UP Board Class 12 Biology Question Paper 2025 PDF (Code 348 KI) is available for download here. The Mathematics exam was conducted on March 3, 2025 in the Morning Shift from 8:30 AM to 11:45 AM. The total marks for the theory paper are 100. Students reported the paper to be easy to moderate.
UP Board Class 12 Biology Question Paper 2025 (Code 348 KI) with Solutions
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(a) Cells of which layer of microsporanguim are binucleate?
(b) Mendel’s finding related to inheritance of characters were rediscovered by:
(c) Ti plasmid vector is used to deliver gene of interest into which of the following hosts?
(d) Which of the following is an example of commensalism?
(a) Write the names of different parts of a typical stamen.
(b) Name the hormone synthesised and secreted by Leydig cells.
(c) What are alleles?
(d) Give names of any two artificial ecosystems.
(e) Give a classical example of adaptive radiation.
(a) What is multiple allelism? Give an example.
(b) Give a brief account of different components of a nucleotide.
(c) Draw a well-labelled diagram of an antibody molecule.
(d) What is age pyramid? Give a diagrammatic representation of the age pyramid of an expanding human population.
(e) Comment upon Gause’s "competitive exclusion principle".
(a) Describe the process and importance of artificial hybridization in brief.
(b) Write a note on Intra-Uterine Devices (IUD’s) and their applications.
(c) Write a note on enzymes used in DNA replication.
(d) Describe the law of independent assortment in a dihybrid cross.
(a) Write short note on primary and secondary lymphoid organs.
(b) Describe the structure of a typical biogas plant with the help of a suitable diagram.
(c) Write short notes on the following:
(i) Vaccination
(ii) Bio-fertilizer
(d) Describe the applications of r-DNA technology in medicine.
(a) Differentiate between innate immunity and acquired immunity giving suitable examples.
(b) What are cloning vectors? Write a short note on characteristics of cloning vectors.
(c) What are transgenic animals? Describe the benefits of transgenic animals in brief.
(d) Write short notes on the following:
(i) DNA Palindrome
(ii) Carrying capacity
Briefly describe the role of hormones in follicular and luteal phase of menstrual cycle in female primates.
Briefly describe the mechanism of transcription in prokaryotes.
Give a brief account of different population growth models.
Describe in detail energy flow in an ecosystem.
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