List of top Questions asked in UP Board XII

Genetic substance of virus is:
The number of chromosomes in male drone of honeybee is:
Congenital metabolic disorder is:
What is the function of Sertoli cells in human testes?
Write the zoological name of the causative agent of Filaria disease.
Choose the correct option and write in your answer-book :
The cells of endosperm are:
Explain the back cross and test cross.
Describe the structure of seminiferous tubule.
Describe infectious diseases with examples.
Describe the importance of seed and fruit development.
Describe the contribution of biotechnology in agriculture.
Write a short note on Mendelism.
Write notes on the following: Ringworm, Amoebiasis
Explain symbiosis with suitable examples.
When a cross is made between a tall plant with yellow seed (TtYy) and a tall plant with green seed (Ttyy), in what proportion of the following phenotypes could be expected?
Write a note on National Park.
Describe the development of the male gametophyte of an angiospermic plant with a suitable diagram.
How does fertilization take place in an angiospermic plant? Describe post-fertilization structures and events.
Characteristic features of the structure of double-stranded DNA.
Components of an ecosystem.
Human ovum.
Answer the following questions briefly: Genetically Modified (GM) Crops
Describe the dihybrid cross with a diagram.
Components of a Nucleotide
In-situ Conservation