MH 12th Question Paper June 2026 Biology

FOR MAHARASHTRA BOARD (MSBSHSE) CLASS 12 EXAM PREPARATION

Maharashtra Board
(MSBSHSE) Class 12
2026
June Session Question
Paper · Biology
EXAM YEAR

Maharashtra Board (MSBSHSE) Class 12 2026
TYPE SUBJECT

June Session Question Paper Biology

Notes · Sample Papers · Previous Year Papers · Mock Tests

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Page No. 1/7 Subject Code J-297 a

Page No. 1/7 Subject Code J-297 Seat No.

DATE : 27/06/2026 E
SUBJECT : BIOLOGY (56)
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Time : 11.00 - 2.00

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DURATION : 3 Hours. c s e
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General Instructions :
The question paper is divided into four sections.
(i) Section A : Q. No. 1 contains Ten multiple choice type of questions
carrying one mark each. Evaluation will be done for the
first attempt only.
Q. No. 2 Contains Eight very short answer type of
questions carrying one mark each.
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(ii) Section B : .co
Q. No. 3 to 14 are short answer type of questions carrying

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two marks each. (Attempt any Eight)
(iii)
g a short answer type of questions carrying
Section C : Q. No. 15 to 26 lare
three marks a each. (Attempt any Eight)
(iv) Section D : Q. No. 27 to 31 are long answer type of questions carrying
four marks each. (Attempt any Three)
(v) Begin the answer of each section on a new page.

SECTION – A m
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Q. 1.
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Select and write the correct answer for the following multiple 10

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choice type of questions :
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a (i) The microorganism used for production of beverages like wine,
whisky, etc. is _____.
(a) Streptomyces venezuelae (b) Saccharomyces cerevisiae
(c) Aspergillus niger (d) Streptomyces griseus

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Page No. 2/7 Subject Code J-297
(ii) Which of the following is NOT a Day Neutral Plant (DNP)?
(a) Cucumber (b) Tomato
(c) Cotton (d) Tobacco

(iii) When food is translocated from phloem to pith, it is called _____
translocation.
(a) radial (b) tangential
(c) upward (d) downward

(iv) Extinction of a host fish leads to extinction of unique parasites
of it. This is an example of ________ .
(a) Over exploitation (b) Invasion of alien species
(c) Co-extinction (d) Habitat loss

(v) Flavr savr tomato is genetically modified variety for improving
_____.
(a) shelf life (b) disease resistance
(c) iron content (d) yield

(vi) 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

(vii) Weight loss, increased BMR and protruding eyeballs are the
characteristics of _______.
(a) Cretinism (b) Exopthalmic goitre
(c) Myxodema (d) Simple goitre

(viii) Charas and ganja are different products obtained from ______.
(a) Papaver somniferum (b) Erythroxylum coca
(c) Atropa belladonna (d) Cannabis sativa

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Page No. 3/7 Subject Code J-297 a

(ix) Select the analogous organs.
(a) Forelimbs of lizards and birds.
(b) Sweet potato and potato.
(c) Thorns of Bougainvillea and tendrils of cucurbita.
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(d) Vermiform appendix and the caecum.
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(x)
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Which

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a (b) New grasses grown on savanna after a wildfire.
(c) Newly formed volcanic island is colonised by Lichens.
(d) Miyawaki plantation on hill slopes.

Q. 2. Answer the following questions : 8

(i)
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How many meiotic divisions are required to produce 80 male
gametes in Angiosperms?
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(ii)
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Which biological tool in rDNA technology is also called molecular
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scissors?
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(iii) When turgor pressure is equal to wall pressure of a turgid cell,
then what would be the diffusion pressure deficit?

(iv) What are Long Day Plants (LDP)?

(v) Which part of human brain is responsible for maintaining body
balance?
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What is the approximate volume of blood pumped out during
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a (vii) Name the milk secreted by mammary gland soon after parturition.

(viii) Name the causative agent of typhoid.

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Page No. 4/7 Subject Code J-297
SECTION – B
Attempt any EIGHT of the following questions : 16

Q. 3. Give the properties of water.

Q. 4. Mention the characteristics of plasmids which make it a good vector.

Q. 5. Sketch and label the structure of antibody.

Q. 6. Match the crop and its hybrid variety and rewrite the following :

Column I Column II
Crop Hybrid Variety

(i) Rice (1) Ganga-3
(ii) Maize (2) Niphad
(iii) Jowar (3) Ratna
(iv) Bajra (4) CO-12

Q. 7. Identify the labels-A, B, C and D in the given diagram.

A
B
C
D

Q. 8. Considering Griffith experiment, answer the following.

(a) Name the bacterium used.

(b) Write conclusion of the experiment.

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Page No. 5/7 Subject Code J-297 a

Q. 9. Write a note on Angina-Pectoris.

Q. 10. Explain the term plasticity.

Q. 11. Sketch and label the Graafian follicle showing theca externa, antrum
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and corona radiata.

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Give the skeletal features of Homo erectus.
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Q. 12.

g lathe names of VI, VII, VIII and IX cranial nerves.
Q. 13.
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Enlist

Q. 14. With the help of graphical representation explain sex determination in

honey-bees.

SECTION – C
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Attempt any EIGHT of the following questions :
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Q. 15.
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Write any three characters each of Archaeopteryx showing Reptilian and

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Q. 16. Give an account of cutting and grafting as vegetative reproduction

methods.

Q. 17. Explain leaching, humification and mineralization as the steps of

decomposition process.
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Q. 18.

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With the help of a labelled diagram, describe the structure
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(b) Give functions of cerebrospinal fluid.

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Page No. 6/7 Subject Code J-297
Q. 21. (a) Enlist any four mineral deficiency symptoms seen in plants.

(b) Give the function of molybdenum as mineral nutrient.

Q. 22. Match the following from Column-A and Column-B. Write the

correct pairs.

Column A Column B

(i) Anaemia (1) Platelet derived growth factor

(ii) Atherosclerosis (2) Relaxin

(iii) Parturition (3) Insulin

(iv) Blood clots (4) Erythropoietin

(v) Cancer (5) Tissue plasminogen activator (TPA)
(vi) Diabetes (6) Interferons, tumour necrosis

factor interleukins

Q. 23. Write a note on in situ conservation of biodiversity.

Q. 24. Explain the phase of menstrual cycle which occurs after ovulation.

Q. 25. Differentiate between inspiration and expiration during breathing

process.

Q. 26. (a) Give the composition of biogas.

(b) Enlist the benefits of biogas.

SECTION – D
Attempt any THREE of the following questions : 12

Q. 27. Give location and function of any four valves present in human heart.

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Page No. 7/7 Subject Code J-297 a

Q. 28. Identify A, B, C and D parts in the given diagram of an Angiospermic
ovule and give the fate of each part after fertilization:

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C

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a A

Q. 29. Give an account of different functional areas of cerebrum.

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Q. 30. (a) Write a note on Holandric genes.

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(b) Complete the following table:
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A B

(i) Monosomy (1)

(ii) (2) 2n–2

(iii) Trisomy (3)

(iv) (4) 2n+2

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Q. 31.
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(a) What is DNA profiling?
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c. o (b) Arrange the following steps of DNA profiling in correctsesequence:
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(iv) Hybridization
a (v) Southern blotting (vi) Restriction digestion

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