Home

**[[file:blood group.ppt]] __Animaton on phagocytosis__**
This is the video which by phagocytes move around to ingest the bacteria.

__**Announcement to 3Faith and 3Devotion (14 Aug)**__
1) As quite a number of the Bio lessons has been eaten up by common test (esp for 3F) and national day holi, I did not have time to go through all the answers for the practical and worksheets.

2) Pls check through the attached answers and do your corrections, revising for your common test at the same time. All the important note has been highlighted in Red. Pls read thru'.

3) File check by Mr Chandra. Pls do all corrections by then. 3D - next fri (21 Aug) 3F - next wed (19 Aug) 4) Consultation on Monday, 16 Aug (2.00-4.00pm) Pls grab me at the staffroom if u have any questions regarding any of the tested topics.

I didnt manage to return the pratical on Transport in Plant (viewing of slide on stems and roots) and also the Worksheet on 'Nturtiton in plants' on fri (14Aug). My deepest apology! Tried going to your classroom after dismissal time on fri, but i was too slow..many left.. Do check out all the uploaded answers to help you with the revision. I will return all the worksheets on monday.
 * __5) Specially to 3 Faith__**

Aphids, carbon 14 isotopes, ringing experiment
 * __Experiments showing translocation__**



=
I have inlcuded some additional comments on common mistakes made and also how to answer biology questions, so as to score points! I can see that many of you know the process when asked, just that the way you wrote your answers is not precise enough. But dont worry, you would get a hang of it after a while. :)======

[[file:3D_Factors affecting transpiration_modified compressed 03 Aug 09.ppt]]
check this out! []

=
(Note: some of you guys are confused regarding how transpiration pull is being established - //As water diffuese out of the mesophyll cells to replace the thin film of moisture surrounding the mesophyll cell surfaces, water from the xylem will be drawn out to replace the water lost by the mesophyll cells. As water is continuously drawn out, cohesion forces would pull the water molecules up the xylem vessels, resulting in the transpiration pull)//======

=
Dear guys and gals, Pls note that slide 11 of the slide on "structure of phloem and xylem" is a wrongly labeled diagram. I have reattached the file as below. Alternatively, You can also just down load this particular slide======

[[file:transport_in_plants_slide 11.ppt]]
__**Structure of phloem and xylem**__

__**Structures of leaves**__