List of top Biology Questions

Which one of the following is considered important in the development of seed habit?
A fruit developed from hypanthodium inflorescence is called
Which one of the following is a vascular cryptogam ?
Which one of the following has haplontic life cycle?
Which of the following is properly matched ?
The greatest threat to genetic diversity in agricultural crops is
Compare the statements A and B Statement A : Ranikhet disease is the disease of poultry. Statement B : It is caused by a virus. Select the correct description.
Alzheimer disease in humans is associated with the deficiency of
The given figure shows a diagrammatic sketch of a portion of human male reproductive system. Identify the parts labelled as $A$, $B$, $C$ and $D$ and select the correct option.
Compared to blood our lymph has
Which one of the following is the correct matching of the events occurring during menstrual cycle?
Which one of the following pairs of animals comprises 'jawless fishes'?
Globulins contained in human blood plasma are primarily involved in
Which one of the following is correct pairing of a body part with the kind of muscle tissue present in it?
Peripatus is a connecting link between
Uric acid is the chief nitrogenous component of the excretory products of
Given below is a schematic break-up of the phases/ stages of cell cycle. Which one of the following is the correct indication of the stage/phase in the cell cycle?
Select the incorrect statement from the following
In an experiment demonstrating the evolution of oxygen in Hydrilla, Sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favourable ?
DNA multiplication is called
A dorsal horn is present on the___________of mulberry silk worm (caterpillar).
A RBC and a plant cell (with thick cell wall) are placed in distilled water. The solute concentration is the same in both the cells . What changes would be observed in them
Nosema bombycis which causes pebrine in silk worms is a
The characteristic that is shared by urea, uric acid and ammonia is/are A. They arc nitrogenous wastes B. They all need very large amount of water for excretion C. They are all equally toxic D. They are produced in the kidneys
Damage to thymus in a child may lead to