List of top Biology Questions

Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicum, sweet pea, Petunia, Indigofera, mustard, soybean, tobacco and groundnut, how many plants have corolla with valvate aestivation?
A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is :
Which one of the following useful organisms is not a part in production of curd/yoghurt?
A major site for synthesis of lipids is
Global warming can be controlled by :
Syngamy can occur outside the body of the organism in
The term 'glycocalyx' is used for :
Which one of the following is not correct as regards the harmful effects of particulate matter of the size 2.5 micro meters or less ?
Kyoto Protocol was endorsed at
The plant body is thalloid in
Megaspores are produced from the megaspore mother cells after
A good producer of citric acid is
Megasporangium is equivalent to
Natural reservoir of phosphorus is
Monoecious plant of Chara shows occurrence of :
Perisperm differs from endosperm in
Satellite RNAs are present in some
The figure shows a section of human ovary. Select the option which gives the correct identification of either A or B with function/characteristic.
One of the legal methods of birth control is
A diagram showing axon terminal and synapse is given. Identify correctly at least two of A-D.
The diagram given here is the standard ECG of a normal person. The P- wave represents the :
Bundle sheath cells
Select the wrong statement :
In china rose the flowers are :
Which one of the following statements is correct ?