Zappy:

Maybe... but typically, in such questions, I think u need to be able to link it in a sequence.


Eg. Fertilizer poured in, the light decreases first. Then what's next? It affects photosynthesis, which affects the plants. Then fewer plants... Less oxygen... Etc etc.

But never mind la. It's over. Go enjoy the well earned break for both parents n students. If really want the 100% correct standard answer, next year go n peep at psle booklet answer sheet.

Haha, thanks for the advice! Appreciate it :imcool:

Zappy:

No light -> Underwater plants cannot photosynthesize -> Underwater plants decrease -> Less oxygen produced since fewer plants -> Less oxygen in water -> Fish decrease

Shouldn't oxygen decrease first since the plants are respiring and take in oxygen?

shirishj:

plants cannot photosynthesize and so lesser dissolved oxygen in water.

you may be right,but if both compete for oxygen,both fish and plants will decrease at the same time.
(i am just a student so i may be wrong)

That seems true as well...

shirishj:

plants cannot photosynthesize and so lesser dissolved oxygen in water.

you may be right,but if both compete for oxygen,both fish and plants will decrease at the same time.
(i am just a student so i may be wrong)

That seems true as well...

shirishj:

kiasuparentpsle:

Hi parents! My daughter said that this time the science paper was slightly tough, and she rushed through the questions. There was one qn in the MCQ about the fertiliser in the pond. My daughter put first the amount of light is lesser, then the oxygen level decreases then the plants n fish decrease. But my daughter says that her friends all put an answer diff from her. For those who want to know what the qn is, the qn is about a farmer using fertiliser that would allow the floating plants to grow faster. Then there are a few options like the amount of light, fish decrease, submerged plants decrease, oxygen level decrease, and amount of light decrease. Then they asked for the sequence in which these would happen. Anyone, help? My DD says she already lost 4-6 marks.

first of all, amount of light will decrease
secondly,the underwater plants will decrease,
thirdly, dissolved oxygen would be lesser
fourthly fishes will decrease

Sorry to trouble you, but may I ask why? Since there is no light, the plants respire and take in oxygen right? The fish also take in oxygen so shldnt the oxygen levels decrease first?

Do you think that Cedar Girls cut off point will be lower this year? My DD wants to calculate her PSLE marks if it really happens, so, assuming she gets 90.5 for english, 94 for maths, 83 for chinese and 90 for science, how much do you think she will get for PSLE? Just asking fr opinions.

Hi parents! My daughter said that this time the science paper was slightly tough, and she rushed through the questions. There was one qn in the MCQ about the fertiliser in the pond. My daughter put first the amount of light is lesser, then the oxygen level decreases then the plants n fish decrease. But my daughter says that her friends all put an answer diff from her. For those who want to know what the qn is, the qn is about a farmer using fertiliser that would allow the floating plants to grow faster. Then there are a few options like the amount of light, fish decrease, submerged plants decrease, oxygen level decrease, and amount of light decrease. Then they asked for the sequence in which these would happen. Anyone, help? My DD says she already lost 4-6 marks.

My daughter said this time chinese paper is slightly tough. Did you guys put 充足 or 充实? My daughter put 充实，but she said many of her friends put 充足. She said she confirm lose 10 marks liao. Anyways now has to prepare for Science PSLE! Good luck all P6s!

00skyblue00:

Shade the sides of each cubes which are not painted. Label each cube of sides painted.

kiasuparentpsle:

[quote=\"lee_yl\"]

https://i.postimg.cc/rsf5zBCN/A4_C12_FA0-503_C-46_F6-_B34_C-91_D3_B3_F70_D1_F.jpg\">
Regarding the cube question, it was mentioned that 8 cubes were stacked up to form the above figure. If the whole figure is dipped in paint, count the number of cubes that has 4 sides covered with paint.
(1 mark).

Regarding this question, my daughter counted the cubes. Since she manually count, how to do working? :?

[/quote]Thanks so much! My daughter drew out the whole thing and labeled the sides painted. She also shaded the diagram. Thats ok also right?

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