Q&A - PSLE Science

[jacz]

My DS completed PSLE last year & I have the following for sale:


(1) Science PSLE Revision Guide, By Marshall Cavendish Education
Very good condition, rarely used.
Usual $15.90, selling $10.00

(2) My Pals Are Here PSLE Science Booster Vol B, By Marshall
Tip-top condition, like new.
Usual $32.00, selling $22.00

(3) SAP PSLE Science Partner
Good condition, rarely used.
Usual $10.95, selling $6.00

Bundle Sale for all 3 @ $33.00 (Usual Price $58.85)

Price can further be negotiated.
Please email me: pegtkg@gmail.com

And a few PSLE Science, Math CDs to give away for free!








http://postimage.org/image/2sllhltpg/

http://postimage.org/image/2slosoip0/

[meimeitan]

Hi


Anyone can solve the following question:

Group X envelope and ballon
Group Y cheese and silk
Group Z thread and disposable cup

Which one of the above items is grouped incorrectedly?

The answers provided as:

(1) envelope
(2) cheese
(3) disposable cup
(4) thread

Thanks.

[mrswongtuition]

meimeitan:

Hi


Anyone can solve the following question:

Group X envelope and ballon
Group Y cheese and silk
Group Z thread and disposable cup

Which one of the above items is grouped incorrectedly?

The answers provided as:

(1) envelope
(2) cheese
(3) disposable cup
(4) thread

Thanks.

Group X: From plants
Group Y: From animals
Group Z: Manmade

My answer: Thread
However, take note that 'thread' is very vague. Thread can be silk thread, cotton thread, nylon thread, polyester thread, etc. I'm assuming it's the most common - cotton.

[meimeitan]

Hi Mrs Wong


thanks. :lol:

[tianzhu]

Hi meimeitan


You may end up with different answer depending on the grouping.

If you use natural material instead of man-made as the group heading, then disposable cup is the odd one out. That is assuming disposable cup is made of man-made material.

Is your question from past years papers?

Best wishes

[atutor2001]

tianzhu:

Hi meimeitan


You may end up with different answer depending on the grouping.

If you use natural material instead of man-made as the group heading, then disposable cup is the odd one out. That is assuming disposable cup is made of man-made material.

Is your question from past years papers?

Best wishes

I think the heading cannot be \"natural material\" because there will be overlap as \"from animal\" and \"from plant\" may also be classified as \"natural material\".

[Belle2011]

A general question here:

Where are the stomata found on the leaves of water plants? Are they still found mainly on the underside of the leaves?
WHY ?
Thank-you.

Cheers,
Belle.

[tianzhu]

Hi Belle2011


Stomata are openings in leaves which allow for gaseous exchange. For water plants like water lilies, stomata are found on the upper sides of leaves, where they are exposed to the surrounding air.

Please check with your school teacher if the topic on stomata in aquatic plants is covered in PSLE science syllabus.

Best wishes

[Belle2011]

Dear all,


How do money plants adapt themselves to grow upwards to get sunlight to carry out photosynthesis?
(a) They have woody stems
(b) They twine round supports
They have tendrils to help them climb
(d) They have roots to help them climb.

Thank-you.

Cheers,
Belle

[tianzhu]

Belle2011:

How do money plants adapt themselves to grow upwards to get sunlight to carry out photosynthesis?
(a) They have woody stems
(b) They twine round supports
(c) They have tendrils to help them climb
(d) They have roots to help them climb.

Hi

I am more inclined to go for option (d) ----- They have roots to help them climb.

Best wishes