The Maharashtra Board Class 12th Biology 56-J-885 Question Paper PDF is now available for download. The Maharashtra State Board of Secondary and Higher Secondary Education (MSBSHSE) conducted the Class 12 Biology examination for a total duration of 3 hours, and the question paper carries a total of 70 marks.
Candidates can use the link below to download the Maharashtra Board Class 12th Biology 56-J-885 Question Paper with detailed solutions.
Maharashtra Board Class 12 Biology 56-J-885 Question Paper 2024 with Answer Key
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Maharashtra Class 12 2024 Biology Question Paper With Answer Key |
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Maharashtra Board Class 12 Biology With Solution
SECTION-A
Question 1:
Select the correct alternatives and write the answers :
(i) Identify the growth hormone in plants which causes inhibitory effect.
(ii) Which one of the following is not a part of lac operon?
(iii) In absence of fertilization, corpus luteum degenerates into ____.
(iv) Which of the following divides the nasal cavity?
(v) Which of the following is caused by an unsterilized needle?
(vi) Recognition sequences of restriction enzymes are generally ____ nucleotides long.
(vii) Which of the following types require pollinator but result is genetically similar to autogamy?
(viii) Which one of the following does not evolve further?
(ix) Identify the appropriate term for the number of births under ideal conditions:
(x) Observe the graph and select the correct option:
Question 2:
Answer the following questions
(i) What are vestigial organs?
(ii) Expand the term ZIFT.
(iii) Give the name of the endocrine gland which is prominent at birth but gets gradually atrophied in the adult stage.
(iv) What is the full form of IAA?
(v) Give the name of the microbial source of the antibiotic chloromycetin.
(vi) Which cells of islets of Langerhans produce the hormone insulin?
(vii) How many meiotic divisions are required for the formation of 300 seeds in angiosperm?
(viii) Explain the term Emigration.
Section B
Question 3:
Attempt any EIGHT of the following questions :
What are the reasons for the success of Mendel?
Question 4:
Arrange the following steps of DNA fingerprinting in correct sequence:
(a) Gel electrophoresis
(b) Isolation of DNA
(c) Southern blotting
(d) Restriction digestion
Distinguish between human sperm and ovum.
Enlist the uses of gene therapy.
What are the significances of double fertilization?
Identify and define ‘A’ and ‘B’ in relation to the uptake of water by the root:
Describe mutualism.
Explain factors affecting water absorption.
What is differentiation and redifferentiation?
Select and rewrite the appropriate disorder of the respiratory system based on the given symptoms:
Given disorders: [ Sinusitis, Emphysema, Silicosis and Asbestosis, Laryngitis ]
(a) Breakdown of alveoli, shortness of breath.
(b) Inflammation of the sinuses, mucous discharge.
(c) Inflammation of larynx, vocal cords, sore throat, hoarseness of voice, mucous build-up,
and cough.
(d) Inflammation of fibrosis, lung damage.
Explain the steps involved in the preliminary treatment of sewage.
SECTION-C
Question 15:
Give the different steps involved in the formation of mRNA from hnRNA.
What is reproductive isolation? Describe any two types each of pre-mating and post-mating isolating mechanisms.
Explain unique features of acquired immunity.
Name and describe hormones secreted by ovaries.
Explain different steps involved in the PCR technique.
Identify A, B, and C from the above diagrams and give their functions.
What are the limitations of the root pressure theory?
Explain the greenhouse effect with reference to gases responsible for it and their sources.
Describe the physiological effects and applications of ethylene.
Give the name and type of I, IV and VII cranial nerves.
Describe the pyramid of energy with the help of a diagram.
What is lac? Enlist economic importance of Lac.
Section-D
Question 27:
Describe the histological structure of the testis with a well-labeled diagram.
What are chromosomal disorders? Describe Turner’s syndrome and Klinefelter’s syndrome.
Describe the nervous system in Planaria with a well-labeled diagram.
Explain the following terms:
Interpret the given diagrams A and B. Enlist the changes occurring during inspiration and expiration.
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