Mark the statements as true (T) or false (F).
i) Out of all the species recorded, plants constitute no more than 22% of the total.
ii) The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals.
iii) Insects are the most species-rich taxonomic group.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → i - T, ii - T, iii - T
i) Out of all the species recorded, plants constitute no more than 22% of the total. — True. More than 70 per cent of recorded species are animals. Plants, counted with algae, fungi, bryophytes, gymnosperms and angiosperms, make up no more than 22 per cent.
ii) The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals. — True. Fungi are a very large group of recorded species. Their species outnumber all the fishes, amphibians, reptiles and mammals put together.
iii) Insects are the most species-rich taxonomic group. — True. Insects make up more than 70 per cent of all animal species, so 7 out of every 10 animals are insects.
NCERT Extract:
How Many Species Are There on Earth and How Many in India? – “… 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. … The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals.”