List of practice Questions

One of the following is a very unique feature of the mammalian body
In Arthopoda, head and thorax are often fused to form cephalothorax, but in which one of the following classes, is the body divided into head, thorax and abdomen ?
When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is
A round disc of moment of inertia $I_2$ about its axis perpendicular to its plane and passing through its centre is placed over another disc of moment of inertia $I_1$ rotating with an angular velocity $\omega$ about the same axis. The final angular velocity of the combination of discs is
The inflorescence in Ocimum is
Which of the following is a dual purpose breed?
What are X and Y in the reaction $ {{C}_{2}}{{H}_{4}}+{{H}_{2}}S{{O}_{4}}\xrightarrow{80{{\,}^{o}}C}X({{H}_{2}}O./\Delta a)Y $
If the boiling point of ethanol (molecular weight = 46) is $ \text{78}{{\,}^{\text{o}}}\text{C,} $ what is the boiling point of diethyl ether ? (molecular weight =74)
Gun metal is an alloy of:
The values of four quantum numbers of valence electron of an element are $ n=4,l=0,m=0 $ and $ s=+\frac{1}{2}. $ The element is:
The number of oxygen atoms bonded to each phosphorus atom in P$_4O_{10}$ is
In your opinion which is most effective way to conserve the plant diversity of an area
One set of a plant was grown at $12$ hours day and $12$ hours night period cycles and it flowered while in the other set night phase was interrupted by flash of light and it did not produce flower. Under which one of the following categories will you place this plant?
The most likely reason for the development of resistance against pesticides in insects damaging a crop is
Presence of gills in the tadpole of frog indicates that
Chemically hormones are
Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency
Flagella of prokaryotic and eukaryotic cells differ in
An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having
Lichens are well known combination of an alga and a fungus where fungus has
In 1984, the Bhopal gas tragedy took place because methyl isocyanate
Which one of the following pairs is not correctly matched ?
A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is
Ovulation in the human female normally takes place during the menstrual cycle
Plants adapted to low light intensity have