What is defined as an insect?

noun. in·​sect ˈin-ˌsekt. : any of a group of small and often winged animals that are arthropods having six jointed legs and a body formed of a head, thorax, and abdomen. Flies, bees, and lice are true insects. : an animal (as a spider or a centipede) similar to the true insects.

What are 5 characteristics of insects?

Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel.

What is insect called?

What are insects for kids definition?

Insects are creatures that have bodies with three segments that are protected by a hard shell. They have three pairs of legs and a pair of antennae. Most insects have two pairs of wings, too. There are lots and lots of kinds of insects and they can all be very different from each other.

What are the importance of insects?

Insects are important for pollinating crops we use for food, as a food source themselves in some countries, and decomposing dead material to recycle nutrients. Insects are also important because of the damage they can cause to humans. Some insects spread disease; others can decimate our food supply.

What are the 7 main characteristics of insects?

Characteristics of Insects

Insects have jointed appendages as arthropods (arthropod means “jointed foot”), an exoskeleton (hard, external cover), segmented body, ventral nervous system, digestive system, open circulatory system, and advanced sensory receptors.

What is an insect 2nd grade?

Insects are characterized by three-part bodies, usually two pairs of wings, and three pairs of legs, and two antennae (e.g., bees and mosquitoes). Insects are members of a group animal called the arthropods. This group also includes spiders and lobsters. Insects do not have a skeleton inside their body.

What is the classification of an insect?

Arthropoda
Insects belong to a larger group call Arthropoda which includes all animals with segmented legs, segmented bodies and exoskeletons. The phylum Arthropoda includes: spiders, ticks, mites, centipedes, millipedes, shrimps, lobsters, and many other organisms.

What are 3 characteristics that define insects?

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).

What are the common character of insects?

Even though insects and other arthropods, such as lobsters, do not look alike, all arthropods share the following characteristics:
  • A segmented body… …
  • Paired segmented appendages (legs)
  • Bilateral symmetry (the right and left half look the same)
  • An external skeleton that is molted as the animal grows.

What are insects 5 examples?

  • examples of insects [5] Insects: invertebrates with bodies divided into three parts; they usually have three pairs of legs, two pairs of wings and antennae.
  • burying beetle. …
  • furniture beetle. …
  • flea. …
  • tsetse fly. …
  • mosquito. …
  • louse.

Which of the following is the characteristic of insects?

The following are characteristics of insects: (i) They undergo complete metamorphosis. (ii) They have 1 or 2 pairs of wings. (iii) They have 3 pairs of jointed legs. (iv) Their bodies are divided into 3 main parts.

What is the classification of an insect?

Arthropoda
Insects belong to a larger group call Arthropoda which includes all animals with segmented legs, segmented bodies and exoskeletons. The phylum Arthropoda includes: spiders, ticks, mites, centipedes, millipedes, shrimps, lobsters, and many other organisms.

What are 3 facts about insects?

Insects have six legs that are attached to the middle section of the body, the thorax. Insects are the only arthropods that have wings, and the wings are always attached to the thorax, like the legs. insects that have incomplete metamorphosis. The number of insect species is believed to be between six and ten million.