List of top Biology Questions asked in UP Board XII

Briefly explain the inheritance of sex-linked recessive character in humans.
Briefly explain Gause's competitive exclusion principle.
Give any two causes of biodiversity loss.
According to Allen's rule, mammals in colder climates generally have:
Testosterone hormone is secreted by:
The phenotypic ratio of a Mendelian dihybrid cross is:
Define codominance.
Write the full form of ZIFT and MTP.
Which enzyme cuts the DNA at specific site?
Comment upon the following:
Recombinant DNA Technology
Comment upon the following:
Biodiversity and its Conservation
Comment upon the following:
Apomixis
Comment upon the following:
Plasmid Vector
Describe the microsporogenesis in flowering plants with suitable diagram.
Write short notes on adaptation of desert plants and animals.
What is pollination? Write a note on the types of pollination of plants.
Describe the role of any three micro-organisms in the production of household food materials.
Draw a labelled diagram of an ovule including embryo-sac in a flowering plant.
Draw a clean and labelled diagram of the life-cycle of malaria parasite.
Write an essay on population explosion and its control measures.
Describe the semiconservative method of DNA replication with diagram.
Give an account on Biosphere Reserves and National Parks.
Comment upon any three chromosomal aberrations (syndrome) found in humans.
Define menstrual cycle. Give an account on hormonal interplay during it.
Comment upon sewage treatment.