Think You Know Insects? Try These Entomology Quiz Questions And Answers Now

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  • 1/250 Questions

    Which of the following arthropods is not an insect

    • Scorpion
    • Fly
    • Cockroach
    • Dragonfly
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About This Quiz


Here's a fun and interesting entomology quiz with questions and answers. Entomology is a branch of zoology that deals with the scientific study of insects. Do you think you are an expert on this subject?
Will you be able to correctly respond to each inquiry on this test?
Let's use this fantastic quiz to test your knowledge today.
Consider this test a challenge and see how well you can perform.
Good luck with it!

Think You Know Insects? Try These Entomology Quiz Questions And Answers Now - Quiz

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  • 2. 

    The insect abdomen contains:

    • All of the above

    • Organs for excretion

    • The reproductive tract

    • The digestion tract

    Correct Answer
    A. All of the above
    Explanation
    The insect abdomen contains all of the above mentioned structures. It houses organs for excretion, such as Malpighian tubules, which help in removing waste materials from the insect's body. The reproductive tract is also located in the abdomen, where the insect's reproductive organs are found. Additionally, the digestion tract, including the stomach and intestines, is present in the abdomen, where the insect processes and absorbs nutrients from its food. Therefore, all of these structures can be found in the insect abdomen.

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  • 3. 

    Insects that pass through the egg, larva, pupa, and adult stages in their life cycle have_________________.

    • Incomplete metamorphosis

    • No metamorphosis

    • Complete metamorphosis

    • Gradual metamorphosis

    Correct Answer
    A. Complete metamorphosis
    Explanation
    Insects that pass through the egg, larva, pupa, and adult stages in their life cycle have complete metamorphosis. This means that they undergo a distinct and dramatic change in their physical form as they progress through these stages. The larva stage is typically characterized by a worm-like appearance, while the pupa stage involves the insect transforming into a resting state inside a protective casing. Finally, the adult stage is when the insect emerges from the pupa as a fully developed adult with wings and reproductive capabilities. This complete metamorphosis allows for significant changes in the insect's anatomy and behavior between each stage.

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  • 4. 

    In which of the following insects do only the females suck blood?

    • Louse

    • Bedbug

    • Mosquito

    • Flea

    Correct Answer
    A. Mosquito
    Explanation
    Mosquitoes are the only insects among the given options where only the females suck blood. Female mosquitoes require blood meals to obtain the necessary nutrients for egg development. They have specialized mouthparts called proboscis that allow them to pierce the skin and feed on the blood of animals, including humans. Male mosquitoes, on the other hand, feed only on nectar and plant juices. Therefore, mosquitoes are unique in their blood-feeding behavior compared to lice, bedbugs, and fleas, where both males and females engage in bloodsucking.

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  • 5. 

    What is the branch of science concerned with describing, naming, and classifying organisms?

    • Speciation

    • Taxonomy

    • Phylogeny

    • Zoology

    Correct Answer
    A. Taxonomy
    Explanation
    Taxonomy is the branch of science concerned with describing, naming, and classifying organisms. It involves organizing living organisms into hierarchical categories based on their characteristics and evolutionary relationships. Taxonomy helps scientists understand the diversity of life on Earth and provides a systematic way to identify and study different species. It also aids in the development of classification systems and helps in the identification and naming of new species. Therefore, taxonomy is the correct answer to the question.

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  • 6. 

    Functions of the insect hemolymph includes:

    • Wasted removal to excretory organs

    • Hormone transport

    • Distribution of nutrients from the gut

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    The insect hemolymph serves multiple functions, including the removal of waste to excretory organs, the transport of hormones, and the distribution of nutrients from the gut. Therefore, the correct answer is "all of the above" as all of these functions are performed by the insect hemolymph.

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  • 7. 

    An insect has a protective cuticle that allows it to ______________.

    • Produce biological defense compounds (immune response)

    • Use chemo-and mechano-receptors

    • Self-repair (if damaged)

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    The correct answer is "all of the above." An insect's protective cuticle serves multiple functions. It not only allows the insect to produce biological defense compounds as part of its immune response, but it also enables the insect to use chemo-and mechano-receptors to sense its environment. Additionally, the cuticle has the ability to self-repair if it gets damaged. Therefore, all of these options are valid functions of an insect's protective cuticle.

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  • 8. 

    A caterpillar of the cabbage butterfly is a common pest of _______________.

    • Flowers

    • Turfgrass

    • Vegetables

    • Shrubs

    Correct Answer
    A. Vegetables
    Explanation
    The caterpillar of the cabbage butterfly is a common pest of vegetables. This is because cabbage butterflies lay their eggs on the leaves of various vegetable plants, such as cabbage, broccoli, and kale. Once the eggs hatch, the caterpillars feed on the leaves, causing damage to the plants. Therefore, vegetables are the preferred host for the cabbage butterfly caterpillar.

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  • 9. 

    What is a hematophagous insect?

    • One that feeds on saliva

    • One that feeds on bone

    • One that feeds on blood

    • One that feed on hair

    Correct Answer
    A. One that feeds on blood
    Explanation
    A hematophagous insect is an insect that feeds on blood. This means that it obtains its nutrition by sucking blood from other animals. Examples of hematophagous insects include mosquitoes, ticks, fleas, and bed bugs. These insects have specialized mouthparts that allow them to pierce the skin of their host and extract blood. They rely on blood as their primary source of nutrients and often play a role in the transmission of diseases.

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  • 10. 

    Why do insects molt?

    • To grow

    • To change from one instar to another

    • All of the above

    • To complete a step in metamorphosis

    Correct Answer
    A. All of the above
    Explanation
    Insects molt for multiple reasons. One reason is to grow, as they need to shed their old exoskeleton and replace it with a larger one in order to accommodate their increasing size. Additionally, insects molt to transition from one instar to another, which is a developmental stage in their life cycle. Lastly, molting is also a necessary step in the process of metamorphosis, where insects undergo significant changes in their body structure and form. Therefore, all of the given options are correct explanations for why insects molt.

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  • 11. 

    What are some characteristics of social insects?

    • Reproductive division of labor

    • All of these are characterics of social insects

    • Usually associated with a confined space like a nest

    • Cooperative care of the young

    Correct Answer
    A. All of these are characterics of social insects
    Explanation
    Social insects exhibit a reproductive division of labor, meaning that different individuals within the colony have different roles in reproduction. This division of labor allows for efficient organization and specialization within the colony. Additionally, social insects are usually associated with a confined space like a nest, where they live and work together. They also engage in cooperative care of the young, where multiple individuals contribute to the care and protection of the offspring. Overall, all of these characteristics are commonly observed in social insects.

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  • 12. 

    _____________________ can be used as biological control agents to help control pests.

    • Lacewings

    • Parasitic wasps

    • All of these

    • Ladybird beetles

    Correct Answer
    A. All of these
    Explanation
    All of these options can be used as biological control agents to help control pests. Lacewings, parasitic wasps, and ladybird beetles are all natural predators of many common pests, such as aphids, mites, and caterpillars. These beneficial insects can be introduced into agricultural or garden environments to help reduce pest populations without the need for chemical pesticides. By preying on pests, they help to maintain a natural balance in ecosystems and can be an effective and environmentally friendly approach to pest control.

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  • 13. 

    The following sections are parts of an insect􀂶s leg:

    • Coxa, trochanter, femur, tibia and tarsus

    • Clypeus, corium, tegula and cornicle

    • Coxa, femur, tibia and mentum

    • Tegula, cornicle, frenulum, petiole

    Correct Answer
    A. Coxa, trochanter, femur, tibia and tarsus
    Explanation
    The correct answer is coxa, trochanter, femur, tibia, and tarsus. These are the different sections of an insect's leg. The coxa is the base or attachment point of the leg, followed by the trochanter which acts as a hinge joint. The femur is the longest segment of the leg, followed by the tibia which is shorter and thinner. Finally, the tarsus is the last section and is made up of several segments, often ending in claws or other structures used for gripping surfaces.

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  • 14. 

    The father of modern taxonomy who created the binomial system of nomenclature was ________.

    • Carl linnaeus

    • Charles darwin

    • Thomas say

    • May berenbaum

    Correct Answer
    A. Carl linnaeus
    Explanation
    Carl Linnaeus is considered the father of modern taxonomy because he developed the binomial system of nomenclature, which is still used today. This system assigns each species a unique two-part scientific name consisting of its genus and species. Linnaeus's work revolutionized the classification and naming of organisms, providing a standardized and organized approach to categorizing the vast diversity of life on Earth. His contributions laid the foundation for modern biological classification and taxonomy.

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  • 15. 

    An insect's cuticle is primarily made of ____________, which has also been studied for its medicinal properties.

    • Chitin

    • Melatonin

    • Hemolymph

    • Melanin

    Correct Answer
    A. Chitin
    Explanation
    An insect's cuticle is primarily made of chitin, a substance that has also been studied for its medicinal properties. Chitin is a tough, flexible, and waterproof polysaccharide that provides structural support and protection to the insect's body. It is also found in the exoskeletons of other arthropods, such as crustaceans and spiders. In addition to its structural role, chitin has been investigated for its potential use in wound healing, drug delivery systems, and as an antimicrobial agent due to its biocompatibility and biodegradability.

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  • 16. 

    The followings are the parts of the insect thorax:

    • Mesothorax, metathorax and semithorax

    • Metathorax, mesothorax and prothorax

    • Pirothorax, hexathorax and etathorax

    • Prothorax, mesothorax and entothorax

    Correct Answer
    A. Metathorax, mesothorax and prothorax
    Explanation
    The insect thorax is divided into three parts: the prothorax, mesothorax, and metathorax. The prothorax is the anterior part of the thorax and is responsible for the attachment of the first pair of legs. The mesothorax is the middle part of the thorax and is associated with the attachment of the second pair of legs and the first pair of wings. The metathorax is the posterior part of the thorax and is responsible for the attachment of the third pair of legs and the second pair of wings. Therefore, the correct answer is metathorax, mesothorax, and prothorax.

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  • 17. 

    If you wanted to study entomology in college, what types of courses might you take at a university offering an undergraduate or graduate degree in entomology?

    • Aquatic Entomology

    • Urban Entomology

    • Insect Ecology

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    If you wanted to study entomology in college, you would likely take courses in Aquatic Entomology, Urban Entomology, and Insect Ecology. Aquatic Entomology would focus on the study of insects that live in or around water habitats, while Urban Entomology would cover insects that are commonly found in urban environments. Insect Ecology would delve into the relationships between insects and their environment, including their behavior, interactions, and impact on ecosystems. Taking all of these courses would provide a comprehensive understanding of entomology and its various subfields.

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  • 18. 

    The blood of insects is called _______________.

    • Hemoglobin

    • Hemolymph

    • Sebum

    • Hemocyanin

    Correct Answer
    A. Hemolymph
    Explanation
    Hemolymph is the correct answer because it is the term used to describe the blood of insects. Unlike vertebrates, insects do not have hemoglobin in their blood, which is why the options of hemoglobin and hemocyanin are incorrect. Sebum, on the other hand, is an oily substance produced by the skin, not related to insect blood.

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  • 19. 

    In many insects, three light-sensitive ô€‚³simpleô€‚´ô€€ƒeyes, or ____, are situated of the anterior vertex between the compound eyes.

    • Ocelli

    • Oligopod

    • Ostium

    • Obtect

    Correct Answer
    A. Ocelli
    Explanation
    In many insects, three light-sensitive "simple" eyes, or ocelli, are situated on the anterior vertex between the compound eyes. Ocelli are distinct from the compound eyes and are typically smaller and simpler in structure. They are used to detect changes in light intensity and direction, allowing insects to orient themselves and respond to environmental cues.

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  • 20. 

    Insects have _________ pair of legs and _________primary body regions.

    • 6,2

    • 3,2

    • 4,2

    • 3,3

    Correct Answer
    A. 3,3
  • 21. 

    How many abdominal segments are found in a typical insect?

    • More than 15

    • Less than 5

    • 12 or 13

    • 6 to 11

    Correct Answer
    A. 6 to 11
    Explanation
    In a typical insect, the number of abdominal segments can range from 6 to 11. This variation in the number of segments is due to the diverse nature of insect species. While some insects may have fewer abdominal segments, others may have more. Therefore, the correct answer is 6 to 11.

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  • 22. 

    ________ is the appropriate concentration of ethanol to preserve most insects.

    • 60%

    • 70%

    • 100%

    • 50%

    Correct Answer
    A. 70%
    Explanation
    70% ethanol is the appropriate concentration to preserve most insects. This is because ethanol acts as a preservative by dehydrating the insects and inhibiting the growth of microorganisms that can cause decay. A concentration of 70% is considered ideal because it provides a balance between preserving the insect's structure and preventing microbial growth. Higher concentrations of ethanol can cause excessive dehydration and shrinkage of the insect, while lower concentrations may not effectively inhibit microbial growth. Therefore, 70% ethanol is the most suitable concentration for preserving insects.

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  • 23. 

    A/an ______________ is used by female insects to lay eggs.

    • Spermatheca

    • Ovum

    • Cerci

    • Ovipositor

    Correct Answer
    A. Ovipositor
    Explanation
    The correct answer is ovipositor. An ovipositor is a specialized organ found in female insects that is used to lay eggs. It is a long, tubular structure that is capable of piercing through various materials, such as plant tissues or soil, to deposit the eggs in a suitable location. The ovipositor is an essential reproductive structure for female insects, allowing them to ensure the survival and propagation of their offspring.

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  • 24. 

    ______________ belong to the order Hymenoptera.

    • Grasshoppers and crickets

    • Beetles and weevils

    • Wasps and ants

    • Flies and mosquitos

    Correct Answer
    A. Wasps and ants
    Explanation
    Wasps and ants belong to the order Hymenoptera. This order includes insects that have membranous wings and a specialized structure called a "hymenopteran waist." Wasps and ants are both social insects that live in colonies and exhibit complex behaviors. They play important roles in ecosystems as predators, pollinators, and decomposers.

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  • 25. 

    Most digestion in insects occurs in the:

    • Hindgut

    • Foregut

    • Crop

    • Midgut

    Correct Answer
    A. Midgut
    Explanation
    The midgut is the correct answer because it is responsible for most of the digestion in insects. It is the portion of the digestive system where enzymes are secreted to break down food into smaller molecules that can be absorbed by the insect's body. The midgut is well-adapted for digestion, with a large surface area and specialized cells that facilitate the absorption of nutrients. The foregut and hindgut also play roles in digestion, but the majority of the process occurs in the midgut. The crop, on the other hand, is primarily involved in storing food.

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  • 26. 

    The majority of honey bees in a colony are females and called ____________.

    • Alates

    • Workers

    • Queens

    • Drones

    Correct Answer
    A. Workers
    Explanation
    The majority of honey bees in a colony are females and called workers. Workers are the female bees that perform various tasks within the colony, such as gathering nectar and pollen, building and maintaining the hive, and caring for the brood. They are responsible for the day-to-day functioning of the colony and play a crucial role in its survival and productivity.

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  • 27. 

    Which insect order contains the crickets and grasshoppers?

    • Lepidoptera

    • Orthoptera

    • Hymenoptera

    • Blattodea

    Correct Answer
    A. Orthoptera
    Explanation
    The correct answer is Orthoptera. Orthoptera is the insect order that contains crickets and grasshoppers. This order is characterized by insects with straight wings and strong hind legs adapted for jumping. Crickets and grasshoppers are known for their ability to produce loud chirping sounds by rubbing their wings or legs together. They are herbivorous insects that are found in various habitats worldwide.

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  • 28. 

    The developmental stage of an insect between molts is called a/an ______________.

    • Instar

    • Morph

    • Cocoon

    • Larva

    Correct Answer
    A. Instar
    Explanation
    The developmental stage of an insect between molts is called an instar. During this stage, the insect undergoes growth and development before shedding its exoskeleton and moving on to the next instar. Each instar represents a distinct phase in the insect's life cycle, characterized by specific physical characteristics and behaviors. This term is commonly used in entomology to describe the various stages of insect development.

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  • 29. 

    Predaceous diving beetles belong to what insect order?

    • Dermaptera

    • Diptera

    • Siphonaptera

    • Coleoptera

    Correct Answer
    A. Coleoptera
    Explanation
    Predaceous diving beetles belong to the insect order Coleoptera. Coleoptera is the largest order of insects, commonly known as beetles. These beetles have hardened forewings called elytra, which protect their delicate hindwings and body. Predaceous diving beetles are aquatic insects that are well adapted for life in water. They have specialized legs and antennae for swimming and capturing prey. Being in the order Coleoptera, these beetles share common characteristics with other beetles, such as chewing mouthparts and complete metamorphosis.

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  • 30. 

    A hearing organ of an insect is the ______________.

    • Labrum

    • Tympanum

    • Vertex

    • Frons

    Correct Answer
    A. Tympanum
    Explanation
    The correct answer is "tympanum" because it is a well-known fact that insects have a hearing organ called the tympanum. The tympanum is a thin, membrane-like structure that is usually found on the sides of an insect's body, particularly on the abdomen or thorax. It functions similarly to the eardrum in humans, vibrating in response to sound waves and allowing the insect to perceive sounds in its environment. This sensory organ is crucial for many insects, as it helps them detect predators, communicate with others of their species, and locate potential mates.

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  • 31. 

    Very few insects are found in this habitat.

    • Trees

    • Lakes

    • Ocean

    • Soil

    Correct Answer
    A. Ocean
    Explanation
    The correct answer is ocean because insects are mainly terrestrial organisms and require land-based habitats to survive. The ocean is a vast body of water and does not provide the necessary conditions for insects to live and thrive. Insects are more commonly found in habitats such as trees, soil, and lakes, which offer the necessary resources and environment for their survival.

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  • 32. 

    During the _________, German cockroaches are very active.

    • Spring

    • Summer

    • Day

    • Night

    Correct Answer
    A. Night
    Explanation
    German cockroaches are very active during the night because they are nocturnal insects. They have adapted to be more active in low light conditions and are more likely to forage for food and mate during the night. This behavior helps them avoid predators and take advantage of the darkness to find food and shelter more easily.

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  • 33. 

    The plague, or "black death," is a disease of rodents and is transmitted by the ________.

    • Human body louse

    • Oriental rat fleas

    • Western tarnished plant bug

    • Asian lady beetle

    Correct Answer
    A. Oriental rat fleas
    Explanation
    The correct answer is oriental rat fleas. The plague, also known as the "black death," is a disease that primarily affects rodents and is transmitted to humans through the bites of infected fleas. Oriental rat fleas, specifically, are known to carry and transmit the bacteria responsible for causing the plague. These fleas typically infest rats and other small mammals, and when they bite an infected animal, they can subsequently bite humans and transmit the disease.

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  • 34. 

    Which of the following arthropods are not insects?

    • All of these are not insects

    • Daddy long leg

    • Isopod

    • Tardigrade

    Correct Answer
    A. All of these are not insects
    Explanation
    The answer "all of these are not insects" is correct because daddy long leg, isopod, and tardigrade are all arthropods that do not belong to the insect class. Daddy long legs are actually arachnids, isopods are crustaceans, and tardigrades are microorganisms known as water bears. Insects belong to the class Insecta, which these three arthropods do not fall under. Therefore, all of the given options are examples of arthropods that are not insects.

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  • 35. 

    What is the visible characteristic that can be used to separate male and female mosquito adults?

    • Females have smaller compound eyes

    • Elongated mouthparts in males, shorter in females

    • Hairy legs in male, females without hairy legs

    • Males generally with plumose antennae, females with only a few short hairs

    Correct Answer
    A. Males generally with plumose antennae, females with only a few short hairs
    Explanation
    Male and female mosquitoes can be distinguished by their antennae and the presence of hairs. Males typically have plumose antennae, which are feathery and have multiple branches. On the other hand, females have antennae with only a few short hairs. This difference in antennae structure allows for the separation of male and female mosquitoes.

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  • 36. 

    Which part of the leg lies between the femur and the tarsus?

    • Trochanter

    • Tibia

    • Coxa

    • Arolium

    Correct Answer
    A. Tibia
    Explanation
    The tibia is the correct answer because it is the bone that lies between the femur and the tarsus in the leg. The femur is the thigh bone, and the tarsus is the group of seven bones in the ankle and foot. The tibia is the second largest bone in the body and forms the shin bone. It is located on the medial side of the leg and is responsible for bearing most of the body's weight during standing and walking.

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  • 37. 

    What is the mouthpart called for feeding within the Lepidoptera?

    • Pylorus

    • Pronotum

    • Proboscis

    • Paranota

    Correct Answer
    A. Proboscis
    Explanation
    The mouthpart used for feeding within the Lepidoptera is called a proboscis. The proboscis is a long, tubular structure that is used by butterflies and moths to suck nectar from flowers. It is formed by the elongation of the maxillae and labium, and is coiled up when not in use. The proboscis allows Lepidoptera to access the nectar deep within flowers, providing them with a source of energy.

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  • 38. 

    If an insect's subesophageal ganglion were paralyzed, it would be unable to _________.

    • Eat

    • Fly

    • Walk

    • See

    Correct Answer
    A. Eat
    Explanation
    If an insect's subesophageal ganglion were paralyzed, it would be unable to eat. The subesophageal ganglion is a part of the insect's nervous system that controls the muscles responsible for feeding and swallowing. If it is paralyzed, the insect would not be able to move its mouthparts or chew food, therefore preventing it from eating.

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  • 39. 

    The following are groups of eusocial insects:

    • Termites

    • Gall-forming aphids

    • All of these are eusocial insects

    • Ants

    Correct Answer
    A. All of these are eusocial insects
    Explanation
    All of the listed insects (termites, gall-forming aphids, and ants) are considered eusocial insects. Eusocial insects are characterized by living in large colonies with a division of labor, overlapping generations, and cooperative care of young. These insects exhibit complex social behaviors, such as communication, cooperation, and coordinated foraging, which contribute to the success and survival of the colony as a whole.

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  • 40. 

    Firebrats and silverfish are common household pests in the order __________.

    • Mecoptera

    • Odonata

    • Thysanura

    • Hemiptera

    Correct Answer
    A. Thysanura
    Explanation
    Firebrats and silverfish are common household pests that belong to the order Thysanura. Thysanura is a primitive order of insects that are characterized by their long, slender bodies and three long tail-like appendages at the end. These insects are commonly found in dark and damp areas such as basements, kitchens, and bathrooms. They are known for their ability to feed on a variety of organic materials, including paper, glue, and starches. Firebrats and silverfish are considered pests because they can damage books, clothing, and other household items.

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  • 41. 

    Malaria was eradicated in the U.S. in the mid 20th century in part because of the widespread use of _________.

    • Sevin

    • DDT

    • Deet

    • Malathion

    Correct Answer
    A. DDT
    Explanation
    DDT is the correct answer because it was widely used in the mid 20th century to control malaria-carrying mosquitoes. DDT is an insecticide that effectively kills mosquitoes and was instrumental in reducing the spread of malaria in the United States. Its use helped to eliminate the disease by targeting and eliminating the vector responsible for transmitting malaria. However, DDT has since been banned due to its harmful effects on the environment and human health.

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  • 42. 

    The "powder" left over from being in contact with moths or butterflies is actually tiny __________.

    • Wax crystals

    • Scales

    • Filaments

    • Trichomes

    Correct Answer
    A. Scales
    Explanation
    When moths or butterflies come into contact with surfaces, the powdery substance left behind is actually made up of tiny scales. These scales are small, flat structures that cover the wings and bodies of these insects. They are responsible for giving the wings their vibrant colors and patterns. When the scales rub off, they create the powdery residue that is commonly seen.

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  • 43. 

    What order of insects usually have their wings covered in flattened setae or scales?

    • Coleoptera

    • Lepidoptera

    • Diptera

    • Hemiptera

    Correct Answer
    A. Lepidoptera
    Explanation
    Lepidoptera is the correct answer because this order of insects, which includes butterflies and moths, usually have their wings covered in flattened setae or scales. These scales give their wings a powdery appearance and help with flight, insulation, and camouflage.

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  • 44. 

    Digging legs of mole crickets are what functional type?

    • Raptorial

    • Fossorial

    • Cursorial

    • Saltatorial

    Correct Answer
    A. Fossorial
    Explanation
    Mole crickets have digging legs, which are adapted for burrowing and living underground. This functional type of legs is known as fossorial. Fossorial animals are specialized for digging and excavating, allowing them to create tunnels and burrows in the soil. Mole crickets use their strong, spade-like legs to dig and navigate through the ground, making fossorial the correct functional type for their legs.

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  • 45. 

    The ____ are structures of the insect head that are responsible for grinding solid food.

    • Mandibles

    • Labrum

    • Calyx

    • Maxilla

    Correct Answer
    A. Mandibles
    Explanation
    The mandibles are structures of the insect head that are responsible for grinding solid food. They are the jaws of the insect and are located on either side of the mouth. The mandibles have a strong, chitinous structure that allows them to crush and grind food into smaller particles, making it easier to digest. Insects use their mandibles to tear apart food and manipulate it within their mouths before swallowing. They are essential for the insect's feeding process and play a crucial role in obtaining nutrients from solid food sources.

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  • 46. 

    Dichotomous keys are primarily based on differences and similarities in insect ____________.

    • Pest status

    • Morphology

    • Behavior

    • Physiology

    Correct Answer
    A. Morphology
    Explanation
    Dichotomous keys are primarily based on differences and similarities in insect morphology. Morphology refers to the physical characteristics and structures of an organism, such as its shape, size, color, and other external features. By examining these morphological traits, dichotomous keys allow users to identify and classify insects based on their distinct characteristics. Pest status, behavior, and physiology may also be important factors in understanding insects, but they are not the primary basis for dichotomous keys.

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  • 47. 

    Which structure is not part of an insect's antenna?

    • Scape

    • Pedicel

    • Flagellum

    • Coxa

    Correct Answer
    A. Coxa
    Explanation
    The coxa is not part of an insect's antenna. The coxa is actually a segment of an insect's leg, specifically the basal segment that attaches the leg to the body. In contrast, the scape, pedicel, and flagellum are all parts of an insect's antenna. The scape is the first segment closest to the head, the pedicel is the second segment, and the flagellum is the elongated, segmented portion of the antenna.

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  • 48. 

    Some factors contributing to the success of insects are:

    • Size, a protective cuticle, an efficient nervous system, four pair of legs

    • High reproductive rate, the evolution of flight, size

    • High reproductive rate, the evolution of flight, ability to live without a brain

    • Size, the evolution of flight, lack of wings

    Correct Answer
    A. High reproductive rate, the evolution of flight, size
    Explanation
    Insects have a high reproductive rate, meaning they can produce a large number of offspring in a short period of time. This allows them to quickly populate an area and adapt to changing environments. The evolution of flight has also been a significant factor in their success. Flight enables insects to easily find food, mates, and new habitats, increasing their chances of survival and colonization. Additionally, their small size allows them to exploit a wide range of resources and habitats, giving them a competitive advantage over larger organisms.

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  • 49. 

    _________ represents the most speciose order of insects, with approximately __________ species

    • Collembola, 450,000

    • Zoraptera, 500,000

    • Lepidoptera, 350,000

    • Coleoptera, 400,000

    Correct Answer
    A. Coleoptera, 400,000
    Explanation
    Coleoptera represents the most speciose order of insects, with approximately 400,000 species.

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Quiz Review Timeline (Updated): May 12, 2025 +

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  • Current Version
  • May 12, 2025
    Quiz Edited by
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  • Jan 20, 2017
    Quiz Created by
    Savannah Rubio

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