Class/Course - Class XII

Subject - Biology

Total Number of Question/s - 4195


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  • 1. Reproduction in Organisms - Quiz

    1. In which one pair both the plants can be vegetatively propagated by leaf pieces
    a) Bryophyllum and Kalanchoe
    b) Chrysanthemum and Agave
    c) Agave and Kalanchoe
    d) Asparaus and Bryophyllum

    2. Gemmule formation in sponges is helpful in
    a) Parthenogenesis
    b) Sexual reproduction
    c) Only dissemination
    d) Aesxual reproduction

  • 2. Sexual Reproduction in Flowering Plants - Quiz

    1. The nuclei of the sperm and egg fuse as a result of
    a) Base pair relation of DNA and RNA
    b) Formation of hydrogen bonds
    c) Mutual attraction caused by differences in electrical charges
    d) Attraction of protoplasts of egg and sperm

    2. In agamospermy, the embryo sac is diploid because it is formed without meiosis. Such embryo sac may develop from
    a) Megaspore mother cell
    b) Microspore mother cell
    c) Megaspores
    d) Microspores

  • 3. Human Reproduction - Quiz

    1. Sertoli cells are found in
    a) Kidney of rabbit
    b) Ovary of frog
    c) Testes of rabbit
    d) Ovary of rabbit

    2. In reproduction of a test tube baby
    a) Fertilization is done outside body
    b) Foetus is grown in a test tube
    c) Fertilization is done inside the body
    d) None of these

  • 4. Reproductive Health - Quiz

    1. Which one of the following statements is correct regarding Sexually Transmitted Diseases (STD)
    a) A person many contact syphilis by sharing milk with one already suffering from the disease
    b) Heamophilia is one of the STD
    c) Genital herpes and sickle - cell anaemia are both STDD
    d) The chances of a 5 year boy contacting a STD are very little

    2. What is the fuction of copper-T
    a) Checks mutation
    b) Stops fertilization
    c) Stops zygote formation
    d) Stops oblituation of blastocoel

  • 5. Principles of Inheritance and Variation - Quiz

    1. Which of the following are most abundant types of antibodies
    a) IgA
    b) IgE
    c) IgG
    d) IgM

    2. If a plant heterozygous for tallness is selfd, the F2 generation has both tall and dwarf plants. This proves the principle of
    a) Dominance
    b) Segregation
    c) Independent assortmnt
    d) Incomplete dominance

  • 6. Molecular Basis of Inheritance - Quiz

    1. The eukaryotic genome differs from the prokaryotic genome because
    a) Repetitive sequence are present in eukaryotes
    b) Genes in the former case are organized into operons
    c) The DNA is complexed with histones in prokaryotes
    d) The DNA is circular and single stranded in prokaryoyes

    2. A triplet codon means
    a) A sequence of three nitrogen bases on mRNA
    b) A sequence of three nitrogen bases in tRNA
    c) Paired triplet of bases on rRNA
    d) An unpaired triplet of bases in an exposed position of tRNA

  • 7. Evolution - Quiz

    1. The scientist regarded as Neo-Lamarckist are
    a) August Weismann and T.H. Morgan
    b) Hardy Wieinberg
    c) Correns, Tshekrmal and Hugo de Vries
    d) Kammerer and Mc Gougall

    2. Who gave the theory of pangenesis
    a) Lamarck
    b) Wallace
    c) Heackle 
    d) Darwin

  • 8. Human Health and Disease - Quiz

    1. When an organ is transplanted and is rejected by the body, the lymphocytes are produced by
    a) Cytotoxic T cells
    b) NK cells
    c) Suppressor T cells
    d) B cells

    2. Read the following four statements (A-D)
    (a) Colostrum is recommended for the new born because it is rich in antigens
    (b) Chikengunya is caused by a Gram negative bacterium
    (c ) Tissue culture has proved useful in obtaining virus-free plants
    (d) Beer is manufactured by distillation of fermented grape juice
    How many of the above statements are wrong
    a) Two
    b) Three
    c) Four
    d) One

  • 9. Strategies for Enhancement in Food Production - Quiz

    1. Tissue culture technique can produce infinite number of new plants from a small parental tissue. The economic importance of the technique in rasing
    a) Genetically uniform population identical to the original parent
    b) Homozygous diploid plants
    c) Development of new species
    d) Variants through picking up stomaclonal variations

    2. A man made allopolypoid cereal crop is
    a) Hordeum vulgare
    b) Raphano brassica
    c) Triticale
    d) Zea mays

  • 10. Microbes in Human Welfare - Quiz

    1. Citric acid is produced by
    a) Aspergillus niger
    b) Streptococcus lactic
    c) Acetobacter suboxydans
    d) Candida utilis

    2. Interferons are
    a) Antiviral proteins
    b) Complex proteins
    c) Anti-bacterial proteins
    d) Anti-cancer proteins

  • 11. Biotechnology : Principles and Processes - Quiz

    1. Main objective of production/use of herbicine resistant GM crops is to
    a) Encourage eco-friendly herbicides
    b) Reduce herbicide accumulation in food articles for health saftery
    c) Eliminate weeds from the field without the use of manual labour
    d) Eliminate weeds from the field without the use of herbicides

    2. Which of these is widely used in genetic engineering
    a) Anopheles
    b) Dragon fly
    c) Dragon lizard
    d) Fruit fly

  • 12. Biotechnology and its Applications - Quiz

    1. Which one of the following is now being commericially produced by bitechnological procedures
    a) Nicotine
    b) Morphine
    c) Quinine
    d) Insulin

    2. The vaccine of Hepatitis-B is a
    a) First generation vaccine
    b) Interferon
    c) Second generation vaccine
    d) Third generation vaccine

  • 13. Organisms and Populations - Quiz

    1. Two organism, are showing commensalism type of interaction .in such relationship
    a) One is benefitted and the other harmed nor benefitted
    b) Mutual beneficial for both the organisms
    c) One prganism in harmed and the other is not affected
    d) One is benefitted and the other is harmed

    2. Edaphology is the relationship between
    a) Plant and biosphere
    b) Animal and ecosystem
    c) Soil and living organism
    d) Soil and biosphere

  • 14. Ecosystem - Quiz

    1. World enviornment day is celebrated on
    a) 15th March
    b) 15th April
    c) 4th May
    d) 5th June

    2. The first link in any food chain is always a green plant because
    a) They are widely distributed
    b) They are firmly fixed to the soil
    c) They alone have a capacity to fix atmospheric CO2 in the presence of sunlight
    d) All of the above

  • 15. Biodiversity and Conservation - Quiz

    1. Which one of the following shows maximum genetic diversity in India
    or
    Which one has the largest species variety in India
    a) Mango
    b) Groundnut
    c) Rice
    d) Maize

    2. Biodiversity of a geographical region represents
    a) Genetic diversity present in the dominant species of the region
    b) Species endemic to the region
    c) Endangered species found in the region
    d) The diversity in the organism living in the region

  • 16. Environmental Issues - Quiz

    1. Kyoto Protocol was endorsed at
    a) CoP-4
    b) CoP-3
    c) CoP-5
    d) CoP-6

    2. In an area where DDT had been used extensively , the population of birds declined significantly because
    a) Birds stopped laying eggs
    b) Earthworms in the area got eradicated
    c) Cobras were feeding exclusively on birds
    d) Many of the birds eggs laid, did not hatch

  • 17. Common Human Diseases - Quiz

    1. Which test confirms the scarley fever
    a) Dick test
    b) ECG
    c) UTT test
    d) Widal test

    2. Entaerbiasis disease is caused by
    a) Filaria worm
    b) Hook worm
    c) Pin worm
    d) Round worm

  • 18. Animal Husbandry - Quiz

    1. A lake with an inflow of domestic sewage rich in organic waste may result in
    a) Drying of the lake very soon due to algal bloom
    b) An increased production of fish due to lot of nutrient
    c) Death of fish due to lack of oxygen
    d) Increased population of aquatic web organism

    2. To increase milk yield, cow is given
    a) Sorbitol
    b) Stillbesterol
    c) Prolactin
    d) Ganadotrophin

  • 19. Bioenergy - Quiz

    1. Pyrethrin is ectracted from
    a) Azadirachta indica
    b) Helianthus anus
    c) Poa indica
    d) Chrysanthemum cinerarifolium

    2. Which one of the following is not biofertilizer
    a) Mycorrhiza
    b) Agrobacterium
    c) Rhizobium
    d) Nostoc

  • 20. Conservation of Natural Resources - Quiz

    1. Which one of the following expanded forms of the followings acronyms is correct
    a) IUCN =Internationl Union for Conservation of Nature and Natural Resources
    b) IPCC=International Panel for Climate Change
    c) UNEP= United Nations Enviornmental Policy
    d) EPA = Enviornmental  pollution Agency

    2. Minerals and metals are
    a) Renewable sourceb
    b) Non-renewable source
    c) Renewable and non renewable resources
    d) Biodegradable resources

  • 21. Drug Addiction, Mental & Community Health - Quiz

    1. Select the option having all correctly matched pairs
    A. Alkaloids (i) Carotenoid; Anthocyanin
    B. Pigments (ii)Vinblastin; Curcumin
    C. Drugs (iii) Morphine; Codeine
    a) A- I, B - ii, C - iii
    b) A - ii, B - iii, C-i
    c) A - iii, B - I, C - ii
    d) A - I, B - iii, C - ii

    2. Heroin is
    a) Diacetyl morphine
    b) Tricethyl morphine
    c) Tetra acetyl morphine
    d) Mono acetyl morphine

  • 22. Biome and Biogeochemical Cycle - Quiz

    1. Stratifications is more common is
    a) Tropical rain forest
    b) Decidious forest0
    c) Temperate forest
    d) Tropical savannah

    2. Match Column I (Indian forest types) with Column II (dominant tree general) and choose the correct option
    Column I Column II
    A.  Tropical rain forest 1. Hopea
    B. Tropical decidious forest 2. Shorea
    C. Temperate broad leaf forest 3. Quercus
    D. Temperate coniferous forest 4. Picea

    a) A - 1, B - 2, C - 3, D - 4
    b) A - 2, B - 1, C - 4, D - 3
    c) A - 3, B - 2, C - 1, D - 4
    d) A - 1, B - 2, C - 4, D - 3
    e) A - 4, B - 3, C - 2, D - 1