Q&A - P3 Science

[corneyAmber]

Champion:

Nebbermind:

think in P3 science, mollies, swordtails and guppies are typcially used as examples of fish that give birth to young alive.

Yea, I remember I read that in the guide book too...

Thanks to so many of you for confirming the right literature, which means the past yr exam question was set wrongly as the answer was swordtail fish laid eggs.

[teh_oh]

http://i53.tinypic.com/208jjhs.jpg\">

(a) Child's Ans: It is oval-shaped and is a simple leaf
Ans Key: The leaf is oval in shap and has a jagged edge.
Query: Is the child's answer acceptable? Are 'simple/compound leaf' description consider as 'characteristics of leaves'?

http://i55.tinypic.com/6ht4dj.jpg\">
(b) Child's Ans: Yes. Because both plants are flowering plants.
Ans Key: Yes, as the hibiscus (leaf) has jagged edge.
Query: Is the child's answer acceptable? Or the child is expected to know that the question is asking for similar leaf groups as Question (a) is asking for characteristics of leaf?

http://i55.tinypic.com/2v9er84.jpg\">
http://i52.tinypic.com/s6q6ab.jpg\">
(a) Child's Ans: Group A -> M, N, P; Group B->O
Ans Key: Group A ->M, P; Group B-> N, O
(b) Child's Ans: Group A -> Simple leaves; Group B->Compound leaves
Ans Key: Group A ->Jagged edge; Group B-> Entire edge
(c) Child's Ans: Group A. Because it is a simple leaf and the leaves in Group A are simple leaves.
Ans Key: Group B. It has entire edge.
Query: Is child's answer acceptable?

:thankyou:

[teh_oh]

Hi,

I am hoping to find out if my child’s sentence answer is correctly worded:-

Q: Can the snake be placed in the classification chart above? Explain your answer.

A: Child’s Ans: No. It has no legs.
Ans Key: No. It does not have any legs.

"It has no legs", is it a correct sentence from an English point of view (although meaning is same).

[usaik]

teh_oh:

Hi,

I am hoping to find out if my child's sentence answer is correctly worded:-

Q: Can the snake be placed in the classification chart above? Explain your answer.

A: Child's Ans: No. It has no legs.
Ans Key: No. It does not have any legs.

\"It has no legs\", is it a correct sentence from an English point of view (although meaning is same).

If he is giving this as an answer to his Science paper, I think the teacher will mark it as correct. For Science paper, the teacher will not be looking out for grammar or spelling error (provided the word is still recognizable and not spelt as another word).

[bookwormkids]

teh_oh:

shirley.tamzil:

Need help with the following question:


Tommy spread a layer of wax on different parts of four similiar plants A, B, C and D as stated below. The was prevents the plants from exchanging gases with the surroundings.

Part of plant where wax is applied:
Plant A - Upper surface of leaves
Plant B - Stem
Plant C - Lower surface of leaves
Plant D - Upper and lower surface of leaves.

He watered the plants daily and placed them beside a sunny window. After a week, he noticed that two of the plants wilted first. Which of the following are most likely to be the two plants?

1. A and B
2. A and C
3. A and D
4. C and D

Hi,
Is this P3 Question?
Is the answer 3?

This is question from P4 Sample Exam Paper, DS answered 3, but answer sheet says 4. :?
Anyone can confirm the answer?[/quote]
Hi,
Sorry for embarrassing myself here. My child is only in P3. :oops:
I did a quick search on the internet and read about plants using stomata to breathe. These stomata are shown to be on the underside of the leaf (http://www.saburchill.com/chapters/chap0025.html). Maybe that is why the answer key is 4.
Hope someone can help us.
On a side note, won't the wax interfere with photosynthesis and kill the plants too?[/quote]

Hi! Answer is 4 (C&D). My P4 kid's answer:

Plants use leaves to exchange gases with the surrounding. Stomata are found on leaves and most of them are found on the underside of leaves. Thus, if wax is applied on the upper & lower side of the leaves, the leaves will not be able to \"breathe\" or exchange gases or photosynthesize. The plant will wilt and die eventually.

HTH.

[teh_oh]

usaik:

teh_oh:

Hi,

I am hoping to find out if my child's sentence answer is correctly worded:-

Q: Can the snake be placed in the classification chart above? Explain your answer.

A: Child's Ans: No. It has no legs.
Ans Key: No. It does not have any legs.

\"It has no legs\", is it a correct sentence from an English point of view (although meaning is same).

If he is giving this as an answer to his Science paper, I think the teacher will mark it as correct. For Science paper, the teacher will not be looking out for grammar or spelling error (provided the word is still recognizable and not spelt as another word).

hi usaik,
:thankyou:

[Niedino]

teh_oh:

Hi,

I am hoping to find out if my child's sentence answer is correctly worded:-

Q: Can the snake be placed in the classification chart above? Explain your answer.

A: Child's Ans: No. It has no legs.
Ans Key: No. It does not have any legs.

\"It has no legs\", is it a correct sentence from an English point of view (although meaning is same).

Hi teh_oh,

Yes, the answer is correct, but a better answer would be to include a comparison, e.g. It does not have legs, unlike the animals in the box.

The skill of comparing is tested in this question, so it would be good if your child can put it into the answer. Hope it helps!

[teh_oh]

Niedino:

teh_oh:

Hi,

I am hoping to find out if my child's sentence answer is correctly worded:-

Q: Can the snake be placed in the classification chart above? Explain your answer.

A: Child's Ans: No. It has no legs.
Ans Key: No. It does not have any legs.

\"It has no legs\", is it a correct sentence from an English point of view (although meaning is same).

Hi teh_oh,

Yes, the answer is correct, but a better answer would be to include a comparison, e.g. It does not have legs, unlike the animals in the box.

The skill of comparing is tested in this question, so it would be good if your child can put it into the answer. Hope it helps!

Hi Niedino,
:thankyou: too.
Thanks for suggesting to use 'unlike'. Although I overlooked the comparison technique in the above question (because it looked so straightforward!), our typical comparison answer technique is 1. to state characteristics of Group; 2. state characteristics of subject; 3. state why.
ie. No. Animals in Group X has legs. The snake does not have legs so it cannot be placed in the chart above. (grandmother story....)

[Niedino]

bookwormkids:

teh_oh:

[quote=\"shirley.tamzil\"]Need help with the following question:


Tommy spread a layer of wax on different parts of four similiar plants A, B, C and D as stated below. The was prevents the plants from exchanging gases with the surroundings.

Part of plant where wax is applied:
Plant A - Upper surface of leaves
Plant B - Stem
Plant C - Lower surface of leaves
Plant D - Upper and lower surface of leaves.

He watered the plants daily and placed them beside a sunny window. After a week, he noticed that two of the plants wilted first. Which of the following are most likely to be the two plants?

1. A and B
2. A and C
3. A and D
4. C and D

Hi,
Is this P3 Question?
Is the answer 3?

This is question from P4 Sample Exam Paper, DS answered 3, but answer sheet says 4. :?
Anyone can confirm the answer?[/quote]Hi,
Sorry for embarrassing myself here. My child is only in P3. :oops:
I did a quick search on the internet and read about plants using stomata to breathe. These stomata are shown to be on the underside of the leaf (http://www.saburchill.com/chapters/chap0025.html). Maybe that is why the answer key is 4.
Hope someone can help us.
On a side note, won't the wax interfere with photosynthesis and kill the plants too?[/quote]

Hi! Answer is 4 (C&D). My P4 kid's answer:

Plants use leaves to exchange gases with the surrounding. Stomata are found on leaves and most of them are found on the underside of leaves. Thus, if wax is applied on the upper & lower side of the leaves, the leaves will not be able to \"breathe\" or exchange gases or photosynthesize. The plant will wilt and die eventually.

HTH. :)[/quote]

Hi,

For the first question, the answer should be 4, as most of the stomata are found on the underside of the leaves. Hence, if the lower surface is coated with wax, the plant is unable to exchange gases for respiration and photosynthesis.

However, please take note that we do not use the word 'breathe' for plants. If you were to use a dictionary definition, breathing involves the inhaling and exhaling of air through the 'lungs'. Plants have no lungs, so technically, they do not breathe. Often pupils who put 'plants breathe' will get penalised. The best words to use are 'exchange gases' or 'respire'

[teh_oh]

Hi all,

Just to vent...
For a certain question that involved keeping a hamster in a cage without sufficient food and water, resulting in the death of the rodent in a few days time, a question was asked to state reason. My child's answer:
\"The hamster does not have enough food and water, so it eventually starved to death.\"
No full marks awarded.

For a different question to state why a mushroom is not a plant, my child's answer:
\"A plant can make food by itself while a mushroom feeds on other organism.\"
No full marks awarded too.

:frustrated: