SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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are invertebrates
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are arthropods
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have jointed legs
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all of these
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Detailed explanation-1: -In terms of numbers of species, insects certainly represent the largest percentage of the world’s organisms. There are more than 1 million species of insects that have been documented and studied by scientists.
Detailed explanation-2: -Insects (Insecta) Ants have colonised almost every landmass on Earth. Their population is estimated as between 1016–1017 (10-100 quadrillion). With an estimated 20 quadrillion ants their biomass comes to 12 megatons of dry carbon, which is more than all wild birds and mammals combined.
Detailed explanation-3: -Over 1.5 million living animal species have been described-of which around 1 million are insects-but it has been estimated there are over 7 million animal species in total. Animals range in length from 8.5 micrometres (0.00033 in) to 33.6 metres (110 ft).