The species are _________ extinct if they persist at such reduced numbers that their effect on other species is negligible.

• Ecologically
• Endemically
• None of these
• Locally

Related MCQs

• Males of one species are too small to perform amplexus (an action that stimulates ovulation) with females of all other species. What sort of barrier exists between these two species?
• According to ESA, the species that is likely to become extinct is called?
• About what percentage of all species that have ever lived are now extinct?
• The species which are very likely to become extinct in near future are called ______?
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• Plants and the animal species which are in danger of extinct on are called _____?
• Females of one species choose mates based on song quality; females of another species choose mates on the basis of size. What sort of barrier exists between these two species?
• What is the term for a harmless species mimicking a more harmful species to avoid predators?
• Biological species concept depends upon ________ for determining species boundaries?
• Species ______ refers to measure which qualifies as to how even species are in terms of their number.