List of top Biology Questions

Embryo of flowering plant is always:
A person with AB blood group:
OROS is a technology developed for/as:
After fertilization the ovule develops into:
Which of the following hepatitis-causing virus contains DNA as nucleic acid?
During the initial infection of HIV, a person experiences a brief period of:
Why is it important to have iodized salt in our diet?
Drug called 'Heroin' is synthesized by:
Which of the following acts as "nature's scavengers"
Recognize the figure and find out the correct matching.
What is antisense technology?
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
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.