Q&A - PSLE Science

[tianzhu]

youngtay:

Mr Tianzhu


Thanks for your explanation.

Best wishes

Hi youngtay

You’re welcome.

Please do not be so formal by addressing me as Mr Tianzhu.

If you are a daddy or mummy, just call me tianzhu.If you are a kid, just call me uncle tianzhu.

Just take this forum as a platform where members exchange their views/ideas in a friendly and conducive environment.

Best wishes

[atutor2001]

youngtay:

.....


question 16. Which of the following statements about the animal and plant transport systems are true?

A. An animal needs an organ to pump blood to transport materials around the body.
B. No organs are needed by a plant to transport materials around the plant.
C.A plant has only one type of tube to transport materials around the plant.
D.Only oxygen and digested food are transported around the body of an animal.

(1) A only
(2) A and B only
(3) A,B and D only
(4) B, C and D only.

.....

Option B is also False.

Cells form tissues and a collection of tissues form organ. Organ is not confined to animals. Plants have cells, tissues and therefore organs. Roots and stems are organs of plants and are needed for for transportation of materials.

Therefore the answer is (1) A only

[Nebbermind]

But are they taught that stem and roots are organs? :?

[starlight1968sg]

atutor2001:

youngtay:

.....


question 16. Which of the following statements about the animal and plant transport systems are true?

A. An animal needs an organ to pump blood to transport materials around the body.
B. No organs are needed by a plant to transport materials around the plant.
C.A plant has only one type of tube to transport materials around the plant.
D.Only oxygen and digested food are transported around the body of an animal.

(1) A only
(2) A and B only
(3) A,B and D only
(4) B, C and D only.

.....

Option B is also False.

Cells form tissues and a collection of tissues form organ. Organ is not confined to animals. Plants have cells, tissues and therefore organs. Roots and stems are organs of plants and are needed for for transportation of materials.

Therefore the answer is (1) A only

Animals have a heart to pump blood...
Plants dont have such an organ ie heart.
Plants have 2 types of tubes.
Carbon dioxide and waste materials are transported round the animals too.
Thus ans should be (1)

[atutor2001]

Nebbermind:

But are they taught that stem and roots are organs? :?

Some schools yes, most schools no. However, they should have covered knowledge on what makes an organ. Therefore, with proper application of science definition, they can argue that students can infer that plants also have organs.

During my time, the common question is \"which is the largest organ - skin\". At the end of it, it is important to do as many science questions as possible and take note of such questions. (I used to do that for my kids which is why I can still remember this question)

[WS1234567]

i think it’s good to know that plants have organs too but fret not parents. Kids do not need to need to know this fact for PSLE. Check out the syllabus and you’ll know what I mean.


For PSLE, kids only need to know the parts of the human body and those in the plants that help to transport stuff aound the organism. Sometimes, school ask questions that are out of syllabus and they are unaware.

I prefer to emphasise on the process skills and answering skills to ensure good results. I know because I go for Science PSLE marking exercise. Year in year out, kids don’t do well for the same reasons.

[atutor2001]

WS1234567:

.....

I prefer to emphasise on ..... and answering skills to ensure good results...........

Hi WS1234567

This question has been bugging me for years. It goes like this :

An experiment was conducted by pouring equal amount of water into 3 identical funnels containing equal amount of 3 different types of soil. The time taken for 20 cu cm to flow through was recorded. What is the aim of the experiment?

Below are possible answers that I have come across. Which one in your opinion is the best or if none, how should the aim be crafted.

1. To find out the the time taken for 20 cu cm of water to flow through each type of soil.
2. To find out the effect of each type of soil on the time taken for 20 cu cm to flow through.
3. To find out how different types of soil will affect the time taken for 20 cu cm of water to flow through.
4. To find out the porosity of each type of soil.
5. To find out which soil is the most porous.
6. To find out which soil retains the most amount of water.
7. To find out which soil would take the longest/shortest time for 20 cu cm of water to flow through.

Thanks

[Leanne]

[Hi\"WS1234567\"]

I agreed that school papers are over testing in some areas.There is a guideline what student shoud know.Unfortunately, one has to cope with school exams, and actual psle later.So, more and extra knowledge needed for the school exams.

Just to add, school paper's questions are usually more complicated as compared to psle papers which are clearer in setting , but precise answers are really needed.

Just one cent of my thought.

Leanne

WS1234567:

i think it's good to know that plants have organs too but fret not parents. Kids do not need to need to know this fact for PSLE. Check out the syllabus and you'll know what I mean.

For PSLE, kids only need to know the parts of the human body and those in the plants that help to transport stuff aound the organism. Sometimes, school ask questions that are out of syllabus and they are unaware.

I prefer to emphasise on the process skills and answering skills to ensure good results. I know because I go for Science PSLE marking exercise. Year in year out, kids don't do well for the same reasons.

[WS1234567]

atutor2001:

WS1234567:

.....

I prefer to emphasise on ..... and answering skills to ensure good results...........

Hi WS1234567

This question has been bugging me for years. It goes like this :

An experiment was conducted by pouring equal amount of water into 3 identical funnels containing equal amount of 3 different types of soil. The time taken for 20 cu cm to flow through was recorded. What is the aim of the experiment?

Below are possible answers that I have come across. Which one in your opinion is the best or if none, how should the aim be crafted.

1. To find out the the time taken for 20 cu cm of water to flow through each type of soil.
2. To find out the effect of each type of soil on the time taken for 20 cu cm to flow through.
3. To find out how different types of soil will affect the time taken for 20 cu cm of water to flow through.
4. To find out the porosity of each type of soil.
5. To find out which soil is the most porous.
6. To find out which soil retains the most amount of water.
7. To find out which soil would take the longest/shortest time for 20 cu cm of water to flow through.

Thanks

Firstly, the terms 'porous' and 'porousity' are hardly intorduced to kids in schools. Not required to know such terms for PSLE too.
My answer would be \" To find out how well each type of soil absorbs water/ is able to retain water\".

[atutor2001]

WS1234567:

Firstly, the terms 'porous' and 'porousity' are hardly intorduced to kids in schools. Not required to know such terms for PSLE too.
My answer would be \" To find out how well each type of soil absorbs water/ is able to retain water\".

Thank you for your answer. However, would the \"timing\" part be left out? I remembered my kids' teachers ever told me to try to consider all the measurements stated in the experiment and put them in the aim. The teacher said that otherwise the coverage may not be complete. Not sure what is your opinion.