HSC Science (General)
Academic Year: 2023-2024
Date & Time: 6th March 2024, 11:00 am
Duration: 3h
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General Instructions :
The question paper is divided into four sections.
- 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. - Section B: Q. No. 3 to 14 are short answer type of questions carrying two marks each. (Attempt any Eight)
- Section C: Q. No. 15 to 26 are short answer type of questions carrying three marks each. (Attempt any Eight)
- Section D: Q No 27 to 31 are long answer type of questions carrying four marks each. (Attempt any Three)
- Begin the answer to each section on a new page.
Identify the growth hormone in plants which causes inhibitory effect.
Cytokinins
Abscissic acid
Gibberellin
Ethylene
Chapter: [0.07] Plant Growth and Mineral Nutrition
Which one of the following is not a part of lac operon?
Promoter
Regulator
Inducer
Operator
Chapter: [0.04] Molecular Basis of Inheritance
In absence of fertilization, corpus luteum degenerates into ______.
Tunica albugenia
Membrana granulosa
Zona pellucida
Corpus albicans
Chapter: [0.02] Reproduction in Lower and Higher Animals
Which of the following divides nasal cavity?
Hyaline cartilage
Mesethmoid cartilage
Ligamentum arteriosum
Laryngopharynx
Chapter: [0.08] Respiration and Circulation
Which of the following is caused by unsterilized needle?
Elephantiasis
AIDS
Malaria
Dengue
Chapter:
The recognition sequence of restriction enzymes is generally ______ nucleotide long.
2 to 4
4 to 8
8 to 10
14 to 18
Chapter: [0.12] Biotechnology
Which of the following types require pollinator but the result is genetically similar to autogamy?
Geitonogamy
Xenogamy
Apogamy
Cleistogamy
Chapter: [0.01] Reproduction in Lower and Higher Plants [0.02] Reproduction in Lower and Higher Animals
Which one of the following does not evolve further?
Climax community
Primary Succession
Pioneer Species
Seral Community
Chapter: [0.14] Ecosystems and Energy Flow
Identify the appropriate term for the number of births under ideal conditions:
Absolute mortality
Realized natality
Realized mortality
Absolute natality
Chapter: [0.13] Organisms and Populations
Observe the graph and select the correct option:
Line A represents, S = CA2
Line B represents, log C = log A + Z log S
Line A represents, S = CAZ
Line B represents, log S = log Z + C log A
Chapter: [0.15] Biodiversity, Conservation and Environmental Issues
Very short answer question:
What is vestigeal organ?
Chapter: [0.05] Origin and Evolution of Life
Expand the term ZIFT.
Chapter: [0.02] Reproduction in Lower and Higher Animals
Give the name of endocrine gland which is prominert at birth but gets gradually atrophied in adult stage.
Chapter: [0.09] Control and Co-ordination
Give the full form of IAA.
Chapter: [0.07] Plant Growth and Mineral Nutrition
Give the name of microbial source of antibiotic chloromycetin.
Chapter: [0.11] Enhancement of Food Production
Which cells of islets of Langerhans produce a hormone insulin?
Chapter: [0.09] Control and Co-ordination
Chapter: [0.01] Reproduction in Lower and Higher Plants
Explain the term Emigration.
Chapter: [0.13] Organisms and Populations
Short Answer Question.
What are the reasons for Mendel’s success?
Chapter:
Arrange the following steps of DNA fingerprinting in correct sequence:
- Gel electrophoresis
- Isolation of DNA
- Southern blotting
- Restriction digestion
Chapter: [0.04] Molecular Basis of Inheritance
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Distinguish between human sperm and ovum.
Chapter: [0.02] Reproduction in Lower and Higher Animals
Enlist the uses of gene therapy.
Chapter: [0.12] Biotechnology
Define the term gene flow.
Chapter: [0.05] Origin and Evolution of Life
Define the term Chromosomal aberrations.
Chapter: [0.05] Origin and Evolution of Life
Give any four points of significance of double fertilization.
Chapter: [0.01] Reproduction in Lower and Higher Plants
Identify and define 'A' and 'B' in relation to uptake of water by the root:
Chapter: [0.06] Plant Water Relation
Describe mutualism.
Chapter: [0.13] Organisms and Populations
Explain factors affecting water absorption.
Chapter: [0.06] Plant Water Relation
What is differentiation?
Chapter: [0.07] Plant Growth and Mineral Nutrition
What is redifferentiation?
Chapter: [0.07] Plant Growth and Mineral Nutrition
Select and rewrite the appropriate disorder of the respiratory system with the given symptom.
Breakdown of alveoli, shortness of breath.
Sinusitis
Emphysema
Silicosis and asbestosis
Laryngitis
Chapter: [0.08] Respiration and Circulation
Select and rewrite the appropriate disorder of the respiratory system with the given symptom.
Inflammation of the sinuses, mucous discharge.
Sinusitis
Emphysema
Silicosis and asbestosis
Laryngitis
Chapter: [0.08] Respiration and Circulation
Select and rewrite the appropriate disorder of the respiratory system with the given symptom.
Inflammation of larynx, vocal cord, sore throat, hoarseness of voice, mucous build up and cough.
Sinusitis
Emphysema
Silicosis and asbestosis
Laryngitis
Chapter: [0.08] Respiration and Circulation
Select and rewrite appropriate disorder of respiratory system with the given symptom.
Inflammation of fibrosis, lung damage.
Sinusitis
Emphysema
Silicosis and asbestosis
Laryngitis
Chapter: [0.08] Respiration and Circulation
Explain the steps involved in preliminary treatment of sewage.
Chapter: [0.11] Enhancement of Food Production
Give the different steps involved in formation of m-RNA from hn-RNA.
Chapter: [0.04] Molecular Basis of Inheritance
What is reproductive isolation?
Chapter: [0.05] Origin and Evolution of Life
Name any three types of premating isolating mechanisms.
Chapter: [0.05] Origin and Evolution of Life
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Name any three types of postmating isolating mechanisms.
Chapter: [0.05] Origin and Evolution of Life
Enlist any two features of Acquired immunity.
Chapter: [0.1] Human Health and Diseases
Name and describe hormones secreted by ovaries.
Chapter: [0.09] Control and Co-ordination
Describe the steps of PCR technique.
Chapter: [0.12] Biotechnology
Identify A, B, and C from the above diagrams and give their functions.
Chapter: [0.08] Respiration and Circulation
What are the limitations of root pressure theory?
Chapter: [0.06] Plant Water Relation
Explain the greenhouse effect with reference to the gases responsible for it and their sources.
Chapter: [0.15] Biodiversity, Conservation and Environmental Issues
Describe physiological effects and applications of gaseous hormones in plants.
Chapter: [0.07] Plant Growth and Mineral Nutrition
Give the name and type of I, IV and VII cranial nerves.
Chapter: [0.09] Control and Co-ordination
Describe pyramid of energy with the help of diagram.
Chapter: [0.14] Ecosystems and Energy Flow
What is lac?
Chapter: [0.11] Enhancement of Food Production
Give the economic importance of lac.
Chapter: [0.11] Enhancement of Food Production
Explain the histological structure of testis.
Chapter: [0.02] Reproduction in Lower and Higher Animals
What are chromosomal disorders?
Chapter: [0.03] Inheritance and Variation
Describe Turner's syndrome.
Chapter: [0.03] Inheritance and Variation
Describe Klinefelter’s syndrome.
Chapter: [0.03] Inheritance and Variation
Describe nervous system in planaria with well labelled diagram.
Chapter: [0.09] Control and Co-ordination
Explain following term:
Grafting
Chapter: [0.01] Reproduction in Lower and Higher Plants
Explain following term:
Apomixis
Chapter: [0.01] Reproduction in Lower and Higher Plants
Explain following term:
Polyembryony
Chapter: [0.01] Reproduction in Lower and Higher Plants
Define parthenocarpy.
Chapter: [0.01] Reproduction in Lower and Higher Plants
Interpret the given diagrams A and B. Enlist the changes occuring, during inspiration and expiration.
Chapter: [0.08] Respiration and Circulation
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