Practice free Botany NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
According to May's global estimates, what percentage of the total species have been recorded so far?
The text mentions: 'If we accept May’s global estimates, only 22 per cent of the total species have been recorded so far.'
Based on May's estimates and India's recorded diversity, how many plant species are estimated to be yet undiscovered in India?
The text states: 'Applying this proportion to India’s diversity figures, we estimate that there are probably more than 1,00,000 plant species and more than 3,00,000 animal species yet to be discovered and described.'
Which of the following is NOT given as an explanation for why tropics show greater levels of species richness?
The context lists three explanations: 'Tropics had more evolutionary time; they provide a relatively constant environment and, they receive more solar energy which contributes to greater productivity.' Lower predation pressure is not mentioned.
What is the approximate total number of plant and animal species described so far, according to IUCN (2004)?
The text mentions: 'According to the International Union for Conservation of Nature and Natural Resources (IUCN) (2004), the total number of plant and animal species described so far is slightly more than 1.5 million.'
Among the major taxonomic groups, which group comprises more species than the combined total of fishes, amphibians, reptiles, and mammals?
The text states: 'The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals.'
What percentage of all recorded species are animals?
The text specifies: '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.'
What is the primary reason conventional taxonomic methods are not suitable for identifying many prokaryotic species?
The text explains: 'The problem is that conventional taxonomic methods are not suitable for identifying microbial species and many species are simply not culturable under laboratory conditions.'
Which of the following describes the general pattern of species diversity with respect to latitude?
The text states: 'In general, species diversity decreases as we move away from the equator towards the poles.'
Robert May's more conservative and scientifically sound estimate places the global species diversity at approximately:
The text mentions: 'but a more conservative and scientifically sound estimate made by Robert May places the global species diversity at about 7 million.'
What proportion of animals are insects, among the named species?
The text states: 'Of the named species, > 70 per cent are animals, of which 70 per cent are insects.'
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.