Import Question JSON

Current Question (ID: 12477)

Question:

Vascular bundles in monocotyledons are considered closed because:

Options:

1. a bundle sheath surrounds each bundle
2. cambium is absent
3. there are no vessels with perforations
4. xylem is surrounded all around by phloem

Solution:

Vascular bundles in monocotyledonous plants are considered "closed" because they lack cambium, which is a layer of meristematic tissue responsible for secondary growth in plants. Cambium is responsible for producing new xylem and phloem cells, which allows for an increase in girth or thickness of stems and roots. In monocots, the vascular bundles are composed of primary xylem and phloem, and there is no cambium present to produce secondary vascular tissues. This is in contrast to dicotyledonous plants, which have vascular bundles with both primary and secondary vascular tissues, including cambium. The other options (1, 3, and 4) do not accurately describe why vascular bundles in monocots are considered closed.

Import JSON File

Upload a JSON file containing LaTeX/MathJax formatted question, options, and solution.

Expected JSON Format:

{
  "question": "The mass of carbon present in 0.5 mole of $\\mathrm{K}_4[\\mathrm{Fe(CN)}_6]$ is:",
  "options": [
    {
      "id": 1,
      "text": "1.8 g"
    },
    {
      "id": 2,
      "text": "18 g"
    },
    {
      "id": 3,
      "text": "3.6 g"
    },
    {
      "id": 4,
      "text": "36 g"
    }
  ],
  "solution": "\\begin{align}\n&\\text{Hint: Mole concept}\\\\\n&1 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\text{ moles of carbon atom}\\\\\n&0.5 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\times 0.5 \\text{ mol} = 3 \\text{ mol}\\\\\n&1 \\text{ mol of carbon} = 12 \\text{ g}\\\\\n&3 \\text{ mol carbon} = 12 \\times 3 = 36 \\text{ g}\\\\\n&\\text{Hence, 36 g mass of carbon present in 0.5 mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6].\n\\end{align}",
  "correct_answer": 4
}