Import Question JSON

Current Question (ID: 12505)

Question:

Casparian strips are present in the endodermis of

Options:

1. Monocot stem
2. Dicot root
3. Dicot stem
4. More than one option is correct

Solution:

Casparian strips are bands of suberin, a waterproof substance, that are present in the radial and transverse walls of endodermal cells in the roots of dicotyledonous plants. These strips act as a barrier that prevents water and solutes from freely moving through the cell walls, and instead forces them to pass through the selectively permeable plasma membrane of endodermal cells. This helps in regulating the uptake of water and nutrients by the root, and is an important feature of the root's ability to control ion uptake and maintain water balance. Casparian strips are not typically present in the endodermis of monocot stems or dicot stems. So, options 1, 3, and 4 are not correct. Option 2, which mentions dicot root, is the correct answer.

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
}