List of top Biology Questions

Which one of the following statements is not correct?
In which one of the following processes CO2 is not released?
The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as:
Pollen tablets are available in the market for:
What gases are produced in anaerobic sludge digesters?
Placenta and pericarp are both edible portions in :
At which stage of HIV infection does one usually show symptoms of AIDS?
An analysis of chromosomal DNA using the southern hybridisation technique does not use:
Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of:
Which one of the following are analogous structures?
Commonly used vectors for human genome sequencing are:
Which structures perform the function of mitochondria in bacteria?
Which vector can clone only a small fragment of DNA?
The zone of atmosphere in which the ozone layer is present is called:
Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to:
An example of ex situ conservation is:
Fruit colour in squash is an example of:
Match the following and select the correct option:
(a)Earthworm(i)Pioneer species
(b)Succession(ii)Detritivore
(c)Ecosystem service(iii)Natality
(d)Population growth(iv)Pollination
In vitro clonal propagation in plants is characterized by:
Stimulation of a muscle fibre by a motor neuron occurs at
The main function of mammalian corpus luteum is to produce:
To obtain virus-free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?
Which one of the following shows isogamy with non-flagellated gametes?
Person with blood group AB is considered as universal recipient because he has:
The initial step in the digestion of milk in humans is carried out by?