List of top Biology Questions

Which one of the following best describe polygenic inheritance?
How macula lutea and corpus luteum are related?
Corpus callosum connects the two cerebral hemispheres. Association areas are responsible for complex functions like intersensory association of memory and communication.
A man whose father is a colourblind, marry a woman, who is a daughter of colourblind mother. The offspring of this couple will be
In a child of $15$ years age, plasma calcium level is diagnosed below optimum level. Which organ is malfunctioning?
Which of the following is a secondary pollutant
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-
Phellogen is
Companion cells are absent in the phloem of
Histogen theory was put forward by
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
Microfibrils are composed of
Which is not a characteristic feature of meristematic cells
Epidermis is produced from
Aleurone layer is present in
The condition in which anthers of all the stamens of a flower are united while filaments are free can be seen in
Correct sequence of cardiac cycle is
Which of the following is not an example of in situ conservation ?