Import Question JSON

Current Question (ID: 13497)

Question:

The distinctive feature of Cnidarians is

Options:

1. Cnidoblast
2. Polyp and Medusa form
3. Gastro-vascular cavity
4. Hypostome

Solution:

The distinctive feature of cnidarians is the presence of cnidoblasts, which are specialized cells that contain nematocysts, or stinging cells. Cnidoblasts are unique to cnidarians and are used for prey capture, defense, and locomotion. When triggered, nematocysts release a harpoon-like structure that can inject toxins into the prey or predator, allowing cnidarians to capture food or deter potential threats. Cnidoblasts are a defining characteristic of cnidarians and are responsible for their ability to sting, which is a key feature of this phylum.

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
}