Usman

Category: Learn Botany Quiz

  • Double fertilisation in angiosperms produces:

    {“lesson_id”:0,”category_id”:91,”topic”:”01. Flowering Plants”,”choices”:[“A zygote and endosperm”,”Only a fruit wall”,”Only pollen tubes”,”Two embryos and no endosperm”],”correct”:0,”type”:”mcq”,”explain”:”One sperm fuses with the egg (zygote); the other with polar nuclei (endosperm).”}

  • Clusters of sporangia on the underside of a frond are called:

    {“lesson_id”:0,”category_id”:102,”topic”:”03. Ferns”,”choices”:[“Nectaries”,”Lenticels”,”Stomata”,”Sori”],”correct”:3,”type”:”mcq”,”explain”:”Sori are groups of spore-producing sporangia.”}

  • Brown seaweeds such as kelps are:

    {“lesson_id”:0,”category_id”:108,”topic”:”05. Algae”,”choices”:[“Mosses”,”Fungi”,”Angiosperms”,”Phaeophytes with fucoxanthin”],”correct”:3,”type”:”mcq”,”explain”:”Brown algae are mostly marine and can form huge underwater forests.”}

  • A seed typically contains:

    {“lesson_id”:0,”category_id”:64,”topic”:”Life Cycle Of A Flowering Plant”,”choices”:[“An embryo and stored food, protected by a seed coat”,”Only pollen”,”Only a flower bud”,”Only a fruit wall”],”correct”:0,”type”:”mcq”,”explain”:”The embryo is the young sporophyte; endosperm or cotyledons supply food.”}

  • Auxin is a hormone well known for:

    {“lesson_id”:0,”category_id”:75,”topic”:”Plant Growth And Development”,”choices”:[“Cell elongation and phototropism”,”Forming silica walls”,”Closing the Calvin cycle”,”Fixing nitrogen in air”],”correct”:0,”type”:”mcq”,”explain”:”Unequal auxin distribution bends shoots toward light.”}

  • Many traditional medicines are:

    {“lesson_id”:0,”category_id”:77,”topic”:”Plants And People”,”choices”:[“Only table salt”,”Plant secondary metabolites (alkaloids, glycosides, oils)”,”Only synthetic plastics”,”Only distilled water”],”correct”:1,”type”:”mcq”,”explain”:”Aspirin traces to willow; morphine to opium poppy; quinine to Cinchona.”}

  • Vascular bundles in a typical dicot stem are arranged:

    {“lesson_id”:5818,”category_id”:0,”topic”:””,”choices”:[“Only in the pith”,”Scattered in the ground tissue”,”Only in the epidermis”,”In a ring”],”correct”:3,”type”:”mcq”,”explain”:”Dicot stems usually have bundles in a ring, allowing a vascular cambium to form.”}

  • Chlorophyll absorbs mainly:

    {“lesson_id”:5734,”category_id”:0,”topic”:””,”choices”:[“Green light only”,”Blue and red light”,”Infrared only”,”UV-C only”],”correct”:1,”type”:”mcq”,”explain”:”Green is mostly reflected, which is why leaves look green; absorption peaks are in blue and red.”}

  • Which product is a direct reason botany matters to people?

    {“lesson_id”:0,”category_id”:59,”topic”:”Introduction To Botany”,”choices”:[“Food, medicines, timber and fibres”,”Only plastics from petroleum”,”Only fossil fuels from animals”,”Only metallic ores”],”correct”:0,”type”:”mcq”,”explain”:”Crops, drugs, wood and cotton all come from plants.”}

  • Monocots typically have:

    {“lesson_id”:0,”category_id”:91,”topic”:”01. Flowering Plants”,”choices”:[“No seeds”,”Naked seeds on cones”,”Two cotyledons and net venation”,”One cotyledon and parallel venation”],”correct”:3,”type”:”mcq”,”explain”:”Grasses and lilies are monocots: one seed leaf, parallel veins, floral parts in threes.”}