HSC Science (General) 12th Board ExamMaharashtra State Board
Share
Notifications

View all notifications

Biology 2015-2016 HSC Science (General) 12th Board Exam Question Paper Solution

Login
Create free account


      Forgot password?
Biology
2015-2016 March
Marks: 70

[7]1 |  Select and write the most appropriate answer from the given alternatives for each sub-question
[1]1.1

(i) The phenotypic ratio of incomplete dominance is _____________.

(a) 2 : 1

(b) 1 : 2 : 1

(c) 1 : 1 : 1

(d) 1 : 1 : 2

Concept: Deviations from Mendelism - Incomplete Dominance, Co-dominance, Multiple Alleles and Inheritance of Blood Groups, Pleiotropy
Chapter: [1.01] Genetic Basis of Inheritance
[1]1.2

The number of purines in a segment of DNA molecule is 68. What will be the number of pyrimidines in this segment?

(a) 34

(b) 43

(c) 68

(d) 86

Concept: Structure of DNA and RNA
Chapter: [1.02] Gene - Its Nature, Expression and Regulation
[1]1.3

Alcoholic fermentation is brought about by _____________.

(a) Lactobacillus

(b) Saccharomyces

(c) Trichoderma

(d) Streptomyces

Concept: Microbes in Household Products
Chapter: [3.02] Microbes in Human Welfare
[1]1.4

Which of the following is not a photosynthetic pigment?

(a) Carotene

(b) Xanthophyll

(c) Phycobillins

(d) Anthocyanin

Concept: Pigments Are Involved in Photosynthesis
Chapter: [4.01] Photosynthesis
[1]1.5

Which one of the following is a stop codon?

(a) UAG

(b) UAC

(c) AUG

(d) UCA

Concept: Concept of Translation
Chapter: [1.02] Gene - Its Nature, Expression and Regulation
[1]1.6

Pyruvate undergoes oxidative decarboxylation to produce _____________.

(a) 2-PGA

(b) α-Ketoglutarate

(c) Succinyl-Co-A

(d) Acetyl-Co-A

Concept: Glycolysis
Chapter: [4.02] Respiration
[1]1.7

Which day is observed as ‘World Environment Day’?

(a) 21st May

(b) 5 th June

(c) 25th September

(d) 13th December

Concept: Greenhouse Effect and Climate Change
Chapter: [6.01] Organisms and Environment 1 - Habitat and Niche
[12]2
[6]2.1 | Answer in ‘one’ sentence only
[2]2.1.1

What is test cross?

Concept: Deviations from Mendelism - Incomplete Dominance, Co-dominance, Multiple Alleles and Inheritance of Blood Groups, Pleiotropy
Chapter: [1.01] Genetic Basis of Inheritance
[2]2.1.2

What is mycoherbicide?

Concept: Biotechnological Applications in Agriculture
Chapter: [2.01] Biotechnology - Process and Application
[2]2.1.3

What is Anticodon?

Concept: Genetic Code - tRNA – the Adapter Molecule
Chapter: [1.02] Gene - Its Nature, Expression and Regulation
[2]2.1.4

What is Humification?

Concept: Decomposition
Chapter: [6.01] Organisms and Environment 1 - Habitat and Niche
[2]2.1.5

How CO2 makes idlies puffy?

Concept: Bacteriophages
Chapter: [2.01] Biotechnology - Process and Application
[2]2.1.6

What is ecological succession?

Concept: Ecological Succession
Chapter: [6.01] Organisms and Environment 1 - Habitat and Niche
[2]2.2

Sketch and label the ‘Ultrastructure of Chloroplast’.

Concept: Site of Photosynthesis
Chapter: [4.01] Photosynthesis
[4]2.3 | Answer the following (Any TWO)
[2]2.3.1

Write a short note on ‘Mutational breeding’.

Concept: Plant Breeding
Chapter: [3.01] Enhancement in Food Production
[2]2.3.2

Enlist the advantages of Biogas

Concept: Microbes in Production of Biogas
Chapter: [3.02] Microbes in Human Welfare
[2]2.3.3

Explain ‘Carbon cycle’.

Concept: Nutrient Cycling
Chapter: [6.01] Organisms and Environment 1 - Habitat and Niche
[2]2.3.4

Give the floral adaptations for chiropterophily.

Concept: Adaptive Radiation
Chapter: [7.01] Origin and the Evolution of Life
[9]3
[6]3.1 |  Answer the following (Any TWO):
[3]3.1.1

Why the ratio in pleiotropy is 2 : 1? Explain it with example.

Concept: Deviations from Mendelism - Incomplete Dominance, Co-dominance, Multiple Alleles and Inheritance of Blood Groups, Pleiotropy
Chapter: [1.01] Genetic Basis of Inheritance
[3]3.1.2

Give the schematic representation of TCA cycle.

Concept: Aerobic Respiration - Tricarboxylic Acid Cycle
Chapter: [4.02] Respiration
[3]3.1.3

Differentiate between cyclic and non-cyclic photophosphorylation.

Concept: Electron Transport - Cyclic and Non-cyclic Photo-phosphorylation
Chapter: [4.01] Photosynthesis
[3]3.2

Give diagrammatic representation to show a perfect pairing and any ‘two’ Wobble pairings.

Concept: Transcription - Introduction of Transcription
Chapter: [1.02] Gene - Its Nature, Expression and Regulation
[7]4 | Attempt any one of following :
[7]4.1

What is double fertilisation? Describe the process in brief.

Concept: Double Fertilisation
Chapter: [5.01] Reproduction in Plants
[7]4.2

Define r-DNA technology.

Concept: Transposons
Chapter: [2.01] Biotechnology - Process and Application

Give the basic steps in r-DNA technology

Concept: Transposons
Chapter: [2.01] Biotechnology - Process and Application

Give any ‘three’ examples of the therapeutic products produced by r-DNA technology?

Concept: Transposons
Chapter: [2.01] Biotechnology - Process and Application
[7]5 | Select and write the most appropriate answer from the given alternatives for each sub-question
[1]5.1

If centromere is situated in the middle of the chromosome, it is called ________.

(a) Metacentric

(b) Acrocentric

(c) Submetacentric

(d) Telocentric

Concept: Inheritance of Two Genes - Chromosome Theory of Inheritance
Chapter: [7.02] Chromosomal Basis of Inheritance
[1]5.2

Which one of the following is useful in treatment of burns and wound healing?

(a) Tissue plasminogen activator

(b) Tissue growth factor

(c) DNAse

(d) Bovine growth hormone

Concept: Biotechnological Applications in Medicine
Chapter: [8.01] Genetic Engineering and Genomics
[1]5.3

Erythroblastosis foetalis is caused when mother is ______.

(a) Rh+ve

(b) With antibody ‘A’

(c) Rh-ve

(d) With antibody ‘B’

Concept: Embryo Development Upto Blastocyst Formation
Chapter: [11.01] Human Reproduction
[1]5.4

Deposition of fatty substances in the lining of arteries results in ______.

(a)Arteriosclerosis

(b)Atherosclerosis

(c) Hyperglycemia

(d)Hypotension

Concept: Disorders of Circulatory System
Chapter: [10.01] Circulation
[1]5.5

Struggle between cow and cow for getting grass is called ________.

(a) Inter-specific struggle

(b) Environmental struggle

(c) Struggle against natural calamities

(d) Intra-specific struggle

Concept: Ecosystems Patterns
Chapter: [6.01] Organisms and Environment 1 - Habitat and Niche
[1]5.6

In which type of adaptation, forelimbs are modified into wings?

(a) Aquatic adaptations

(b) Volant adaptations

(c) Arboreal adaptations

(d) Cursorial adaptations

Concept: Adaptive Radiation
Chapter: [7.01] Origin and the Evolution of Life
[1]5.7

Mating of two closely related individuals within the same breed is called ______.

(a) In-breeding

(b) Out-breeding

(c) Out-crossing

(d) Cross-breeding

Concept: Animal Husbandry
Chapter: [9.02] Animal Husbandry
[12]6
[6]6.1 |  Answer the following in ‘one’ sentence each:
[1]6.1.1

Visit of a veterinary doctor to dairy farm is mandatory. Give reasons.

Concept: Animal Husbandry
Chapter: [9.02] Animal Husbandry
[1]6.1.2

Why aquatic animals can afford to be ammonotelic?

Concept: Modes of Excretion - Ammonotelism
Chapter: [10.02] Excretion and Osmoregulation
[1]6.1.3

Why PUC is mandatory for vehicles?

Concept: Air Pollution and Its Control - Introduction of Air Pollution and Its Control
Chapter: [12.01] Organisms and Environment 2
[1]6.1.4

Define organic evolution.

Concept: Origin of Life
Chapter: [7.01] Origin and the Evolution of Life
[1]6.1.5

Give the genotype of Turner’s syndrome.

Concept: Genetic Disorders - Chromosomal Disorders
Chapter: [7.02] Chromosomal Basis of Inheritance
[1]6.1.6

Write down the full form of R.F.L.P.

Concept: DNA Fingerprinting
Chapter: [8.01] Genetic Engineering and Genomics
[2]6.2

Sketch and label T.S. of vein

Concept: Circulatory Pathways - Human Circulatory System
Chapter: [10.01] Circulation
[4]6.3 | Attempt any TWO of the following:
[2]6.3.1

Give any ‘two’ factors responsible for genetic variation.

Concept: Gene Flow and Genetic Drift
Chapter: [7.01] Origin and the Evolution of Life
[2]6.3.2

Give the name and function for ‘A’ and ‘B’ from the diagram given below

Concept: Gametogenesis
Chapter: [11.01] Human Reproduction
[2]6.3.3

Write a note on ‘artificial acquired active immunity’.

Concept: Concept of Immunity
Chapter: [9.01] Human Health and Diseases
[2]6.3.4

Give the economic importance of ‘fisheries’

Concept: Animal Husbandry
Chapter: [9.02] Animal Husbandry
[9]7
[6]7.1 | Attempt any TWO of the following:
[3]7.1.1

Explain sex determination in human beings.

Concept: Sex Determination - Sex Determination in Humans
Chapter: [7.02] Chromosomal Basis of Inheritance
[3]7.1.2

Describe steady population with the help of a pyramid.

Concept: Population - Population Attributes
Chapter: [12.01] Organisms and Environment 2
[3]7.1.3

Illustrate any ‘three’ genes which can be used in gene therapy.

Concept: Biotechnological Applications in Medicine
Chapter: [8.01] Genetic Engineering and Genomics
[3]7.2

Sketch and label ‘L.S. of human kidney’

Concept: Human Excretory System
Chapter: [10.02] Excretion and Osmoregulation
[7]8
[7]8.1

With the help of diagrammatic representation, explain the process of gametogenesis

Concept: Gametogenesis
Chapter: [11.01] Human Reproduction
[7]8.2

 Describe the structure of cerebrum. Add a note on its function.

Concept: Neural System
Chapter: [10.03] Control and Co-ordination

Request Question Paper

If you dont find a question paper, kindly write to us





      View All Requests

Submit Question Paper

Help us maintain new question papers on Shaalaa.com, so we can continue to help students




only jpg, png and pdf files

Maharashtra State Board previous year question papers 12th Board Exam Biology with solutions 2015 - 2016

     Maharashtra State Board 12th Board Exam Biology question paper solution is key to score more marks in final exams. Students who have used our past year paper solution have significantly improved in speed and boosted their confidence to solve any question in the examination. Our Maharashtra State Board 12th Board Exam Biology question paper 2016 serve as a catalyst to prepare for your Biology board examination.
     Previous year Question paper for Maharashtra State Board 12th Board Exam Biology-2016 is solved by experts. Solved question papers gives you the chance to check yourself after your mock test.
     By referring the question paper Solutions for Biology, you can scale your preparation level and work on your weak areas. It will also help the candidates in developing the time-management skills. Practice makes perfect, and there is no better way to practice than to attempt previous year question paper solutions of Maharashtra State Board 12th Board Exam.

How Maharashtra State Board 12th Board Exam Question Paper solutions Help Students ?
• Question paper solutions for Biology will helps students to prepare for exam.
• Question paper with answer will boost students confidence in exam time and also give you an idea About the important questions and topics to be prepared for the board exam.
• For finding solution of question papers no need to refer so multiple sources like textbook or guides.
S
View in app×