Numerical: Species-area
If a region shows a species-area relationship of S = 5A^0.25 (where S = number of species, A = area in km²), how many species are predicted in a 256 km² area?
Select the correct option:
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
More diversity in living world Practice Questions
Sponges of the phylum Porifera maintain a continuous water current through their body by means of a ...
Sponges of the phylum Porifera maintain a continuous water current through their body by means of a ...
Coelenterates such as Hydra capture prey and defend themselves using specialised stinging cells; wha...
Coelenterates such as Hydra capture prey and defend themselves using specialised stinging cells; wha...
Roundworms belonging to phylum Aschelminthes represent an evolutionary advance over flatworms primar...
Roundworms belonging to phylum Aschelminthes represent an evolutionary advance over flatworms primar...
Arthropoda is considered the largest phylum in the animal kingdom; which combination of features chi...
Arthropoda is considered the largest phylum in the animal kingdom; which combination of features chi...
Three fundamental characters are shared by every chordate at some stage of life; which set correctly...
Three fundamental characters are shared by every chordate at some stage of life; which set correctly...
If the estimated number of described species on Earth is about 1.7 million and animals constitute ro...
If the estimated number of described species on Earth is about 1.7 million and animals constitute ro...
Certain prokaryotes survive in extreme salt-rich lakes, hot sulphur springs and the guts of ruminant...
Certain prokaryotes survive in extreme salt-rich lakes, hot sulphur springs and the guts of ruminant...
Rapid proliferation of certain photosynthetic dinoflagellates in coastal waters can turn the sea red...
Rapid proliferation of certain photosynthetic dinoflagellates in coastal waters can turn the sea red...
A fungus reproducing sexually through ascospores borne inside sac-like asci, exemplified by Penicill...
A fungus reproducing sexually through ascospores borne inside sac-like asci, exemplified by Penicill...
In a lichen partnership growing on a bare rock surface, the photosynthetic algal partner contributes...
In a lichen partnership growing on a bare rock surface, the photosynthetic algal partner contributes...
Investigations on the tobacco mosaic virus revealed that its genetic material differs from that of m...
Investigations on the tobacco mosaic virus revealed that its genetic material differs from that of m...
Members of the brown algae owe their characteristic colouration to the dominance of a specific acces...
Members of the brown algae owe their characteristic colouration to the dominance of a specific acces...
About This Question
- Subject
- biology
- Chapter
- diversity in living world
- Topic
- numerical: species-area
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
20
- Formula: S=C⋅Az, given as S=5⋅A0.25.
- Input Value: A=256 km2.
- Calculation:
- S=5×(256)0.25
- Note that exponent 0.25 is the same as the fourth root (4A).
- Fourth root of 256: We know 4×4=16, 16×4=64, 64×4=256. So, 4256=4.
- S=5×4=20.
- Conclusion: 20 species are predicted in this area.
This hard difficulty biology question is from the chapter diversity in living world, covering the topic of numerical: species-area. It appeared in the 2025 exam.
Looking for more practice? Explore all biology questions or browse diversity in living world questions on RankGuru.