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Current Question (ID: 12113)

Question:

The leaves of gymnosperms

Options:

1. Are not adapted to withstand extremes of temperature
2. May be simple or compound
3. Are needle shaped in all members
4. Lack transfusion tissue

Solution:

The leaves of gymnosperms can be simple or compound, and can take different shapes depending on the species. For example, the leaves of pine trees are needle-shaped, while the leaves of cycads are pinnate (compound). Some species of gymnosperms also have broad, flat leaves, such as the Ginkgo biloba. The leaves of gymnosperms are adapted to withstand extremes of temperature, and some species have specialized structures such as resin ducts to help protect them from herbivores and other threats. Transfusion tissue is present in gymnosperms, and helps to transport water and nutrients from the xylem to the phloem.

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
}