Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
Sugar:
Thanks guys =]
we measure the volume of coloured water before and after the experiment (for both plants) and compare the differences right? Is the coloured solution gonna change the colour of the leaves? And if it is, is the colour gonna be more intensive for the plant that took in more water (with the roots)?
nid404:
--- Quote from: chocolate123 on May 18, 2009, 06:53:03 pm ---Hey
I need help with this question
1. How are the plumule and radicle of a broad bean protected as they are pushed outwards into the soil?
--- End quote ---
i dunno where u got his q from cuz its not in our syllabus. anyways the answer to this is the tip of the root contains loose cells called root cap which protect the tip from damge as it penetrates into the soil. As for the plumule since the bean seeds are dicots the epicotyl pulls plumule backwards and prevents damage. I mean it curls up. HAVE A LOOK AT THE WORD FILE ATTACHED. SHOWS THE STAGES OF GERMINATION A BROAD BEAN SEED
and sugar the color will most likely be visible. to compare color change a colorimeter can be used. It will show a higher reading with the plant with roots.
thukon:
Thanks Nid. We werent taught the mesocarp pericarp thing so it was a big help.
nid404:
k guys ill be there for bio and chem. so if u got anything to ask go ahead.
I may not come online very often when the theory papers start. But i'll help whenever i can.
aquarian93:
hey i hav two doubts nid!
dey usually ask us where in the alimentary canal, most of the fibre or roughage is..wt do we say for dat? large intestine? wts the explanation?
and the other doubt is dat,
wt is the difference in structure b/w a sensory neurone and a receptor neurone? also, do you by any chance hav pics of the two neurones, and which one is which, cuz dey ask us this q in mcqs..?
thanks a ton :)
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