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Insects (from Latin insectum) are hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes, and a pair of antennae.
Jul 18, 2024 · Insects are often used in investigations of hormonal action, nerve and sense organ function, and many other physiological processes. Insects are also used as environmental quality indicators to assess water quality and soil contamination and are the basis of many studies of biodiversity.
About Insects. All insects belong to the phylum Arthropoda. But unlike other arthropods—like lobsters, spiders, or millipedes—insects have three pairs of jointed legs, segmented bodies, an ...
Insects (class Insecta) have segmented bodies, jointed legs, and external skeletons. Insects are distinguished from other arthropods by their body, which is divided into three major regions: (1) the head, which bears the mouthparts, eyes, and a pair of antennae, (2) the three-segmented thorax, which usually has three pairs of legs in adults and ...
Oct 16, 2019 · Insects: the Ultimate Guide to the class Insecta. Characteristics of insects, life cycle, evolution, body parts, relationships with other arthropods.
3 days ago · An insect’s outer skeleton, or cuticle, is made of chitin and proteins. This protective layer helps the insect maintain water balance and defend against predators and environmental stressors. The cuticle may also have sensory functions, such as detecting touch or vibrations.
The Encyclopedia of Insects is a comprehensive work devoted to all aspects of insects, including their anatomy, physiology, evolution, behavior, reproduction, ecology, and disease, as well as issues of exploitation, conservation, and management.
Dec 10, 2019 · Basic Insect Anatomy. As you may remember from elementary school, the most basic definition of an insect is an organism with three pairs of legs and three body regions: head, thorax, and abdomen. Entomologists, scientists who study insects, might also add that insects have a pair of antennae and external mouthparts.
Jul 3, 2019 · Insects (Insecta) are the most diverse of all animal groups. There are more species of insects than there are species of all other animals combined. Their numbers are nothing short of remarkable — both in terms of how many individual insects there are, as well as how many species of insects there are. In fact, there are so many insects that ...
Insects are the only invertebrates (animals without backbones) with wings. Much of their success results from their ability to fly and colonise new habitats. The study of insects is called entomology and entomologists are scientists who study insects. Insects play a very important role in the web of life, in every environment.
