Spot the correct spelling of a metamorphic-texture word.

Question

Spot the correct spelling of a metamorphic-texture word.

1. A. Prophyroblastic
2. B. Porphyroblastic (Correct answer)
3. C. Porfyrblastic
4. D. Porphyroblastik

Correct Answer

Option B — Porphyroblastic

Detailed Solution & Explanation

The correct answer is Porphyroblastic.

Key Points

• The term describes a metamorphic rock texture in which large crystals — porphyroblasts — have grown within a finer-grained matrix.
• The spelling follows its Greek parts: porphyro- (from *porphyra*, purple, as in porphyry) + blast (from *blastos*, a bud or growth) + -ic.
• The distractors each break one part: dropping the h from *ph*, replacing *ph* with f, or ending in -ik.

Additional Information

• Porphyry is an igneous rock containing large crystals in a fine matrix; the metamorphic equivalent takes the *-blast* suffix to indicate growth in the solid state.
• The Greek root blast recurs widely in science: osteoblast (bone-forming cell), fibroblast, blastula — recognising it makes several technical spellings predictable.
• Technical spelling questions reward decomposing the word into its roots rather than trying to recall the whole string visually.