HSC Science (General)
Academic Year: 2014-2015
Date & Time: 7th October 2015, 4:00 pm
Duration: 3h
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How many meiotic divisions will be needed to produce 44 female gametophytes in angiosperms?
11
22
44
66
Chapter: [0.01] Reproduction in Lower and Higher Plants
If the codon on m-RNA is AUG, the compatible anticodon on t-RNA is _______.
UAG
UAC
GUA
AUC
Chapter: [0.04] Molecular Basis of Inheritance
_______ enzymes are used as biological scissors in r-DNA technology.
(A) Restriction endonucleases
(B) DNA ligases
(C) DNA polymerases
(D) Reverse transcriptases
Chapter: [0.04] Molecular Basis of Inheritance
Vegetative propagation takes place with the help of leaves in _________ plant.
Kalanchoe
Oxalis
Cynodon
Dahlia
Chapter: [0.01] Reproduction in Lower and Higher Plants
Trichoderma konigi is a source of _______ enzyme.
(A) invertase
(B) lipase
(C) pectinase
(D) cellulase
Chapter: [0.11] Enhancement of Food Production
What is the correct sequence of the stages in bacteriophage lytic cycle?
(A) Attachment, Penetration, Lysis, Multiplication
(B) Attachment, Penetration, Multiplication, Lysis
(C) Lysis, Penetration, Multiplication, Attachment
(D) Attachment, Lysis, Multiplication, Penetration
Chapter: [0.04] Molecular Basis of Inheritance
Edible fruiting bodies are produced by _______.
Yeast
Rhizopus
Nostoc
Agaricus
Chapter: [0.11] Enhancement of Food Production
Give reason :
Emasculation is done in a flower which is selected as female parent.
Chapter: [0.11] Enhancement of Food Production
Label the parts (1) and (2) in budding of yeast cell.
Chapter: [0.01] Reproduction in Lower and Higher Plants
Enlist types of DNA library.
Chapter: [0.04] Molecular Basis of Inheritance
Define parthenocarpy.
Chapter: [0.01] Reproduction in Lower and Higher Plants
What is ecological succession?
Chapter: [0.14] Ecosystems and Energy Flow
Give the role of VAM related to soil fertility.
Chapter: [0.13] Organisms and Populations
Give diagrammatic representation of pyramid of numbers.
Chapter: [0.14] Ecosystems and Energy Flow
With the help of a suitable example, explain protandry.
Chapter: [0.01] Reproduction in Lower and Higher Plants
How depletion of the ozone layer affect living organisms?
Chapter: [0.15] Biodiversity, Conservation and Environmental Issues
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Give a graphic representation of cyclic photophosphorylation.
Chapter: [0.07] Plant Growth and Mineral Nutrition
Explain the role of microbes in sewage treatment.
Chapter: [0.11] Enhancement of Food Production
Describe the steps of PCR technique.
Chapter: [0.12] Biotechnology
Write a note on multiple alleles considering examples of human blood groups.
Chapter: [0.03] Inheritance and Variation
What is ‘biofortification’?
Chapter: [0.11] Enhancement of Food Production
Which steps would you follow to develop a new variety of crop plant by selective breeding?
Chapter: [0.11] Enhancement of Food Production
Sketch and label the T.S. of undehisced anther.
Chapter: [0.01] Reproduction in Lower and Higher Plants
Describe the process of glycolysis with the help of schematic representation.
Chapter:
Explain the semi-conservative replication of eukaryotic DNA.
Chapter: [0.04] Molecular Basis of Inheritance
Elephantiasis is caused by ________________.
Wuchereria bancrofti
Plasmodium vivax
Bedbug
Elephant
Chapter: [0.1] Human Health and Diseases
Genetically engineered human insulin is obtained by inserting the gene in ______________.
Pancreatic cells
E. coli
Agrobacterium tumefaciens
Drosophila melanogaster
Chapter: [0.12] Biotechnology
Urea splitting bacteria are responsible for _______ types of stones.
(A) calcium oxalate
(B) calcium phosphate
(C) calcium carbonate
(D) struvite
Chapter: [10.02] Excretion and Osmoregulation
The connecting link between ‘ape’ and ‘man’ is _______.
(A) Dryopithecus
(B) Australopithecus
(C) Homo erectus
(D) Homo neanderthalensis
Chapter: [0.05] Origin and Evolution of Life
Crippling disease is caused due to poisoning of ____________.
Arsenic
Lead
Mercury
Selenium
Chapter: [0.1] Human Health and Diseases
The genetic marker used as key factor in DNA fingerprinting is _______.
(A) VNTRs
(B) Exons
(C) Introns
(D) DNA probes
Chapter: [0.04] Molecular Basis of Inheritance
The trophoblast cells in contact with embryonal knob are called ___________.
Inner mass cells
Blastomere
Amniogenic cells
Cells of Rauber
Chapter: [0.02] Reproduction in Lower and Higher Animals
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Mention any ‘two’ methods used to prevent spoilage of fish
Chapter: [0.11] Enhancement of Food Production
Define the term ‘genome’.
Chapter: [0.03] Inheritance and Variation
Define organic evolution.
Chapter: [0.05] Origin and Evolution of Life
What is criss-cross inheritance?
Chapter: [0.03] Inheritance and Variation
Mention the functions of Uterus in the human female reproductive system.
Chapter: [0.02] Reproduction in Lower and Higher Animals
What is Red Data Book?
Chapter: [0.15] Biodiversity, Conservation and Environmental Issues
Sketch and label the structure of chromosome.
Chapter: [0.03] Inheritance and Variation
Explain the concept ‘survival of the fittest’.
Chapter: [0.05] Origin and Evolution of Life
Give economic importance of apiculture
Chapter: [0.11] Enhancement of Food Production
Give the importance/significance of transgenic animals.
Chapter: [0.12] Biotechnology
Explain sex determination in human beings.
Chapter: [0.03] Inheritance and Variation
Describe T.S. of the spinal cord.
Chapter: [0.09] Control and Co-ordination
Give the effects of air pollutants on human health
Chapter:
Sketch and label ‘L.S. of human kidney’
Chapter: [10.02] Excretion and Osmoregulation
With the help of a suitable diagram, describe the conducting system of the human heart.
Chapter: [0.08] Respiration and Circulation
Describe the stages during three trimesters of pregnancy.
Chapter: [0.02] Reproduction in Lower and Higher Animals
Explain the process of parturition.
Chapter: [0.02] Reproduction in Lower and Higher Animals
Add a note on lactation.
Chapter: [0.02] Reproduction in Lower and Higher Animals
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