Earth's Biodiversity Distribution — NEET Biology
📚 Practice ConceptLet us look at some interesting aspects about earth's biodiversity based on the currently available species inventories. More than 70 per cent of all the species recorded are animals, while plants (including algae, fungi, bryophytes, gymnosperms and angiosperms) comprise no more than 22 per cent of the total. Among animals, insects are the most species-rich taxonomic group, making up more than 70 per cent of the total. That means, out of every 10 animals on this planet, 7 are insects. Again, how do we explain this enormous diversification of insects? The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals. In, biodiversity is depicted showing species number of major taxa.
Assertion (A): Plants comprise the majority of recorded species on Earth. Reason (R): Plants include algae, fungi, bryophytes, gymnosperms and angiosperms.
View solution & NCERT explanation
Correct answer: D — If the assertion is false but the reason is true.
NCERT explicitly states “More than 70 per cent of all the species recorded are animals, while plants (including algae, fungi, bryophytes, gymnosperms and angiosperms) comprise no more than 22 per cent of the total.” The Assertion is false - animals comprise the majority (>70%), not plants (22%). The Reason is true from NCERT’s definition of what constitutes plants in this context.
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