ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

[сᴏᴏʟ сяуѕтᴀʟѕ]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_w11_qp_11.pdf
can someone answer question 4 .... y isnt c an answer how can a sperm have chloroplast??!! in ms it says B is the answer i kno sperm cell doesnt have cell wll bt it doesnt chloroplast either

Assalam-o-alaikum wr wb..
the question is which feature is present in a root hair cell but not a sperm cell..
chloroplast is not found in root hair cell too

 

[ygyh45]

Assalam-o-alaikum wr wb..
the question is which feature is present in a root hair cell but not a sperm cell..
chloroplast is not found in root hair cell too

omg really ? looooool oh yeah m soo dumb ok thanks soo much

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

omg really ? looooool oh yeah m soo dumb ok thanks soo much

haha...it's not about being dumb...at times we don't even see the simplest things...
Your welcome

 

[svenas]

umm...can you please quote the post where i replied?

http://www.xtremepapers.com/papers/...nal O Level/Biology (5090)/5090_w11_qp_11.pdf question 9
one more :http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_s08_qp_1.pdf question 29
thanks!

 

[whitetiger64]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Biology (5090)/5090_w11_qp_11.pdf question 9
one more :http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_s08_qp_1.pdf question 29
thanks!

As for yor second question, the length of the arthropod continues to increase, so the answer can not be C, since in that the length stays almost the same. As the exoskeleton weas off, the arthropod becomes smaller before growing again, so staright lines are impossible. This eliminates A and D, leaving us with B. I hope this is clear, if not, feel free to ask again!

 

[svenas]

A

umm...can you please quote the post where i replied?

Also this http://www.xtremepapers.com/papers/...nal O Level/Biology (5090)/5090_w11_qp_11.pdf q33

 

[svenas]

As for yor second question, the length of the arthropod continues to increase, so the answer can not be C, since in that the length stays almost the same. As the exoskeleton weas off, the arthropod becomes smaller before growing again, so staright lines are impossible. This eliminates A and D, leaving us with B. I hope this is clear, if not, feel free to ask again!

thanks for replying 75% I got it....can u explain me wat exactly the question says?

 

[whitetiger64]

thanks for replying 75% I got it....can u explain me wat exactly the question says?

The question asks you to evaluate, how the arthropod grows over time......so does it just keep growng(A), or it stops and den grws and stops again etc. (B), or grows a bit, den loses that height, den grws again etc. (C) or doesnt grow at all (D).
Is that better? (sry i'm bad wid wrds!)

 

[Alool]

does anyone have 1999 marking scheme?
thanks!

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Biology (5090)/5090_w11_qp_11.pdf question 9

If you still didn't understand feel free to ask again
and lemme have a look at your other questions

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

A

Also this http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Biology (5090)/5090_w11_qp_11.pdf q33

A and B are from male plants...i.e the pollen grain and the pollen tube..so it's gene definately won't be identical..
therefore the answer can either be C or D..
i think C is wrong bcoz it's the ovule..it's characteristics will be different if the male gamete fertilizes with another ovule...so the answer should be D...as it's part of the 'main' plant...not the reproductive part..

makes sense?

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Biology (5090)/5090_w11_qp_11.pdf question 9
one more :http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_s08_qp_1.pdf question 29
thanks!

understood the second question or you want me to explain?

 

[svenas]

If you still didn't understand feel free to ask again
and lemme have a look at your other questions
View attachment 12630

yea I got it now really ....ok can u explain the other question which lemme explained ...I'm unable to understand the question...
Also this http://www.xtremepapers.com/papers/...nal O Level/Biology (5090)/5090_w11_qp_11.pdf questions 19, 26, 31, 40----u explained it yesterday but I didn't get it that much...
Sorry for lot of questions....I'm really praying to u....wish u all the best master!

 

[svenas]

understood the second question or you want me to explain?

explain it plz

 

[Alool]

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

yea I got it now really ....ok can u explain the other question which lemme explained ...I'm unable to understand the question...
Also this http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Biology (5090)/5090_w11_qp_11.pdf questions 19, 26, 31, 40----u explained it yesterday but I didn't get it that much...
Sorry for lot of questions....I'm really praying to u....wish u all the best master!

it's okie...don't be sorry! and Jazakallah Khair for your prayers...May Allah give you more than what you desire..Aameen!
any doubt?

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

View attachment 12650

Assalam-o-alaikum wr wb..
this is bcoz boiled liver won't react with the enzyme catalase only raw liver will...

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

does anyone have 1999 marking scheme?
thanks!

Assalam-o-alaikum wr wb..
check it here..

 

[meriama]

guys what's molluscicde in bio??

 

[Alool]

Assalam-o-alaikum wr wb..
this is bcoz boiled liver won't react with the enzyme catalase only raw liver will...

so the answer is C?