List of top Biology Questions

Which of the following disease is now considered nearly eradicated from India?
Which one of the following is not a property of cancerous cells?
Plasmids are used as cloning vectors for which of the following reasons?
Mammals may drink water and also get it from
Artificial ecosystem are :
Is sex education necessary in schools? Why?
Mention any two autosomal genetic disorders with their symptoms.
Wind pollinated flowers are
Distinguish between
(a) Grazing food chain and detritus food chain
(b) Production and decomposition
(c) Upright and inverted pyramid
(d) Food chain and Food web
(e) Litter and detritus
(f) Primary and secondary productivity
Illustrate the taxonomical hierarchy with suitable examples of a plant and an animal.
What are transgenic bacteria? Illustrate using any one example.
Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because -
Which of the following gymnosperms is a bushy trailing shrub ?
A cell divides every minute. At this rate of division it can fill a 100 ml. of beaker in one hour. How much time does it take to fill a 50 ml beaker ?
Draw a well-labelled diagram of an antibody molecule.
Amitosis usually occurs in
The function of smooth endoplasmic reticulum
Rhizome gives rise to?
What do you think is the significance of reproductive health in a society?
What is spermatogenesis? Briefly describe the process of spermatogenesis.
The common characteristics between brinjal and wheat can be observed maximum at the level of their.
If two primary spermatocytes and two primary oocytes undergo meiosis simultaneously, what will be the ratio of spermatozoa and ova produced at the end of the gametogenesis?
R.Q. for succinic acid as respiratory substrate under aerobic condition is ___________.
Meselson and Stahl used which radio isotopes for their experiment?
Which of the following regions of the alimentary canal of man does not secrete a digestive enzyme?