PSLE 2012 - Science

[Big fish]

wsywin2012:

http://i48.tinypic.com/2yybjtj.png\"> for qn 11 i found the diagram online!!

Qn 11 shows a diagram of a flower
the question was: xxx removed a part of the flower such that the flower stopped producing seeds. (or smt liddat)

http://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Mature_flower_diagram.svg/350px-Mature_flower_diagram.svg.png

What is the answer?????????

[wsywin2012]

Big fish:

wsywin2012:

http://i48.tinypic.com/2yybjtj.png\"> for qn 11 i found the diagram online!!

Qn 11 shows a diagram of a flower
the question was: xxx removed a part of the flower such that the flower stopped producing seeds. (or smt liddat)

http://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Mature_flower_diagram.svg/350px-Mature_flower_diagram.svg.png

What is the answer?????????

stigma i think... already mentioned on
2012 PSLE Discussions and Strategy

[Big fish]

Tks. That is the problem of having 2 threads. Don’t know where to see.

[GLORYmum]

Big fish:

Tks. That is the problem of having 2 threads. Don't know where to see.

Pls discuss here lah.

[atutor2001]

wsywin2012:

stigma i think... already mentioned on

I thought it should be ovules. If there is no elaboration on \"how the part is removed\", I would think that the ovules can be removed through genetic manipulation - isn't that how they produced seedless fruits such as grapes and papaya. However, if it is ovules, then \"remove\" is a bad choice of word.

[wsywin2012]

atutor2001:

wsywin2012:

stigma i think... already mentioned on

I thought it should be ovules. If there is no elaboration on \"how the part is removed\", I would think that the ovules can be removed through genetic manipulation - isn't that how they produced seedless fruits such as grapes and papaya. However, if it is ovules, then \"remove\" is a bad choice of word.

umm there wasnt an option for ovules

[Kiasukiasuofall]

wsywin2012:

atutor2001:

[quote=\"wsywin2012\"]
stigma i think... already mentioned on

I thought it should be ovules. If there is no elaboration on \"how the part is removed\", I would think that the ovules can be removed through genetic manipulation - isn't that how they produced seedless fruits such as grapes and papaya. However, if it is ovules, then \"remove\" is a bad choice of word.

umm there wasnt an option for ovules[/quote]
There wasn't any option for ovules...

[concerned_of_PSLE 10]

I thought should be anther because the stigma may be pollinated beforehand without pollen grain fertilisation cannot happen

[wsywin2012]

concerned_of_PSLE 10:

I thought should be anther because the stigma may be pollinated beforehand without pollen grain fertilisation cannot happen

cross-pollination (pollen grains from other flowers) can still occur.

[creamyhorror]

atutor2001:

James Ang:

The use of fans creates wind which is moving air and the presence of wind increases the rate of evaporation and produces a greater cooling effect.

Fan is used to disperse the mist to reach different parts of the room so that the room will cool down at a faster rate. It is also to prevent the tiny water droplets from combining into large droplets (precipitation like rain cloud) that would fall to the floor and wet the room.

I think all 3 points are correct. Higher air movement inherently results in an increased evaporation rate.

Sounds like this year's paper had a few challenging application questions. Hope my brother figured something out, especially for that interesting frog/tadpole question :skeptical: