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Current Question (ID: 12200)

Question:

The members of phaeophyceae are characterized by all, except

Options:

1. Presence of chlorophyll a, c and fucoxanthin pigments.
2. Production of pear-shaped and biflagellated asexual spores.
3. Production of pyriform gametes that bear laterally attached flagella.
4. Their occurrence, mostly in fresh water habitats.

Solution:

Members of Phaeophyceae, which are commonly known as brown algae, are not typically found in fresh water habitats. Brown algae are primarily marine algae that are commonly found in colder marine environments, such as temperate and subarctic regions of the world's oceans. They are characterized by their large size and complex morphology, which includes a holdfast for attachment, a stipe for support, and fronds or blades for photosynthesis.

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
}