2011 PSLE Discussions and Strategy

[Exam Pro]

For the MCQ Plant Question, my son put carbon dioxide. Is it water or carbon dioxide?

[psle 123]

I think it should be carbon dioxide and not water as there was a sufficient amount of water in the beaker. And as the rate of photosynthesis is more than the rate of respiration in the presence of light, the carbon dioxide would run out fast. thus, the answer should be carbon dioxide[i think]

[Verysuperkiasu]

psle 123:

I think it should be carbon dioxide and not water as there was a sufficient amount of water in the beaker. And as the rate of photosynthesis is more than the rate of respiration in the presence of light, the carbon dioxide would run out fast. thus, the answer should be carbon dioxide[i think]

my son also wrote carbon dioxide as the answer.

[ngbrdad]

psle 123:

I think it should be carbon dioxide and not water as there was a sufficient amount of water in the beaker. And as the rate of photosynthesis is more than the rate of respiration in the presence of light, the carbon dioxide would run out fast. thus, the answer should be carbon dioxide[i think]

So far a science teacher from DS's school said it's water.
HOD from Ms Tay's DS's school also said it's water.

[psle 123]

have the teachers seen the question fully yet?

[Verysuperkiasu]

ngbrdad:

psle 123:

I think it should be carbon dioxide and not water as there was a sufficient amount of water in the beaker. And as the rate of photosynthesis is more than the rate of respiration in the presence of light, the carbon dioxide would run out fast. thus, the answer should be carbon dioxide[i think]

So far a science teacher from DS's school said it's water.
HOD from Ms Tay's DS's school also said it's water.

CO2 is needed more than water. Maybe the HOD didn't read the question/see the diagram properly?

[ngbrdad]

Verysuperkiasu:

CO2 is needed more than water. Maybe the HOD didn't read the question/see the diagram properly?

The question is focus one which one is depleted more and faster, not on which is needed more.

We probably can only get a fair idea if we see the proper question.

[ngbrdad]

Correction. The science teacher from DS’s school that said the answer is water is also the HOD for science.

[Verysuperkiasu]

ngbrdad:

Verysuperkiasu:

CO2 is needed more than water. Maybe the HOD didn't read the question/see the diagram properly?

The question is focus one which one is depleted more and faster, not on which is needed more.

We probably can only get a fair idea if we see the proper question.

you're right...anyway, already done. can't change anything now.

[Peter Parker]

what did you people put for the section A last question, the one on the springs. ( science paper)