What are the four types of insects?
The most diverse insect orders are the Hemiptera (true bugs), Lepidoptera (butterflies and moths), Diptera (true flies), Hymenoptera (wasps, ants, and bees), and Coleoptera (beetles), each with more than 100,000 described species. An insect has three body parts. The front part is called the head. The middle part is called the thorax. The last part is called the abdomen.Crickets, ants, grasshoppers, butterflies, ladybugs and bees are some common insects. Insects are invertebrates, so they do not have a skeleton like we do. Some insects, like caterpillars, can change as they grow. Insects have six legs and three body parts.
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. Awesome, now you know that all insects have three body parts: a head, a thorax, an abdomen, they have six legs, they have a pair of antennae, and they have zero or two pairs of wings. Now that we know the features that all insects share let’s take a look at some animals and figure out which one is an insect.The three main insect body parts are head, thorax, and abdomen. The head contains the antennae, eyes, and mouthparts. The thorax is the middle body part to which the legs and wings are attached.
How many types of insects are there?
In the world, some 900 thousand different kinds of living insects are known. This representation approximates 80 percent of the world’s species. The true figure of living species of insects can only be estimated from present and past studies. Ten quintillion — that’s the estimated number of insects alive at any given time in the world. Insects make up a whopping 80 percent of the world’s known animal species.Insects are the largest group of animals on Earth by far: about 926,400 different species have been described. They are more than half of all known living species. They may be over 90% of animal species on Earth. New species of insects are continually being found.The heaviest insect in the world is the Giant wētā, a type of grasshopper that can reach 71g in weight, about the same as a well-fed gerbil. The giant insect is found in New Zealand, where it has remained unchanged for 70 million years.
What are the 4 stages of an insect?
Insects fall into one of two categories depending upon their life styles: 4 stage life cycle (complete metamorphosis). The four stages are egg, larva, pupa and adult. The change in form that insects undergo as they develop is called metamorphosis. The life cycles of most insects fall into one of three general types: simple (or gradual) metamorphosis, intermediate metamorphosis, and complete metamorphosis (Gillot, 2005).
How many types of plants are known?
There are about 380,000 known species of plants, of which the majority, some 260,000, produce seeds. They range in size from single cells to the tallest trees. There are about 382,000 accepted species of plants, of which the great majority, some 283,000, produce seeds. The table below shows some species count estimates of different green plant (Viridiplantae) divisions.
What are the 4 main groups of plants?
The plant kingdom is traditionally classified into several major groups, including bryophytes (mosses, liverworts, hornworts), seedless vascular plants (ferns, clubmosses, horsetails), gymnosperms (conifers, cycads, ginkgos), and angiosperms (flowering plants). The four main plant divisions are the following: bryophytes, angiosperms, gymnosperms, and pteridophytes. Bryophytes are composed of non-vascular, seedless plants such as mosses, hornworts, and liverworts.Plants can be classified into two main groups: flowering plants and non-flowering plants. Flowering plants are plants that can bear flowers while non-flowering plants are plants that cannot bear flowers. Plants can also be classified into other groups such as land plants and aquatic plants (water plants).While there are many ways to structure plant classification, one way is to group them into vascular and non-vascular plants, seed bearing and spore bearing, and angiosperms and gymnosperms. Plants can also be classified as grasses, herbaceous plants, woody shrubs, and trees.Plant kingdom includes algae, bryophytes, pteridophytes, gymnosperms and angiosperms. Algae are chlorophyll-bearing simple, thalloid, autotrophic and largely aquatic organisms.Note: Thallophytes are simple autotrophic nonvascular plants. Bryophytes are called the amphibians of the plant kingdom. Pteridophytes are the plants with ferns without seed or flowers. Angiosperms are flowering plants.