List of practice Questions

Select the INCORRECT statement.
In the above diagram, the blood vessel pointed ‘X’ communicates with ______________ and carries ______________ blood.
Struvite stones are derived from ______________.
The monitoring stations, established by NEERI, have reported that Kolkata and New Delhi have highest ______________ and ______________ in air respectively.
Which one of the following shows interspecific competition?
An adult man feels excessive thirst and excretes large volume of dilute urine. He may be suffering from ______________.
How many pollen grains can be produced from a dithecous tetra-locular anther with 75 microspore mother cells in each of its chamber?
Viviparous germination is seen in ______________.
Which one is used as biofertilizer in paddy fields?
During Krebs cycle, the intermediate $\alpha$-ketoglutarate is formed as a result of ______________.
In inflammatory response, A and B are released by damaged mast cells and basophils.
Hugo de Vries proposed ‘Mutation theory’ by studying the plant ______________.
The new field of biology, explored by HGP was ______________.
Which group of drugs is normally used as medicine?
The commercial hatcheries provide ______________ day old chicks for poultry practices.
A better conserver of water with respect to excretion of nitrogenous waste is ______________.
Which one of the following is a carbohydrate but does NOT follow the general formula of carbohydrate?
Reduced coenzyme FADH$_2$ is formed between which of the following intermediates in Krebs cycle?
Which one of the following shows clover leaf model?
In sickle cell anaemia, the RBCs become half moon shaped due to ______________ deficiency.
During the development of embryo sac, a megaspore mother cell undergoes ______________ meiosis and ______________ mitosis respectively.
The endodermal cells show Casparian strips made up of ______________.
Which one of the following is NOT purely a nitrogenous base?
The fungi are separated from kingdom plantae on the basis of ______________.
Entry of a pollen tube in an ovule through its micropyle during fertilization is called ______________.