Arthropoda MCQ with Answers Pdf
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Arthropoda MCQ with Answers Pdf
1. Glow worm is_______
(a) Annelid
(b) Insect
(c) Helminthes
(d) Mollusca
Answer: (b) Insect
Explanation: Glow worms are bioluminescent insects, mostly belonging to the beetle family Lampyridae.
Read: MCQ on Phylum Chordata
2. Which thing is common in leech, mosquito, bed bug and rat?
(a) All have anticoagulant
(b) All have nucleus
(c) All have no cellular membrane
(d) All have a sexual phase
Answer: (d) All have a sexual phase
Explanation: All listed organisms reproduce sexually, though they belong to different phyla.
Read: MCQ on Phylum Porifera
3. A moth is closely related to__________
(a) Butterfly
(b) Beetle
(c) Cricket
(d) Wasp
Answer: (a) Butterfly
Explanation: Moths and butterflies both belong to the order Lepidoptera and have similar developmental stages.
Read:Phylum Annelida MCQ Question
4. The biggest phylum in regard to the number of species is__________
(a) Arthropods
(b) Platyhelminthes
(c) Chordate
(d) Protozoa
Answer: (a) Arthropods
Explanation: Arthropoda is the largest phylum, comprising insects, arachnids, crustaceans, etc., with the most known species.
Read: MCQ on Phylum Coelenterata
5. Which one of the following belongs to phylum arthropods?
(a) Octopus
(b) Termite
(c) Nereis
(d) Leech
Answer: (b) Termite
Explanation: Termites are insects and hence belong to the phylum Arthropoda, unlike others listed.
Read: MCQ on Phylum Platyhelminthes
6. Complete metamorphosis is observed in__________
(a) Silver Fish
(b) Gypsy Moth
(c) Bed Bug
(d) Grasshopper
Answer: (b) Gypsy Moth
Explanation: Gypsy moth undergoes egg → larva → pupa → adult stages, a complete metamorphosis.
7. An insect without pupa stage is_______
(a) Mosquito
(b) Bed Bug
(c) Silk Moth
(d) Butterfly
Answer: (b) Bed Bug
Explanation: Bed bugs undergo incomplete metamorphosis: egg → nymph → adult, without a pupal stage.
8. In insect, oxygen is carried to different tissues by____________
(a) Diffusion through surface
(b) Tracheal tubes
(c) Respiratory pigment through blood
(d) Gills
Answer: (b) Tracheal tubes
Explanation: Insects breathe through a network of tracheal tubes that directly supply oxygen to tissues.
9. Anal cerci occur in__________
(a) Both male and female cockroaches
(b) Male Cockroach
(c) Female Cockroach
(d) Female Ascaris
Answer: (a) Both male and female cockroaches
Explanation: Anal cerci are paired appendages at the posterior end found in both sexes of cockroaches.
10. Filariasis, Wuchereria and elephantiasis diseases are transmitted by___________
(a) House fly
(b) Culex
(c) Aedes
(d) Anopheles
Answer: (b) Culex
Explanation: Culex mosquitoes are vectors for filarial worms like Wuchereria bancrofti, which cause elephantiasis.
11. The smallest basic unit of a compound eye in cockroach and insects is known as_________
(a) Corneal facet
(b) Rhabdome
(c) Retina
(d) Ommatidium
Answer: (d) Ommatidium
Explanation: A compound eye is made up of multiple ommatidia, each functioning as a separate visual unit.
12. Compound eyes in insects produce the image_________
(a) Apposition
(b) Superposition
(c) Both
(d) None
Answer: (c) Both
Explanation: Insects may have either apposition or superposition image formation depending on their habitat and activity.
13. The period in between two moults in insect is termed as___________
(a) Incubation
(b) Instar
(c) Stadium
(d) Ecdysis
Answer: (c) Stadium
Explanation: Stadium refers to the period between two successive molts in insect development.
14. Which one is a colonial insect?
(a) Housefly
(b) Termite
(c) Mosquito
(d) Bed bug
Answer: (b) Termite
Explanation: Termites live in large colonies with a division of labor and a caste system.
15. A housefly undergoes metamorphosis in the following order________
(a) Egg, pupa, larva, adult
(b) Egg, larva, nymph, adult
(c) Egg, larva, pupa, imago, adult
(d) Egg, nymph, pupa, adult
Answer: (c) Egg, larva, pupa, imago, adult
Explanation: Houseflies undergo complete metamorphosis, including the imago (emerging adult) stage.
16. Which set of insects is useful to man?
(a) Honey bee, locust, lac insect
(b) Silk moth, honey bee, dragon fly, locust
(c) Lac insect, silk moth, honey bee, cochineal insect
(d) Rice-weevil, silk moth, honey bee
Answer: (c) Lac insect, silk moth, honey bee, cochineal insect
Explanation: These insects are economically important for products like silk, honey, lac, and dye.
17. Yellow fever is transmitted by___________
(a) Culex
(b) Aedes
(c) House fly
(d) Anopheles
Answer: (b) Aedes
Explanation: Aedes aegypti is the primary vector for yellow fever, dengue, and Zika viruses.
18. The ants make their path in a definite direction in a perfect manner of curves. It is due to sense of__________
(a) Vision
(b) Smell
(c) Touch
(d) Intelligence
Answer: (b) Smell
Explanation: Ants follow pheromone trails left by other ants using their strong olfactory sense.
19. The damage to the sugarcane crop is mainly caused by_________
(a) Locusts
(b) Pyrilla
(c) Termites
(d) Aphids
Answer: (b) Pyrilla
Explanation: Pyrilla is a sap-sucking insect that significantly damages sugarcane crops.
20. The spider makes the web with the help of a fluid which comes out from the_________
(a) Mouth
(b) Legs
(c) Abdominal glands
(d) Salivary glands
Answer: (c) Abdominal glands
Explanation: Spiders produce silk from specialized spinnerets located in their abdominal region.
21. Insects are active because_______
(a) They are small
(b) They have open vasculation
(c) They have developed respiratory organs
(d) They are adapted for flight
Answer: (c) They have developed respiratory organs
Explanation: Insects have a highly efficient tracheal respiratory system that allows direct oxygen delivery to tissues, supporting high activity.
22. Which structure of man is similar to the spiracle of Cockroach?
(a) Nostril
(b) Bronchiole
(c) Lungs
(d) Alveoli
Answer: (a) Nostril
Explanation: Spiracles in insects and nostrils in humans both serve as entry points for air into the respiratory system.
23. Which among the following is not an oviparous arthropod?
(a) Beetles
(b) Centipedes
(c) Scorpion
(d) Prawns
Answer: (c) Scorpion
Explanation: Scorpions are viviparous arthropods, giving birth to live young, unlike other listed oviparous ones.
24. Tubular heart of cockroach has how many chambers_________
(a) 10
(b) 13
(c) 12
(d) 1
Answer: (b) 13
Explanation: The dorsal tubular heart of a cockroach consists of 13 chambers, each opening into the next via valves.
25. Maximum number of economically important species are in the class__________
(a) Chilopoda
(b) Insecta
(c) Diplopoda
(d) Crustacea
Answer: (b) Insecta
Explanation: The class Insecta includes bees, silkworms, lac insects, etc., which are highly economically significant.
26. The common characters found in centipede, cockroach and crab are__________
(a) Green gland and tracheae
(b) Book lungs and antennae
(c) Compound eyes and anal cerci
(d) Jointed legs and chitinous exoskeleton
Answer: (d) Jointed legs and chitinous exoskeleton
Explanation: All three belong to phylum Arthropoda, characterized by segmented bodies, jointed appendages, and a chitinous exoskeleton.
27. Which one of the following has an open circulatory system?
(a) Hirudinaria
(b) Octopus
(c) Pheretima
(d) Periplaneta
Answer: (d) Periplaneta
Explanation: Periplaneta (cockroach) has an open circulatory system where blood bathes the organs directly in the body cavity.
28. Respiration pigment of blood in cockroach is_________
(a) Haemozoine
(b) Haemocyanin
(c) Haemoglobin
(d) Absent
Answer: (d) Absent
Explanation: Cockroach blood is colorless and lacks respiratory pigments; oxygen is transported through the tracheal system.
29. Book lungs are the respiratory organs in_________
(a) Protozoans
(b) Cnidarians
(c) Arthropodes
(d) Amphibians
Answer: (c) Arthropodes
Explanation: Book lungs are found in arachnids (a class of Arthropoda), such as spiders and scorpions.
30. The taste receptors of cockroach are________
(a) Compound eyes
(b) Campaniform sensillae
(c) Palps of maxillary and labium
(d) Tactile hairs
Answer: (c) Palps of maxillary and labium
Explanation: Taste receptors in cockroach are located on the maxillary and labial palps, which help in sensing food.
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