List of top Biology Questions

Injury to vagus nerve in human is not likely to affect
In which one of the following habitats does the diurnal temperature of soil surface vary most ?
Common indicator organism of water pollution is
Which form of RNA has a structure resembling clover leaf
Lead concentration in blood is considered alarming if it is
Which of the following hormones is not a secretion product of human placenta?
The most abundant element present in the plant is :-
Which one of the following is not correctly matched
If by radiation all nitrogenase enzyme is inactivated, then there will be no
In transgenics expression of transgene in target tissue is determined by
The animals with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage, belong to the phylum
Edible part of mango is :
In which of the following pairs is the specific characteristic of a soil not correctly matched
The maximum growth rate occurs in
The most abundant element present in the plant is
Which one of the following precedes reformation of nuclear envelope during M-phase of cell cycle ?
Movement among cells against concentration gradient is called :
Recently Govt. of India has allowed mixing of alcohol in petrol. What is the amount of alcohol permitted for mixing in petrol
Which of the following is expected to have the highest value (gm/m2/yr) in a grassland ecosystem
The maximum growth rate occurs in
Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of
Lack of independent assortment of two genes-$A$ and $B$ in fruit fly-Drosophila is due to
Restriction endonucleases
Mast cells of connective tissue contain

When CO2 concentration in blood increases, breathing becomes