Question 1

The nervous system of an insect consists of

Accepted Answer

A) a brain where all ganglia extend out to communicate with each organ. 
B) a minimal brain with neurosecretory functions and a nerve cord with ganglia extending down the dorsum. 
C) a minimal brain with neurosecretory functions and a nerve cord with ganglia extending down the ventral surface. 
D) no brain but coordination handled by ganglia in each segment and a nerve ladder for coordination. 
E) None of the choices is correct. 
A) a brain where all ganglia extend out to communicate with each organ. 
B) a minimal brain with neurosecretory functions and a nerve cord with ganglia extending down the dorsum. 
C) a minimal brain with neurosecretory functions and a nerve cord with ganglia extending down the ventral surface. 
D) no brain but coordination handled by ganglia in each segment and a nerve ladder for coordination. 
E) None of the choices is correct. C

Question 2

Fleas and springtails both lack wings

Accepted Answer

A) because they never evolved wings and are both primitive insects. 
B) because they are both parasites and lost wings from winged ancestors. 
C) fleas are primitive but springtails lost wings when they gained their springtails. 
D) springtails never had wings but fleas are derived from winged fly-like ancestors and secondarily lost wings when they became parasites. 
E) None of the choices is correct. 
A) because they never evolved wings and are both primitive insects. 
B) because they are both parasites and lost wings from winged ancestors. 
C) fleas are primitive but springtails lost wings when they gained their springtails. 
D) springtails never had wings but fleas are derived from winged fly-like ancestors and secondarily lost wings when they became parasites. 
E) None of the choices is correct. D

Question 3

In insects,the genital appendages are located

Accepted Answer

A) at the end of the abdomen. 
B) on the thorax next to the abdomen. 
C) on the abdomen near the thorax. 
D) in many locations including the pedipalps as occurs in spiders. 
E) None of the choices is correct. 
A) at the end of the abdomen. 
B) on the thorax next to the abdomen. 
C) on the abdomen near the thorax. 
D) in many locations including the pedipalps as occurs in spiders. 
E) None of the choices is correct. A

Question 4

Primitively wingless hexapods are the

Accepted Answer

A) neuropterans. 
B) thysanurans. 
C) zorapterans. 
D) isopterans. 
E) hemipterans. 
A) neuropterans. 
B) thysanurans. 
C) zorapterans. 
D) isopterans. 
E) hemipterans.

Question 5

The exoskeleton of insects is

Accepted Answer

A) very soft and pliable. 
B) rigid due to deposits of calcium. 
C) rigid due to chitin. 
D) rigid due to unique scleroproteins. 
E) variable depending on the thickness of the chitin. 
A) very soft and pliable. 
B) rigid due to deposits of calcium. 
C) rigid due to chitin. 
D) rigid due to unique scleroproteins. 
E) variable depending on the thickness of the chitin.

Question 6

Insect tracheae are kept from collapsing by

Accepted Answer

A) having walls of thick chitin. 
B) having spirals of cuticle called taenidia. 
C) being filled with water all the way to the spiracle. 
D) being inflated and under higher air pressure. 
E) being wrapped in insect muscle. 
A) having walls of thick chitin. 
B) having spirals of cuticle called taenidia. 
C) being filled with water all the way to the spiracle. 
D) being inflated and under higher air pressure. 
E) being wrapped in insect muscle.

Question 7

The dorsal sclerite of a body segment is the ________________.

Accepted Answer

The answer of The dorsal sclerite of a body segment...

Question 8

When a parasitic insect is itself parasitized by another insect,

Accepted Answer

A) this is called a superparasite. 
B) this is hyperparasitism. 
C) this is co-parasitism. 
D) the second parasite is a parasitoid. 
E) the first insect is the host-parasite. 
A) this is called a superparasite. 
B) this is hyperparasitism. 
C) this is co-parasitism. 
D) the second parasite is a parasitoid. 
E) the first insect is the host-parasite.

Question 9

What adaptations do insects have that make the use of respiratory pigments unnecessary or of less value?

Accepted Answer

Insects have developed a highly efficien

Question 10

How is an insect circulatory system best described?

Accepted Answer

A) The open system uses a dorsal aorta and accessory pulsatory organs to push hemolymph through the body cavities and wings,etc.but the hemolymph has little respiratory function. 
B) The system is totally closed like ours with arteries and veins and the amebocytes aid in respiratory function. 
C) The system is similar to ours with general closed sinuses but no distinct arteries and veins. 
D) A circulatory system is totally absent and each body cell is on its own to gain food and get rid of wastes. 
E) None of the choices is correct. 
A) The open system uses a dorsal aorta and accessory pulsatory organs to push hemolymph through the body cavities and wings,etc.but the hemolymph has little respiratory function. 
B) The system is totally closed like ours with arteries and veins and the amebocytes aid in respiratory function. 
C) The system is similar to ours with general closed sinuses but no distinct arteries and veins. 
D) A circulatory system is totally absent and each body cell is on its own to gain food and get rid of wastes. 
E) None of the choices is correct.

Question 11

Brain hormone stimulates the ________ _________ to secrete ecdysone.

Accepted Answer

The answer of Brain hormone stimulates the ________ _________ to...

Question 12

The majority of insects are phytophagous or ______________,which means that they feed on plant juices or tissues.

Accepted Answer

The answer of The majority of insects are phytophagous or...

Question 13

The class Insecta

Accepted Answer

A) has more species than any other group of animals. 
B) is of major medical importance to humans. 
C) is of major economic importance to humans. 
D) are critical in ecology that the loss of all insects would cause a major disruption in nature. 
E) All of the choices are correct. 
A) has more species than any other group of animals. 
B) is of major medical importance to humans. 
C) is of major economic importance to humans. 
D) are critical in ecology that the loss of all insects would cause a major disruption in nature. 
E) All of the choices are correct.

Question 14

Which is NOT a correct association of mouthparts and insect?

Accepted Answer

A) Sucking mouthparts-water scorpion 
B) Sponging mouthparts-house fly 
C) Biting mouthparts-grasshopper 
D) Sponging mouthparts-butterfly 
E) Sucking mouthparts-mosquito 
A) Sucking mouthparts-water scorpion 
B) Sponging mouthparts-house fly 
C) Biting mouthparts-grasshopper 
D) Sponging mouthparts-butterfly 
E) Sucking mouthparts-mosquito

Question 15

A genetically programmed arrest in development of some insects is called _____________.

Accepted Answer

The answer of A genetically programmed arrest in development of...

Question 16

In honeybees,the caste of sexually mature males are called ______________.

Accepted Answer

The answer of In honeybees,the caste of sexually mature males...

Question 17

At the lower end of the Malpighian tubule,the pH becomes slightly acid,which causes the _________ __________ to precipitate out.

Accepted Answer

The answer of At the lower end of the Malpighian...

Question 18

Insects differ from other arthropods because insects

Accepted Answer

A) have paired,jointed legs. 
B) have ectognathous mouthparts. 
C) have a single pair of antennae. 
D) have mandibles. 
E) have tagmata or fused segments. 
A) have paired,jointed legs. 
B) have ectognathous mouthparts. 
C) have a single pair of antennae. 
D) have mandibles. 
E) have tagmata or fused segments.

Question 19

Insect wings are

Accepted Answer

A) an extension of the cuticle formed by the epidermis. 
B) a double membrane stiffened with veins. 
C) reduced to a pair of wings and a pair of balancing halteres in true flies. 
D) a feature of adult but not larval insects. 
E) All of the choices are correct. 
A) an extension of the cuticle formed by the epidermis. 
B) a double membrane stiffened with veins. 
C) reduced to a pair of wings and a pair of balancing halteres in true flies. 
D) a feature of adult but not larval insects. 
E) All of the choices are correct.

Question 20

Wing muscles that are attached to the wing itself are considered ____________ flight muscles.

Accepted Answer

The answer of Wing muscles that are attached to the...

Exam 21: Hexapods

The nervous system of an insect consists of

Fleas and springtails both lack wings

In insects,the genital appendages are located

Primitively wingless hexapods are the

The exoskeleton of insects is

Insect tracheae are kept from collapsing by

The dorsal sclerite of a body segment is the ________________.

When a parasitic insect is itself parasitized by another insect,

What adaptations do insects have that make the use of respiratory pigments unnecessary or of less value?

How is an insect circulatory system best described?

Brain hormone stimulates the ________ _________ to secrete ecdysone.

The majority of insects are phytophagous or ______________,which means that they feed on plant juices or tissues.

The class Insecta

Which is NOT a correct association of mouthparts and insect?

A genetically programmed arrest in development of some insects is called _____________.

In honeybees,the caste of sexually mature males are called ______________.

At the lower end of the Malpighian tubule,the pH becomes slightly acid,which causes the _________ __________ to precipitate out.

Insects differ from other arthropods because insects

Insect wings are

Wing muscles that are attached to the wing itself are considered ____________ flight muscles.

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectual Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Chaetognaths, echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, Protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distribution

Animal Ecology

Filters

Brain hormone stimulates the _ to secrete ecdysone.

At the lower end of the Malpighian tubule,the pH becomes slightly acid,which causes the _ __ to precipitate out.