Dear All,
My child is doing the past year paper and when come to the above question, he said not his level topic and he found out from the PSLE Science guide book it is upper block topic. Can anyone advise does your P4 child learnt the above? How do your child answer the above? By the way, this is taken from Nan Hua Pri SA2 2011 paper.

My boy answer
1. The water level in the cup will drop
2. The flower petals will turn purple
3. The water carrying tubes named the xylem is at work.

I am not sure about 2. Whether turn purple or some petals turn red, some blue.

Hi
This question tests on the plant transport system,which is taught in school in Primary 5.For b,the colour of the flower would be purple.
Charsen.

Thanks charsen for clarifying question 2

2)half the flower will be red and other half will be blue.
ans provided in the mgs sa2, 2010.
when i did first time i also think wrongly,then i saw the answer, quite reasonable.there is no chance to mixed two waters.imagine like more straws put side by side.

Smartmummy
Thanks for clarifying.
Will let my boy know. :-)

hi,

to clarify, this is an application question applied from topic plants system. (function of stem is to carry water n mineral salts to all parts of the plant)

Ans :
a) the water level in both cups will decrease.
b) some parts of the flower will turn red while some parts will turn blue.
c) the water-carrying tubes called xylem caused the flower to change its colour.

hihi,
want to ask...
when heated, metal expands, so when it expands, does it become heavier?
thanks.

I think the answer is no.

Key words - MASS does not change!