List of top Questions asked in UP Board XII

Describe allele and multiple allele.

Explain transfer RNA in brief.

Describe the strategies for reproductive health.

Describe sterilisation in detail.

Write a short note on water pollinated plants.

Write the importance of cross pollination.

Draw a labelled diagram of T.S. of a mature dithecous anther. (described in words, as a text-only labelled description)

Write a note on biological control of pests and diseases.

Write a note on organic farming.

What is Mendelian disorder?

Write the causes of loss of biodiversity.

What is sporopollenin?

Name the gases which were used by S.L. Miller in the experiment of origin of life.

Write the names of any two biodiversity hot-spots.

What is cloning?

Which type of cell division occurs during cleavage?

Citric acid is produced by:

Which of the following is known as universal codon?

Which of the following statements explains parasitism?

Describe the life-cycle of Plasmodium with a diagram.

Write an essay on the importance of microbes in household products.

Why are transgenic animals produced? Highlight the reasons.

What is productivity? What is its importance in an ecosystem?

Describe the structure of an ecosystem in detail.

Write explanatory notes on the following: (i) Transgenic plants (ii) Transfer of recombinant DNA into host cells.