MH Board Class 12 Biology Question Paper 2025 PDF is available for download here. The paper covered plant and animal physiology, genetics, and ecology, totaling 80 marks. Students found the paper balanced with straightforward theoretical questions.
MH Board Class 12 Biology 2025 Question Paper with Answer Key PDF
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MH Board Class 12 Biology 2025 Question Paper with Solutions
Identify the growth hormone in plants which causes inhibitory effect.
Which one of the following is not a part of lac operon?
In absence of fertilization, corpus luteum degenerates into ______.
Which of the following divides nasal cavity?
Which of the following is caused by unsterilized needle?
Recognition sequence of restriction enzymes are generally _______ nucleotides long.
Which of the following types require pollinator but result is genetically similar to autogamy?
Which one of the following does not evolve further?
Identify the appropriate term for the number of births under ideal conditions :
Observe the graph and select correct option :
What are vestigeal organs?
Expand the term ZIFT.
Give the name of endocrine gland which is prominent at birth but gets gradually atrophied in adult stage.
What is the full form of IAA?
Give the name of microbial source of antibiotic chloromycetin.
Which cells of islets of Langerhans produce a hormone insulin?
How many meiotic divisions are required for the formation of 300 seeds in angiosperm?
Explain the term Emigration.
What are the reasons for the success of Mendel?
Arrange the following steps of DNA fingerprinting in correct sequence :
Distinguish between human sperm and ovum.
Enlist the uses of gene therapy.
Define the following terms : (a) Gene flow (b) Chromosomal aberrations
What are the significances of double fertilization?
Identify and define 'A' and 'B' in relation to uptake of water by the root :
Describe mutualism.
Explain factors affecting water absorption.
What is differentiation and redifferentiation?
Select and rewrite appropriate disorder of respiratory system with the given symptoms :
[ sinusitis, emphysema, silicosis and asbestosis, laryngitis ]
Explain the steps involved in preliminary treatment of sewage.
Give the different steps involved in formation of m-RNA from hn-RNA.
What is reproductive isolation? Describe any two types each of pre-mating and post-mating isolating mechanism.
Explain unique features of acquired immunity.
Name and describe hormones secreted by ovaries.
Explain different steps involved in PCR technique.
What are the limitations of root pressure theory?
Explain green house effect with reference to gases responsible for it and their sources.
Describe physiological effects and applications of ethylene.
Give the name and type of I, IV and VII cranial nerves.
Describe pyramid of energy with the help of diagram.
What is lac? Enlist economic importance of Lac.
Describe histological structure of Testis with well labelled diagram.
What are chromosomal disorders? Describe Turner's syndrome and Klinefelter's syndrome.
Describe nervous system in planaria with well labelled diagram.
Explain following terms :
(a) Grafting (b) Apomixis (c) Polyembryony (d) Parthenocarpy
Interpret the given diagrams A and B. Enlist the changes occurring during inspiration and expiration.
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