Q&A - P3 Science

[AgonyMum]

Can someone help with this P3 Science question about Insects-


Qn: At the end of each jointed leg of an insect is a tiny ______________.

[plum-cake]

tiny claws.

http://www.cals.ncsu.edu/course/ent425/tutorial/legs.html

[AgonyMum]

Thank you very much plum-cake

[teh_oh]

tianzhu:

Lynn2:

Hi Tianzhu


While me and my girl was going thr question from http://www.wendykoh.com/08primary4-chijca2-science.pdf

question 3,which part of the egg provide food for the developing chick?

Answer is 3
But my girl answer is 1.

Wonder is there any mistake?thanks

Hi
Your girl is correct.
The yolk provides the developing embryo with nutrients.

Hi tianzhu,

Need clarifications if the above is indeed yolk or white as PSLE Ultimate Science Guide (EPH) Page 156, 157 states that the egg white is a food store for the developing chick made up of protein, water, vitamins and minerals. It is gradually used up throughout incubation. While yolk is also a food store, but unlike the albumen (egg white), it is not consumed during incubation.......used as a food reserved for the first few days of a chick's life outside the egg. The yolk is absorbed into the abdomen of the chick just before hatching.

Thanks.

[tianzhu]

Hi teh_oh


The link to the original question is broken, and I cannot remember how the original question is worded.

Perhaps, you may want to read the second paragraph from this link.

http://lhsfoss.org/fossweb/teachers/materials/plantanimal/chickeneggs.html

Best wishes

[teh_oh]

tianzhu:

Hi teh_oh


The link to the original question is broken, and I cannot remember how the original question is worded.

Perhaps, you may want to read the second paragraph from this link.

http://lhsfoss.org/fossweb/teachers/materials/plantanimal/chickeneggs.html

Best wishes

Hi tianzhu,

Thanks for your replies and the link.
So, embryo do get their nutrients/food source from the egg yolk.
If so, then it is very misleading for PSLE Ultimate Science to state as what I quoted in the earlier post.
My child has clarified with his teacher today and was told that while she understands that some guidebooks state egg white as the food source, it should actually be egg yolk as the main function of egg white is to cushion shock.

Thank you again for your clarifications.

Regards.

[tianzhu]

Hi teh_oh


You may wish to write to the publisher for clarification.

They(publishers) are usually very helpful.

Best wishes

[AgonyMum]

Hi,are these answers correct?


1.Leaf of money plant - round?
Flowers grow in clusters?
2.Leaf of sunflower - heart?
3.Leaf of orchid - lance?
4.Leaf of ixora - lance?

Is there a good website or good Science guidebook to find out all these shapes of leaves plus singly/clusters stuff?

Thanks!

[HAPPYH]

I saw in one of the assessment books - can’t remember which one


ixora - oval shaped

orchid and grass - lance shaped

Not sure about the rest.

[mother777]

may be try the link below. has lot of information about leaves..

http://www.smccd.net/accounts/leddy/syllabus.htm