Outside the thallus of Marchantia there are special structures called__________?
Correct answer: B. rhizoids
- A. stem tuber
- B. rhizoids
- C. sporangium
- D. none of these
Explanation
Marchantia is a thalloid liverwort whose underside bears rhizoids that anchor the thallus and help absorb water. Sporangia are reproductive structures, not the hair-like anchoring structures found outside the thallus, so students may select them by confusing support with reproduction.
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Evolution is the heritable change in populations over generations, driven by mutation, recombination, natural selection, genetic drift and reproductive isolation. Questions examine variation, adaptation, survival and reproduction, speciation, fossil and anatomical evidence, and the difference between individual acclimatization and evolutionary change in a population.
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