Question

Enlist harmful arthropods?​

Answer 1

Answer:

Arthropods are animals that are members of the phylum Arthropoda. More than 80% of all of the animals in the world are arthropods. With such a large group of animals, there is quite a lot of diversity - and quite a lot of examples - but they do have some similar traits:

Invertebrates

An exoskeleton, or external, skeleton made of chitin and it is covered with a thick protective layer, or cuticle

Segmented bodies

Six legs or more which are jointed. In fact, their name comes from the Greek words for "joint" and "foot."

Basic Categories of Arthropods

Here are some basic examples of arthropods sorted by the non-extinct subphyla:

Chelicerata: horseshoe crabs, spiders, scorpions, sea spiders and mites

Myriapoda: millipedes, centipedes, pauropods and symphylans (known as glasshouse symphylans or garden centipedes)

Crustacea: brine shrimp, barnacles, lobsters, crabs, shrimp and remipedes

Hexapoda: insects and three orders of entognatha: collembola, proturans and diplura

Reproductive methods are diverse among arthropods but most begin life as an egg. As they grow, their exoskeleton splits in the back and the arthropod slips out of it and grows another one which is bigger. This process can take from a few minutes to several hours, during which time they are vulnerable to predators.

Types of Arthropods

A large majority of arthropods belong to the three main groups:

Insects

Arachnids

Crustaceans

Insects (Subphylum Hexapoda)

Since there are three-quarters of a million insect species, it's best to just look at some of the common ones. They include:

Ants

Aphids

Beetles

Butterflies

Cicadas

Cockroaches

Dragonflies

Fleas

Flies

Grasshoppers

Leaf hoppers

Lice

Mayflies

Praying mantis

Stink bugs

Silverfishes

Termites

Walking sticks

All insects have six legs which are arranged in pairs. They also have two antennae and most of them have two compound eyes. Typically you will find two pairs of wings on insects, with some of them having only one pair, like flies. A few insects have no wings, like ants, fleas, and lice. Insects are the only invertebrates that can fly.

Arachnids (Subphylum Chelicerata)

The three main orders of arachnids are:

Scorpionida (scorpions)

Acarina (ticks and mites)

Araneae (spiders)

There are over 100,000 species of arachnids. Common ones include:

Black widow spider

Brown recluse

Chiggers

Crab spiders

Daddy longlegs

Harvestmen

Mites

Orb weavers

Scorpions

Spiders

Ticks

Vinegaroons

Whip tailed scorpions

Wind scorpions

Arachnids are eight-legged arthropods with no wings or antennae. Most arachnids live on land; but, a few species can be found in fresh and salt water habitats.

Answer 2

Arthropods can be useful and harmful both for humans.

Explanation:

• Arthropods are the invertebrates that come under the phylum Arthropoda. Insects, arachnids, myriapods, and crustaceans are the major groups of this phylum. It is the largest phylum in the animal kingdom.
• Arthropods can be harmful and useful for humans and other organisms. Some harmful arthropods are Arizona Bark Scorpion, Black Widow scorpions, centipede, Tarantula, etc. These species of arthropods can inject poison in humans and can harm humans.
• Some arthropods are responsible for spreading malaria, Lyme, yellow fever, encephalitis for example mosquitoes.

Learn more about arthropods:

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