Q&A - P3 Science

[ParentingChildren]

teh_oh:

Hi Tianzhu,
Thanks for replying.
I am really confused about this question because the first 'experiment' in My Pals' Activity book (i.e. school's 'workbook' Activity 2.2 - Do plants move by themselves?) is this similar experiment (only 1 potted plant though) and under Conclusion, there is three line:-
1. Plants cannot move from place to place on their own.
2. Plants respond to changes around them by moving some of heir plant parts.
3. Some plant parts grow towards the direction of sunlight.

Hence we directly relate such experiment to one that tries to prove that 'plants respond to changes'.

I would think that the better answer is 2 and not 4.

The conclusion that \"Plant needs sunlight to make food\" (option 4) does not come from the result of the experiment. You would probably need a starch test done on 2 different plants (one under sunlight and one kept in the dark) to prove that plants need sunlight to make food.

The plant is responding to the light coming from the opening of the box and hence the conclusion that \"Plant can respond to changes\" is better.

[tianzhu]

Hi teh_oh


I apologise for leading you to the wrong direction.

The better answer is option (2).

Best wishes

[teh_oh]

tianzhu:

Hi teh_oh


I apologise for leading you to the wrong direction.

The better answer is option (2).

Best wishes

Hi Tianzhu,
No apologies needed.
I always look forward to your replies.
Have a nice weekend.

[teh_oh]

ParentingChildren:

teh_oh:

Hi Tianzhu,
Thanks for replying.
I am really confused about this question because the first 'experiment' in My Pals' Activity book (i.e. school's 'workbook' Activity 2.2 - Do plants move by themselves?) is this similar experiment (only 1 potted plant though) and under Conclusion, there is three line:-
1. Plants cannot move from place to place on their own.
2. Plants respond to changes around them by moving some of heir plant parts.
3. Some plant parts grow towards the direction of sunlight.

Hence we directly relate such experiment to one that tries to prove that 'plants respond to changes'.

I would think that the better answer is 2 and not 4.

The conclusion that \"Plant needs sunlight to make food\" (option 4) does not come from the result of the experiment. You would probably need a starch test done on 2 different plants (one under sunlight and one kept in the dark) to prove that plants need sunlight to make food.

The plant is responding to the light coming from the opening of the box and hence the conclusion that \"Plant can respond to changes\" is better.

Hi ParentingChildren,
Thanks for your replies.
Science is really so tricky.

[24hr-mum]

i let my girl try sci ca paper at home. she got only 8/15 correct for mcq questions. got me worried. is it normal for p3 1st sci ca attempt for a child to do badly?

[teh_oh]

24hr-mum:

i let my girl try sci ca paper at home. she got only 8/15 correct for mcq questions. got me worried. is it normal for p3 1st sci ca attempt for a child to do badly?

Hi,
You have to check if her school has covered the relevant topics that is similar to the past year CA papers from other schools. My child's school is only testing up to Plants; so he is using 'guesswork/common sense' for those questions pertaining to Animals and Micro-organisms.

[kiasuboy]

Teachers always use green beans,soaked with water in a cotton bud in an experiment. May I ask how do green bean come from?Is it from bushes, trees,or others?

[atutor2001]

kiasuboy:

Teachers always use green beans,soaked with water in a cotton bud in an experiment. May I ask how do green bean come from?Is it from bushes, trees,or others?

You very cute. Green beans are found inside pods (black in colour). The green bean plant is a creeper (weak stem that needs to climb onto support such as fence). So you need to break open the pods to see the green beans inside it (something like groundnut)

[Charnic]

The question goes like this. The heading is "Animals that reproduce by laying eggs" Then it has group X and Group Y. Animals in group X consist of Frog, Housefly and butterfly. As for Group Y, they have chicken, cockroach and crocodile. So they ask which of the following group of animals are correctly classify in group X and Y


A) Mosquito and Pigeon
B) Grasshopper and Snake

Answer is A but why ? Pls kindly advise urgently. Thanks a ton.

[Happy Mama]

atutor2001:

kiasuboy:

Teachers always use green beans,soaked with water in a cotton bud in an experiment. May I ask how do green bean come from?Is it from bushes, trees,or others?

You very cute. Green beans are found inside pods (black in colour). The green bean plant is a creeper (weak stem that needs to climb onto support such as fence). So you need to break open the pods to see the green beans inside it (something like groundnut)

Hi atutor2001, the green bean plant we grew at home recently didnt creeep nor twine. It grew upright to a height of about 30 cm and started producing pods containing green beans.