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