Maharashtra Board Class 12 Biology Guess Paper 2027
A full practice paper on the official Biology pattern, built from the most-likely questions by repetition analysis. Not an official or leaked paper.
Maharashtra Board Class 12 Biology — Guess Paper 2027
Time: 3 hours · Maximum marks: 70 · Practice paper
Section AQ1 ten MCQs (1 mark each) and Q2 eight very short answer questions (1 mark each)
Q1.1 mark
When food is translocated from phloem to pith, it is called _____ translocation. (a) radial (b) tangential (c) upward (d) downward
Why this question: Plant Water Relation → Radial and tangential translocation — appeared 2× Board 2024Board 2026
Q2.1 mark
Identify 'A' from the graph given below showing species area relationship : [species-area relationship graph]
Why this question: Biodiversity, Conservation and Environmental Issues → Species-area relationship graph — appeared 2× Board 2024Board 2025
Q3.1 mark
Rivet Popper Hypothesis explains (a) loss of biodiversity (b) biomagnification (c) species area relationship (d) significance of diversity
Why this question: Biodiversity, Conservation and Environmental Issues → Rivet Popper Hypothesis — appeared 2× Board 2023Board 2024
Q4.1 mark
[figure of population growth curve] Choose the correct name of phases A, B and C in the given figure : (a) Stationary, Log, Lag (b) Log, Lag, Stationary (c) Log, Stationary, Lag (d) Lag, Log, Stationary
Why this question: Organisms and Populations → Phases of population growth curve — appeared 2× Board 2023Board 2024
Q5.1 mark
The microorganism used for production of beverages like wine, whisky, etc. is _____. (a) Streptomyces venezuelae (b) Saccharomyces cerevisiae (c) Aspergillus niger (d) Streptomyces griseus
Why this question: Biotechnology → Microorganism for beverage production — appeared 1× Board 2026
Q6.1 mark
Which of the following is NOT a Day Neutral Plant (DNP)? (a) Cucumber (b) Tomato (c) Cotton (d) Tobacco
Why this question: Plant Growth and Mineral Nutrition → Identify non day-neutral plant — appeared 1× Board 2026
Q7.1 mark
Flavr savr tomato is genetically modified variety for improving _____. (a) shelf life (b) disease resistance (c) iron content (d) yield
Why this question: Biotechnology → Flavr Savr tomato purpose — appeared 1× Board 2026
Q8.1 mark
A petridish containing nutrient medium shows tremendous increase in number of bacteria in short time. It is _____ growth. (a) slow (b) exponential (c) logistic (d) linear
Why this question: Organisms and Populations → Exponential growth scenario — appeared 1× Board 2026
Q9.1 mark
Weight loss, increased BMR and protruding eyeballs are the characteristics of _______. (a) Cretinism (b) Exopthalmic goitre (c) Myxodema (d) Simple goitre
Why this question: Control and Coordination → Exophthalmic goitre from symptoms — appeared 1× Board 2026
Q10.1 mark
Charas and ganja are different products obtained from ______. (a) Papaver somniferum (b) Erythroxylum coca (c) Atropa belladonna (d) Cannabis sativa
Why this question: Human Health and Diseases → Source of charas and ganja — appeared 1× Board 2026
Q11.1 mark
Name the causative agent of typhoid.
Why this question: Human Health and Diseases → Typhoid - causative agent and details — appeared 2× Board 2024Board 2026
Q12.1 mark
How many meiotic divisions are required to produce 80 male gametes in Angiosperms?
Why this question: Reproduction in Lower and Higher Plants → Meiotic divisions calculation — appeared 2× Board 2024Board 2026
Q13.1 mark
Name the process in which swelling of hydrophilic colloids occur due to adsorption of water.
Why this question: Plant Water Relation → Imbibition — appeared 2× Board 2023Board 2025
Q14.1 mark
What are Long Day Plants (LDP)?
Why this question: Plant Growth and Mineral Nutrition → Define long day plants — appeared 1× Board 2026
Q15.1 mark
Which part of human brain is responsible for maintaining body balance?
Why this question: Control and Coordination → Cerebellum maintains body balance — appeared 1× Board 2026
Q16.1 mark
What is the approximate volume of blood pumped out during one cardiac cycle in adult human?
Why this question: Respiration and Circulation → Blood volume per cardiac cycle — appeared 1× Board 2026
Q17.1 mark
Name the milk secreted by mammary gland soon after parturition.
Why this question: Reproduction in Lower and Higher Animals → Colostrum — appeared 1× Board 2026
Q18.1 mark
Give the function of Leydig's cells.
Why this question: Reproduction in Lower and Higher Animals → Function of Leydig's cells — appeared 1× Board 2026
Section BShort answer questions, 2 marks each (attempt any 8 of 12)
Q19.2 marks
Differentiate between inspiration and expiration during breathing process.
Why this question: Respiration and Circulation → Inspiration vs expiration — appeared 3× Board 2024Board 2025Board 2026
Q20.2 marks
Match the following from Column-A and Column-B. Write the correct pairs. Column A: (i) Anaemia (ii) Atherosclerosis (iii) Parturition (iv) Blood clots (v) Cancer (vi) Diabetes. Column B: (1) Platelet derived growth factor (2) Relaxin (3) Insulin (4) Erythropoietin (5) Tissue plasminogen activator (TPA) (6) Interferons, tumour necrosis factor interleukins.
Why this question: Biotechnology → Recombinant human proteins used to treat diseases — appeared 3× Board 2023Board 2025Board 2026
Q21.2 marks
With the help of a labelled diagram, describe the structure of root-hair.
Why this question: Plant Water Relation → Root hair structure diagram — appeared 3× Board 2023Board 2025Board 2026
Q22.2 marks
Give the skeletal features of Homo erectus.
Why this question: Origin and Evolution of Life → Skeletal features of Homo erectus — appeared 2× Board 2026
Q23.2 marks
Sketch and label the Graafian follicle showing theca externa, antrum and corona radiata.
Why this question: Reproduction in Lower and Higher Animals → Graafian follicle diagram — appeared 2× Board 2025Board 2026
Q24.2 marks
Match the respiratory surface to the organism in which it is found : Organisms: (1) Limulus (2) Protists (3) Tadpoles of frog (4) Fishes (5) Reptiles (6) Spiders. Respiratory surface/organs: (a) Lungs (b) Internal gills (c) Book lungs (d) External gills (e) Plasma membrane (f) Book gills (g) Cloaca.
Why this question: Respiration and Circulation → Respiratory organs/surfaces of organisms — appeared 2× Board 2024Board 2026
Q25.2 marks
(a) What is DNA profiling? (b) Arrange the following steps of DNA profiling in correct sequence: (i) Selection of DNA probe (ii) Isolation of DNA (iii) Gel electrophoresis (iv) Hybridization (v) Southern blotting (vi) Restriction digestion
Why this question: Biotechnology → Steps of DNA fingerprinting/profiling — appeared 2× Board 2024Board 2026
Q26.2 marks
Mention any four factors affecting water absorption.
Why this question: Plant Water Relation → Factors affecting water absorption — appeared 2× Board 2024Board 2026
Section CShort answer questions, 3 marks each (attempt any 8 of 12)
Q27.3 marks
Explain leaching, humification and mineralization as the steps of decomposition process.
Why this question: Ecosystems and Energy Flow → Steps of decomposition — appeared 3× Board 2024Board 2025Board 2026
Q28.3 marks
Give location and function of any four valves present in human heart.
Why this question: Respiration and Circulation → Valves of the human heart — appeared 2× Board 2025Board 2026
Q29.3 marks
(a) Enlist any four mineral deficiency symptoms seen in plants. (b) Give the function of molybdenum as mineral nutrient.
Why this question: Plant Growth and Mineral Nutrition → Deficiency symptoms of mineral elements — appeared 2× Board 2025Board 2026
Q30.3 marks
Explain nuclear and helobial type of endosperm with suitable examples.
Why this question: Reproduction in Lower and Higher Plants → Endosperm and its types — appeared 2× Board 2025Board 2026
Q31.3 marks
With the help of labelled diagram describe the structure of human sperm.
Why this question: Reproduction in Lower and Higher Animals → Structure of human sperm — appeared 2× Board 2025Board 2026
Q32.3 marks
What is transpiration? Explain stomatal opening and closing mechanism with reference to starch-sugar interconversion theory.
Why this question: Plant Water Relation → Mechanism of stomatal opening and closing — appeared 2× Board 2024Board 2026
Q33.3 marks
Enlist the names of VI, VII, VIII and IX cranial nerves.
Why this question: Control and Coordination → Names and types of specified cranial nerves — appeared 2× Board 2024Board 2026
Q34.3 marks
Define : (a) Siphonogamy (b) Parthenocarpy (c) Polyembryony
Why this question: Reproduction in Lower and Higher Plants → Define reproduction terms (apomixis, polyembryony, parthenocarpy) — appeared 2× Board 2024Board 2026
Section DLong answer questions, 4 marks each (attempt any 3 of 5)
Q35.4 marks
Write any three characters each of Archaeopteryx showing Reptilian and Avian features.
Why this question: Origin and Evolution of Life → Archaeopteryx as connecting link — appeared 2× Board 2023Board 2026
Q36.4 marks
(a) Give the composition of biogas. (b) Enlist the benefits of biogas.
Why this question: Enhancement in Food Production → Composition and benefits of biogas — appeared 2× Board 2023Board 2026
Q37.4 marks
Mention any six symptoms of disorder caused by trisomy of 21st chromosome.
Why this question: Inheritance and Variation → Down syndrome (trisomy 21) — appeared 2× Board 2024Board 2025