Arthropods and Insects Review

In incomplete metamorphosis, the young insect hatches from the egg as a(n)

Nymph

Directly behind the chelicerae, spiders have a pair of appendages called the

Pedipalps

The appendages that scorpions and spiders use to capture and handle their prey are called

Pedipalps

Many spiders are major __________ of insect pests.

Predators

Malphigian tubules in insects

Remove wastes

There are more arthropod species on Earth than all of the other animal species combined

True

Unlike insects, decapods have two pairs of antennae

True

Unlike spiders and scorpions, some mites are herbivorous

True

Spiders typically have

Two body segments and eight legs

All of the following are arthropods except

Clam worms

Insects that undergo __________ metamorphosis go through larval and pupal stages.

Complete

Two small crustaceans that are important food sources in marine food chains are __________ and __________.

Copepods; crill

The appendages of different insect species are adapted for different __________.

Functions

Crustaceans breathe with the aid of __________.

Gills

To grow larger, arthropods must

Grow a new exoskeleton

The mouthparts of members of the subphylum Chelicerata are modified into __________ or pincers.

Fangs

Lyme disease is transmitted through the bite of a

Deer tick

Like insects, arachnids have three body parts

False

Most arachnids are herbivores

False

Most arthropods have well-developed lungs

False

The anatomy of spiders and insects is essentially identical

False

The brown recluse spider gives birth to live young

False

The exoskeleton of arthropods grow larger as the animal grows

False

The eyes of arthropods are very similar to the eyes of humans

False

The grasshopper has only one set if wings

False

The head, thorax, and abdomen of a scorpion are fused into a single, unsegmented body

False

The immature offspring of insects that undergo complete metamorphosis are called nymphs

False

The swimmerets of lobsters and crayfish are attached to their thorax

False

The walking legs of decapods are attached to both the thorax and the abdomen

False

An arthropod sheds its exoskeleton through the process of __________, which is triggered by the release of specific hormones.

Molting

Centipedes belong to the subphylum __________.

Myriapoda

The bodies of all insects are made up of three sections

True

The bodies of arthropods are encased in a shell-like exoskeleton

True

The pedipalps of the brown recluse spider are used to capture and hold prey

True

Like annelids, copepods have

A coelom

In the brown recluse spider, the heart is located in the

Abdomen

Characteristics of arthropods include

All of the above

In what way are lobsters similar to spiders?

All of the above

Jointed appendages of arthropods may

All of the above

The appendages if arthropods

All of the above

Spiders, scorpions, and ticks belong to the class

Arachnida

Arthropod exoskeleton : muscle attachment ::

Arthropod appendages : walking or chewing

A lobster is a member of the phylum __________.

Arthropoda

Bees, spiders, shrimp, and lobsters are all members of the phylum __________.

Arthropoda

The arachnid body is made up of a(n) __________ and an abdomen.

Cephalothorax

Spiders, scorpions, and mites belong to the subphylum

Chelicerata

The exoskeleton of arthropods is made of material called

Chitin

Crabs, lobsters, shrimp, and barnacles are members of the subphylum

Crustacea

The oy arthropods with two pairs of antennae are __________.

Crustaceans

Crayfish : swimmerets and reproduction ::

Crustaceans :: gills for breathing

Shrimps, lobsters, and crabs are examples of

Decapods

Most millipedes feed on

Decayed plants

Some allergies in humans have been linked to

Dust mites

Evolutionary origin of arthropod circulatory system: mollusks ::

Evolution of Arthropoda segmentation : mollusks

Arthropods have an external skeleton called a(n) __________.

Exoskeleton

A crayfish's swimmerets are used only for swimming

False

Air enters the book lungs of the brown recluse spider through slits on the top side of the spider's abdomen

False

All insects have wings

False

All spider bites pose a greater health risk to humans than do tick bites

False

Arachnids have large, powerful jaws that enable them to capture and hold prey

False

Arthropods are divided into subphylum based on the size of animals

False

Arthropods grow through the process of accretion

False

Arthropods may have either an open or closed circulatory sytem

False

Butterflies undergo incomplete metamorphosis

False

Despite their great abundance, copepods play a very small role in the ocean's food web

False

Each body segment of an arthropod has a set of nephridia

False

Except for the number of legs, millipedes and centipedes are basically the same in structure and diet

False

In insects, the thorax houses the heart and the respiratory organs

False

Incomplete metamorphosis is a reproductive strategy that reduces competition between parents and offspring

False

Centipedes

Have one pair of legs per segments and are carnivores

Most insects

Have two pairs of wings and three pairs of legs

The exoskeleton of an insect

Is moved by muscles that are attached to the inside of the exoskeleton

An insect's caste is determined partly by

Its genes

Arthropods were the first animals to have __________ appendages.

Jointed

Spiders : subphylum Chelicerata ::

Lobsters : subphylum Crustacea

A bite from an infected deer tick may cause __________ __________.

Lyme disease

The excretory system of the brown recluse spider is composed of units called

Malphigian tubules

If all copepods died,

Many of our sources of food from the ocean would disappear

Both arthropods and annelids have

Segmented bodies

A similarity between annelids and arthropods is that they both have

Segmented body patterns

Arachnid's second pair of appendages : pedipalps ::

Spider's first pair of appendages : chelicerae

The structures at the end of a spider's abdomen the direct the flow of silk from silk-producing glands are called __________.

Spinnerets

The structures used by spiders to produce silk are called

Spinnerets

Some decapods have a tail spine called a(n) __________.

Telson

Insects have __________ pairs of walking legs.

Three

The insect body is made up of __________ sections.

Three

Arthropods are evolutionarily related to annelids

True

Arthropods grow a new exoskeleton periodically throughout their lives

True

Arthropods share the property of segmentation with annelids

True

Because of the presence of fangs, spiders belong to the subphylum Chelicerata

True

Complete metamorphosis includes a pupa stage passed inside a chrysalis

True

Crustaceans range in size from microscopic forms to huge lobsters

True

Horshoe crabs belong to the same subphylum as spiders and mites

True

Insects were the first a animals to evolve wings

True

Members of the phylum Arthropoda have open circulatory sytems

True

More than 50% of all named animal species are insects

True

Most crustaceans are aquatic

True

Most terrestrial Arthropoda respire through a network of fine tubes called tracheae

True

Pedipalps enable arachnids to capture and hold prey

True

Scorpions, spiders, and mites are evolutionarily linked by the presence of chelicerae and pedipalps

True

The antennae of the grasshopper are sense organs used for both touch and smell

True