List of top Biology Questions asked in UP Board XII

How many meiotic divisions are required to produce 108 microspores from microspore mother cells?
The Widal test is used for the diagnosis of which disease?
The endosperm of an angiospermic plant is:
Which organ in flowers represents the female reproductive organ?
Infectious diseases
How many testis are found in the male reproductive system?
Down's syndrome occurs due to abnormality of which pair of chromosomes?
Write the name of any one contraceptive used by females.
The full form of MRI is:
Sickle Cell Anemia is an example of which type of mutation?
The development of male gametophyte occurs in which organ of the flower?
Which sugar is present in RNA?
Sperms are formed after which type of division in male germ cells?
Write down two functions of the pituitary gland.
Define Xenogamy.
Write down the names of any two sex-linked diseases in humans.
Mention the causes of cancer in humans.
Explain Allergy with examples.
Write the full form of BOD and comment on it.
Comment on productivity.
Describe the importance of Biotechnology in human welfare.
How does co-extinction damage biodiversity? Describe with example.
Highlight the importance of fungi in the production of antibiotics, with examples.
Describe the energy flow in an ecosystem with diagrams.
What do you understand by chromosomal aberrations? Describe any two aberrations.