List of top Questions asked in UP Board XII- 2026

What is the length of DNA in a typical nucleosome?

Explain Frame shift mutation with an example.

Name the type of food chain which begins with dead organic matter.

Write a note on photosynthetically active radiation.

Which of the following is an initiation codon?

Name any two plants in which multicarpellary syncarpous gynoecium is found.

Write the full form of ZIFT.

Lichen is an example of which of the following type of population interactions?

Which of the following is needed in recombinant DNA technology?

Which of the following is a water pollinated plant?

What is an ecological pyramid? Describe different types of ecological pyramid with diagram.

Describe Mendel's law of one gene (monohybrid) inheritance.

Describe chromosomal aberration with examples.

Write explanatory notes on the following: (i) Water pollination (ii) Polyembryony.

Write an essay on population interactions.

Give a diagrammatic presentation of the stages in the life cycle of Plasmodium in human.

Write a note on lymphocytes.

Write a descriptive note on BOD.

What is oogenesis? Describe the process of oogenesis with diagram.

Distinguish between convergent evolution and divergent evolution.

Write a short note on biopiracy.

Write the importance of species diversity in an ecosystem.

Comment upon biological evolution.

Draw a ray diagram (flow chart) of energy flow in an ecosystem.

Write the name of any one water pollinated plant.