Q.1 (i) A cell divides mitotically into two. Daughter cells divide and redivide repeatedly. Such growth is called _____.
Biology
Every question from past board papers on Biology, newest paper first. Open any question for its full worked answer.
Maharashtra HSC Biology Board Paper March 2026 with Solutions
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Q.1 (ii) The transgenic plant Tomato contains transgene _____ for the production of flavonoids.
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Q.1 (iii) The cranial capacity of Neanderthal-man was _____ C.C.
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Q.1 (iv) Identify the organism which meet their energy and nutrient requirements by degrading the detritus:
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Q.1 (v) Identify the algae among the following:
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Q.1 (vi) In plants, soluble food is always translocated in the form of _____.
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Q.1 (vii) Identify invasive plant species from the following :
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Q.1 (viii) The mature plasma cell produces antibodies at the rate of _____ molecules per second.
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Q.1 (ix) Which is the largest WBC among the following?
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Q.1 (x) The number of deaths when environmental pressures come into play is known as _____.
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Q.2 (i) Give the function of Leydig’s cells.
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Q.2 (ii) Define endangered species.
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Q.2 (iii) Name the gene which is inherited directly from father to son.
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Q.2 (iv) The producers receive 5000 Joules of light energy, then how much energy will be transferred to the carnivores (secondary consumers)?
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Q.2 (v) Define the term chlorosis.
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Q.2 (vi) Give the name of key factor in DNA profiling.
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Q.2 (vii) Define combined water.
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Q.2 (viii) Give the role of tapetum.
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Q.3 Give the features of respiratory surface for gaseous exchange.
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Q.4 Differentiate between complete sex-linkage and incomplete sex-linkage with reference to location of the gene and inheritance.
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Q.5 Explain the properties of nerve fibre with reference to : (a) Irritability (b) Conductivity
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Q.6 Draw a neat diagram of a nucleosome and label the following: (i) H1 histone (ii) DNA (iii) Octamer
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Q.7 Give any four advantages of micropropagation.
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Q.8 Name the organisms and their role in conversion of rock into soil.
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Q.9 Explain various harmful effects of noise pollution on human being.
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Q.10 Explain skeletal features of Homo erectus.
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Q.11 Enlist the main objectives for improved animal breeding programmes using gene transfer technology.
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Q.12 Mention any four factors affecting water absorption.
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Q.13 Write briefly on Alzheimer’s disease.
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Q.14 Calculate the amount of ATP required by nitrogen fixer for the formation of 1000 molecules of ammonia. Name the specialised cell of cyanobacteria where nitrogen is fixed.
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Q.15
Match the respiratory surface to the organism in which it is found :
Organisms Respiratory surface / organs (1) Limulus (a) Lungs (2) Protists (b) Internal gills (3) Tadpoles of frog (c) Book lungs (4) Fishes (d) External gills (5) Reptiles (e) Plasma membrane (6) Spiders (f) Book gills (g) Cloaca -
Q.16 Explain criss-cross inheritance with reference to bleeder’s disease by suitable charts.
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Q.17 (a) Distinguish between hibernation and aestivation.
(b) Give two behavioural adaptations of desert animals. -
Q.18 Define : (a) Siphonogamy (b) Parthenocarpy (c) Polyembryony
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Q.19 What is transpiration? Explain stomatal opening and closing mechanism with reference to starch-sugar interconversion theory.
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Q.20 Enlist any six characteristics of genetic code.
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Q.21 (a) Mention the name of germ layer from which adrenal cortex and pancreas are developed.
(b) Explain the role of alpha (α) and delta (δ) cells of islets of Langerhans. -
Q.22 Define addiction. Give the physiological effects of : (a) Cocaine (b) Cannabinoids
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Q.23 What is infertility? Describe in brief ZIFT and GIFT.
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Q.24 Draw Urey and Miller’s experimental setup and label it.
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Q.25 (a) What is grand period of growth?
(b) Give two examples each of : (1) Growth promoters (2) Growth inhibitors -
Q.26 (a) What is biofertilizer?
(b) Draw and label the T.S. of root nodules. -
Q.27 With the help of labelled diagram describe the structure of human sperm.
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Q.28 What is cardiac cycle? Draw a normal ECG and label it. What do P-wave and QRS complex represent?
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Q.29 Write the name of disorders caused due to hypo and hyper secretion of adrenal corticoids. Mention any 3 symptoms of each of these disorders.
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Q.30 Explain nuclear and helobial type of endosperm with suitable examples.
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Q.31 Describe in brief :
(a) What is germ line gene therapy? Why is it not encouraged?
(b) Explain somatic cell gene therapy. Mention any two acquired disorders for which it is used.
Maharashtra HSC Biology Board Paper June 2026 with Solutions
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Q.1 (i) The microorganism used for production of beverages like wine, whisky, etc. is _____.
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Q.1 (ii) Which of the following is NOT a Day Neutral Plant (DNP)?
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Q.1 (iii) When food is translocated from phloem to pith, it is called _____ translocation.
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Q.1 (iv) Extinction of a host fish leads to extinction of unique parasites of it. This is an example of ________ .
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Q.1 (v) Flavr savr tomato is genetically modified variety for improving _____.
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Q.1 (vi) A petridish containing nutrient medium shows tremendous increase in number of bacteria in short time. It is _____ growth.
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Q.1 (vii) Weight loss, increased BMR and protruding eyeballs are the characteristics of _______.
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Q.1 (viii) Charas and ganja are different products obtained from ______.
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Q.1 (ix) Select the analogous organs.
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Q.1 (x) Which one of the following is an example of primary succession?
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Q.2 (i) How many meiotic divisions are required to produce 80 male gametes in Angiosperms?
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Q.2 (ii) Which biological tool in rDNA technology is also called molecular scissors?
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Q.2 (iii) When turgor pressure is equal to wall pressure of a turgid cell, then what would be the diffusion pressure deficit?
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Q.2 (iv) What are Long Day Plants (LDP)?
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Q.2 (v) Which part of human brain is responsible for maintaining body balance?
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Q.2 (vi) What is the approximate volume of blood pumped out during one cardiac cycle in adult human?
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Q.2 (vii) Name the milk secreted by mammary gland soon after parturition.
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Q.2 (viii) Name the causative agent of typhoid.
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Q.3 Give the properties of water.
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Q.4 Mention the characteristics of plasmids which make it a good vector.
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Q.5 Sketch and label the structure of antibody.
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Q.6 Match the crop and its hybrid variety and rewrite the following :
Column I (Crop) Column II (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. [Figure: a human sperm with an oval head, a short neck, a coiled middle piece and a long tail. Label A points to the cap at the tip of the head, B to the large central part of the head, C to the small dark body just below the head, and D to the coiled region behind it.]
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Q.8 Considering Griffith experiment, answer the following.
(a) Name the bacterium used.
(b) Write conclusion of the experiment.
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Q.9 Write a note on Angina-Pectoris.
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Q.10 Explain the term plasticity.
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Q.11 Sketch and label the Graafian follicle showing theca externa, antrum and corona radiata.
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Q.12 Give the skeletal features of Homo erectus.
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Q.13 Enlist the names of VI, VII, VIII and IX cranial nerves.
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Q.14 With the help of graphical representation explain sex determination in honey-bees.
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Q.15 Write any three characters each of Archaeopteryx showing Reptilian and Avian features.
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Q.16 Give an account of cutting and grafting as vegetative reproduction methods.
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Q.17 Explain leaching, humification and mineralization as the steps of decomposition process.
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Q.18 Describe commensalism giving two examples.
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Q.19 With the help of a labelled diagram, describe the structure of root-hair.
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Q.20 (a) Write a note on meninges of central nervous system in human being.
(b) Give functions of cerebrospinal fluid.
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Q.21 (a) Enlist any four mineral deficiency symptoms seen in plants.
(b) Give the function of molybdenum as mineral nutrient.
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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.
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Q.24 Explain the phase of menstrual cycle which occurs after ovulation.
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Q.25 Differentiate between inspiration and expiration during breathing process.
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Q.26 (a) Give the composition of biogas.
(b) Enlist the benefits of biogas.
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Q.27 Give location and function of any four valves present in human heart.
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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: [Figure: L.S. of an anatropous ovule with two integuments around the nucellus and embryo sac; the micropyle faces downward beside the funicle. A points to the inner layer at the micropylar end, B to the outer layer, C to the cells at the micropylar end of the embryo sac (egg apparatus), and D to the nucleus in the centre of the embryo sac.]
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Q.29 Give an account of different functional areas of cerebrum.
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Q.30 (a) Write a note on Holandric genes.
(b) Complete the following table:
A B (i) Monosomy (1) ______ (ii) ______ (2) 2n–2 (iii) Trisomy (3) ______ (iv) ______ (4) 2n+2 -
Q.31 (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