Import Question JSON

Current Question (ID: 12547)

Question:

The cork cambium, cork and secondary cortex are collectively called:

Options:

1. phellogen
2. periderm
3. phellem
4. phelloderm

Solution:

The cork cambium, cork and secondary cortex are collectively called periderm. Periderm is a secondary tissue that replaces the epidermis in stems and roots of woody plants during secondary growth. The cork cambium or phellogen is a meristematic tissue that produces cells to the outside, which differentiate into cork cells or phellem. The phellem cells are dead and filled with suberin, providing protection and preventing water loss. The cells produced to the inside by the cork cambium differentiate into phelloderm, a living tissue that may contribute to the radial growth of the stem. The secondary cortex refers to the layers of parenchyma cells produced by the cork cambium to the inside of the periderm.

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
}