person having maize ap the staple food develop the symptoms of :
a)beri beri
b)pellagra
c)night blindness
d)anemia
which of the following vitamin is essential for DNA synthesis and CELL DIVISON:
a)vitamin e
b)folic acid
c)vitamin c
d)vitamin a
sulpha drugs are antibacterial and prevent the synthesis of folic acid.This type of enzymatic inhibition is:
a)allostearic inhibition
b)competitive inhibition
c)non competitive inhibition
d)none of these
an example of competitive inhibition of an enzyme is the inhibition of :
a)succinic dehydrogenase by malonic acid
b)cytochrome oxidase by cyanide
c)hexokinase by glucose 6 phosphate
d)carbonic anhydrase by carbon dioxide
androcyte of riccia form
a)many uniflagellate spermatozoid
b)one uniflagellate spermatozoid
c)a biflagellate antherozoid
d)many biflagellate antherozoid
which of the following is not a characteristic of regeneration:
a)it occurs in larva and adult
b)it involves dedifferentiation of cells
c)it prevents ageing
d)it is influenced by nerves and hormones
artificial system of classification was given by
a)engler and prantl
b)bentham & hooker
c)bessey
d)leeuwenhoek
which of the following movements are shown by antherozoids of moss?
a)thermotactic
b)chemotactic
c)phototactic
d)autotactic
peristome of moss capsule has
a)16 teeth
b)32 teeth
c)30 teeth
d)23 teeth
gemmae are seen in
a)riccia
b)marchantia
c)funaria
d)moss
reproductive organs are developed on Marchantia plant
a)under all condition
b)under moist condition only
c)under special environmental condition
d)never in life cycle
