Usman

Tag: category-68

  • A herbarium is:

    {“lesson_id”:0,”category_id”:68,”topic”:”Methods In Botany”,”choices”:[“A greenhouse heating system”,”A type of root”,”A collection of dried, labelled plant specimens”,”An algal bloom”],”correct”:2,”type”:”mcq”,”explain”:”Pressed specimens with collection data document names and distribution.”}

  • The compound microscope is used in botany mainly to study:

    {“lesson_id”:0,”category_id”:68,”topic”:”Methods In Botany”,”choices”:[“Cells and tissues too small to see by eye”,”Ocean tides”,”Continental drift”,”Satellite climate only”],”correct”:0,”type”:”mcq”,”explain”:”Stained sections reveal epidermis, xylem, pollen and more.”}

  • A dichotomous key is used to:

    {“lesson_id”:0,”category_id”:68,”topic”:”Methods In Botany”,”choices”:[“Grow plants in space”,”Measure rainfall only”,”Extract DNA from rocks”,”Identify an unknown plant by paired choices”],”correct”:3,”type”:”mcq”,”explain”:”Each step offers two leads until a name is reached.”}

  • Field botanists often record:

    {“lesson_id”:0,”category_id”:68,”topic”:”Methods In Botany”,”choices”:[“Only stellar magnitude”,”Only stock prices”,”Only blood groups”,”Habitat, location, date and associated species”],”correct”:3,”type”:”mcq”,”explain”:”Good labels make a specimen scientifically useful.”}

  • Sectioning a stem for the microscope usually requires:

    {“lesson_id”:0,”category_id”:68,”topic”:”Methods In Botany”,”choices”:[“Only a telescope”,”Burning the wood to ash first”,”Freezing the whole tree intact”,”Thin slices (often with a microtome) and staining”],”correct”:3,”type”:”mcq”,”explain”:”Thin stained sections show cell types clearly.”}

  • DNA barcoding in plants is a method to:

    {“lesson_id”:0,”category_id”:68,”topic”:”Methods In Botany”,”choices”:[“Measure wind speed”,”Identify species using short genetic sequences”,”Paint flowers”,”Count stomata by hand only”],”correct”:1,”type”:”mcq”,”explain”:”Chloroplast or nuclear markers help confirm difficult identifications.”}

  • A quadrat is used in plant ecology to:

    {“lesson_id”:0,”category_id”:68,”topic”:”Methods In Botany”,”choices”:[“Pollinate orchids”,”Sample vegetation in a known area”,”Store seeds in liquid nitrogen only”,”Cook food”],”correct”:1,”type”:”mcq”,”explain”:”Repeating quadrats estimates cover or density.”}

  • True or false: Scientific plant names are binomials (genus + specific epithet).

    {“lesson_id”:0,”category_id”:68,”topic”:”Methods In Botany”,”choices”:[“True”,”False”],”correct”:0,”type”:”true_false”,”explain”:”Linnaean binomials such as Oryza sativa give a unique, worldwide name.”}