrating the egg cell, so reduced fertilisation. This is because the acrosome contains enzymes that are essential for the destruction of the follicle cells & the zona pellucida that surround the egg cell. So with a damaged acrosome the sperm cell will find i more difficult to overcome these barriers.
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jsearapriet1
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(Original post by Lama1847)
i wrote its sclerenchyma tissue
I think I did too in the end, too scared to write xylem just in case cause it mentioned live cells hahah
:banana:
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