List of top Biology Questions

Which of the following is a secondary pollutant ?
Pick out the wrong statement
Tasar silkworm feeds on the leaves of
Respiratory organs of Cockroach are called-
Companion cells are absent in the phloem of
Histogen theory was put forward by
Phellogen is
Ammonia is converted into urea during ornithine cycle in
Restriction endonucleases are most widely used in recombinant DNA technology. They are obtained from
Interconnected flattened sacs of endoplasmic reticulum are called
Hypertonic urine formation is characteristic of kidneys of
Haemophilia is an example of
Epidermis is produced from
Microfibrils are composed of
Which is not a characteristic feature of meristematic cells
The condition in which anthers of all the stamens of a flower are united while filaments are free can be seen in
Aleurone layer is present in
Correct sequence of cardiac cycle is
Which of the following is not an example of in situ conservation ?
Which of the following disease is cause by virus?
Vegetative propagation in water hyacinth takes place by
The organ of corti is situated on the
The drug marijuana is obtained from
The correct sequence of seral stages in hydrosere is
The commonly found tissue in pulp of fruits like guava and in leaves of tea are