List of top Biology Questions

What is Biotechnology? Describe its various applications.
Write an essay on the role of microorganisms in human welfare.
Write short notes on the following: (i) Placenta formation
(ii) Red Data Book
What is biodiversity? Add a note on its conservation.
Write an essay on genetic code.
Write short notes on the following: (i) Polyembryony
(ii) Formation of Fruit
Describe the human male reproductive system with suitable diagram.
Draw only a clean & labelled diagram of the life-cycle of malaria parasite.
Distinguish between the following:
(i) Population and Community
(ii) Hibernation and Aestivation
Explain briefly the Polymerase Chain Reaction (PCR).
Comment briefly upon the contribution of Mendel.
Define parthenogenesis. Describe the mechanism of sex determination in honeybees.
What is genetic engineering? Write down two applications of genetic engineering in the field of health.
What is ascariasis? Mention its prevention and treatment in short.
Write any three differences between DNA and RNA.
Comment upon human insulin.
How do biofertilizers increase the fertility of the soil?
What is double fertilization in plants? Who discovered it?
Write short note on adaptations of desert plants and animals.
How many chromosomes are found in Turner and Klinefelter syndromes?
Explain the Mendel's Law of Segregation.
Draw only a labelled diagram of DNA double helix model as proposed by Watson and Crick.
Write the name of any one sexually transmitted disease and describe its control measures.
What are the functions of Leydig cells?
In humans, which type of chromosomes are responsible for sex determination?