2010 PSLE Science
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sam6312:
[/quote]its 24 cos they said after the egg stage, so we don count the number of days it spends as an egg, only the number of stages it spends as a larva and pupa, which is 18+6=24. Answer is 24.
Does anyone know???!!! :idea:MOE Hater:
[quote=\"MOE Hater\"]
Thot 28 was excluding the egg stage!!!! I put 28! :shock:
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cocoong1998:
MCQ most were easy but erm a few were quite tricky! Section B was in the middle of tough and ok ok ! the question on toilet flushing i put >the stones in the plastic bottle occupy space and the water level will reach Level L quicker. less water will be used<sth>Matter occupies space< hope this helped!Blockbuster:
MCQ easy, but open-ended difficult. Question on toilet bowl flushing system?!
That's exactly what i put
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gemlol:
ya, it is 24.[/quote]mum-in-action:
It should be 10... Read carefully, the graph said that how long did each stage lasted or smth like dat. I am veri confident that it is 10, cus the pupa stage + larva stage for it to reach adult stage. Hence, it is 4+6
nono. the stages on the graph are put wrongly. it goes like this. egg, adult, larva, pupa. the pupa has 6 stages. egg has 4 stages like the adult. larva has 18 stages. so 18+6=24
i m so sorry, it is my mistake i didn't see properly. Thr goes my 1 mark~ -
Q:Name the stages insect X lives in water.
A:Egg,Larva,Pupa
Q:Suggest a reason for your answer.
A:Insect X has wings and goes through a 4 stage life cycle,thus, it will live in water till the adult stage as in the pupa stage it has to go metamorphisis(Growing of wings).
Can anyone confirm with me if my answer is correct? -
I read through the answers... A lot of wrong.
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please tell me the 30 answer of the science MCQ answer THX
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Gracious999:
For pt B,I talked about the spiracles and that the animals which it preys on lives in the water ...Q:Name the stages insect X lives in water.
A:Egg,Larva,Pupa
Q:Suggest a reason for your answer.
A:Insect X has wings and goes through a 4 stage life cycle,thus, it will live in water till the adult stage as in the pupa stage it has to go metamorphisis(Growing of wings).
Can anyone confirm with me if my answer is correct?
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The science paper was very tough. Can you please clear my doubts regarding these questions?
1.The toilet bowl question (How does placing a bottle with pebbles in the toilet bowl help to reduce the amount of water which is used to flush the toilet bowl)
2.The elephant question (How does having big ears help the elephant to thrive in a hot place) and part b of the same question (what is the disadvantage of the elephant having large ears in a dense forest)
3.The decomposition question (What measures can be taken to increase the rate of decomposition)
4.The magnet question (Why does stroking a iron nail using the North poles of 2 magnets would not magnetise the iron nail)
5.The fish question (The fish has its upper body grey in colour.How does this help it to camouflage in the water and escape from its predators)
I would really appreciate if you could help mw with these PSLE 2010 Science questions.Please!
Thank you,
Van Burklandish Hasnovian -
tiggerthong1998:
i said because only the adult stage of insect x has wings for movement, so the egg, larva and pupa stage will live in the water.
For pt B,I talked about the spiracles and that the animals which it preys on lives in the water ...Gracious999:
Q:Name the stages insect X lives in water.
A:Egg,Larva,Pupa
Q:Suggest a reason for your answer.
A:Insect X has wings and goes through a 4 stage life cycle,thus, it will live in water till the adult stage as in the pupa stage it has to go metamorphisis(Growing of wings).
Can anyone confirm with me if my answer is correct? -
maxtan:
please tell me the 30 answer of the science MCQ answer THX
why u ask? i tink no body will rmb wat they put. :idea:
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