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.

insect, (class Insecta or Hexapoda), any member of the largest class of the phylum Arthropoda, which is itself the largest of the animal phyla. Insects have segmented bodies, jointed legs, and external skeletons (exoskeletons).

2025年2月6日 · Insects (class Insecta) have segmented bodies, jointed legs, and external skeletons.

2019年10月16日 · Discover the characteristics of insects, their life-cycles, the roles they play in their ecosystems, and why they are so important for life on Earth… What Is An Insect? How Do Insects Breathe? Why Are Insects Important? Click on the image above to download your free quiz sheet! How well do you know insects?

2025年3月11日 · What is an insect with examples, classification, characteristics, & body parts. Do they have brains, hearts, lungs, or blood. What do they eat. How do they breathe.

Insects are vital to every ecosystem. They pollinate plants, decompose plant and animal matter, and are themselves a source of food. Birds alone are estimated to eat 400 to 500 million...

The body of an insect has three main parts: a head, a thorax, and an abdomen. On the head are an insect's compound eyes , its two antennae (they feel and smell things), and its mouth. On the thorax, insects have wings and legs.

There are over 1 million identified species of insects and spiders in the world with many more still awaiting discovery. Insects provide a vastly overlooked - and often times misunderstood - window into our fragile ecosystem that involves the perfect balance of millions of individual components.

2024年6月8日 · Insect Orders: Insects are an incredibly diverse group of arthropods in the class Insecta. They are characterized by their three-part bodies (head, thorax, and abdomen), three pairs of jointed legs, compound eyes, and antennae.

5 天之前 · An insect is described as an air-breathing animal with a hard-jointed exoskeleton and (in the adult) a body divided into three parts: The insect head with one pair of antennae. The insect thorax carries three pairs of legs and usually two pairs of wings.