Import Question JSON

Current Question (ID: 12155)

Question:

Which of the following statement is correct?

Options:

1. Ovules are not enclosed by the ovary wall in gymnosperms.
2. Selaginella is heterosporous, while Salvinia is homosporous.
3. Horsetails are gymnosperms.
4. Stems are usually unbranched in both Cycas and Cedrus.

Solution:

The gymnosperms are a group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes. The term Gymnosperm (Gymnos: "naked" and sperma: "seed"), meaning "naked seeds". these are the plants in which the seeds are not enclosed within fruit wall that men they bear naked seeds. These seeded plants without fruits. • Plants like Lycopodium, Dryopteris produces a single kind of spores and are known as homosporous whereas plant like selaginella, saivinia etc, produces two kinds of spores, macro and microspores and are known as heterosporous. • Pteridophytes are the seedless vascular plants which include horsetails (Equisetum) and ferns. • The stem is unbranched in case of Cycas or branched in Pinus and Cedrus.

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
}