Advertisements
Advertisements
Question
How do scientists extrapolate the total number of species on Earth?
Advertisements
Solution
Scientists make a statistical comparison of the temperate-tropical species richness of an exhaustively studied group of insects and extrapolate this ratio to other groups of animals and plants to come up with a gross estimate of the total number of species on earth.
APPEARS IN
RELATED QUESTIONS
How do ecologists estimate the total number of species present in the world?
Which of the following is not an invasive alien species in the Indian context?
Where among the following will you find pitcher plant?
What is common to the following plants nepenthes, psilotum, Rauwolfia and acontium?
The one - homed rhinoceros is specific to which of the following sanctuary?
Which one of the following is an endangered plant species of India?
What is the expanded form of IUCN?
What could be the possible explanation for greater vulnerability of amphibians to extinction as compared to other animal groups?
Given below is a 'pie chart' representing the global biodiversity:
Proportionate number of species of major taxa.
- Identify (X) and (Y) in the given 'pie chart'.
- "Extinction of species across taxa are not random." Which group amongst the vertebrates is more vulnerable to extinction?
- Give one example of each of the recent extinctions of species in Russia, Mauritius and Australia.
Give three reasons as to why the prokaryotes are not given any figures for their diversity by ecologists.
What is the scientifically sound estimate of global species diversity made by Robert May?
What is the approximate percentage of recorded species that plants account for globally?
What percentage of the world's land area does India occupy?
What percentage of global species diversity is found in India?
How many plant species have been recorded from India?
What is India's global biodiversity status?
Based on Robert May's estimate that 22% of total species have been recorded globally, how many plant species may India have yet to discover and describe?
Why are molecular criteria mentioned as important for classifying prokaryotes?
