Which of the following has proved helpful in preserving the pollen as fossils? Option 1 : Pollenkitt Option 2 : Oil content Option 3 : Cellulosic intine Option 4 : Sporopollenin The correct answer is Option 4.
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Which of the following pairs is wrongly matched? Option 1 : T.H. Morgan : Linkage Option 2 : Starch synthesis in pea : Multiple alleles Option 3 : XO types sex determination : Grasshopper Option 4 : ABO blood grouping : Co-dominance Correct answer is option 2.
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Offsets are produced by Option 1 : Parthenogenesis Option 2 : Parthenocarpy Option 3 : Mitotic divisions Option 4 : Meiotic divisions Correct answer is option 3
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Select the correct match Option 1 : Alec Jeffreys – Streptococcus pneumoniae Option 2 : Matthew Meselson and F. Stahl – Pisum sativum Option 3 : Alfred Hershey and Martha Chase – TMV Option 4 : Francois Jacob and Jacques Monod – Lac operon Correct answer is
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Plants having little or no secondary growth are Option 1 : Cycads Option 2 : Grasses Option 3 : Conifers Option 4 : Deciduous angiosperms The correct option is Option 2
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The experimental proof for semiconservative replication of DNA was first shown in a Option 1 : Fungus Option 2 : Virus Option 3 : Plant Option 4 : Bacterium Correct answer is option 4
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Secondary xylem and phloem in dicot stem are produced by Option 1 : Apical meristems Option 2 : Phellogen Option 3 : Axillary meristem Option 4 : Vascular cambium The correct answer is option 4
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Sweet potato is a modified Option 1 : Stem Option 2 : Rhizome Option 3 : Adventitious root Option 4 : Tap root The correct answer is option 3
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Casparian strips occur in Option 1 : Pericycle Option 2 : Endodermis Option 3 : Epidermis Option 4 : Cortex Correct answer is option 2
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Select the wrong statement Option 1 : Mushrooms belong to Basidiomycetes. Option 2 : Cell wall is present in members of Fungi and Plantae. Option 3 : Pseudopodia are locomotory and feeding structures in Sporozoans. Option 4 : Mitochondria are the powerhouse of the cell in all kingdoms except Monera. Correct option is Option 3
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