chemistry bank
Thursday, July 19, 2012
Sunday, May 20, 2012
Tuesday, March 27, 2012
PLANTS HORMONES
these are also called as phyto hormones.these coordinate the activities by controlling the growth of plant.
types- AUXINS,GIBBERELLINS,CYTOKININS,ABSCISIC ACID[ABC].
AUXINS-promote cell enlargement, differentiation,fruit growth in plants.
GIBBERELLINS-these function in presence of auxins, help in breaking dormancy in seed,buds, fruits!
CYTOKININS-promote cell division,delay ageing in leaves, opening of stomata, promote fruit growth.
ABA-inhibits growth in plants,promotes closing of stomata, helps in wilting and falling of leaves![abscission].
types- AUXINS,GIBBERELLINS,CYTOKININS,ABSCISIC ACID[ABC].
AUXINS-promote cell enlargement, differentiation,fruit growth in plants.
GIBBERELLINS-these function in presence of auxins, help in breaking dormancy in seed,buds, fruits!
CYTOKININS-promote cell division,delay ageing in leaves, opening of stomata, promote fruit growth.
ABA-inhibits growth in plants,promotes closing of stomata, helps in wilting and falling of leaves![abscission].
Tuesday, November 22, 2011
peculiarity of nature!
really it is interesting to note that the gestation period in rhino is about 23 months!
Wednesday, November 2, 2011
animals have no taste sense!
it is a fact that animals don't have any sort of taste , they feed on their food merely on basis of smelling,
it is because taste melamines are absent in them!
it is because taste melamines are absent in them!
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