- Which of the following characteristics is unique to Arthropoda?
- A) Radial symmetry
- B) Exoskeleton made of chitin
- C) Segmentation
- D) Closed circulatory system
Answer: B) Exoskeleton made of chitin
- What type of body cavity do arthropods possess?
- A) Acoelomate
- B) Pseudocoelomate
- C) Coelomate
- D) Hemocoelomate
Answer: C) Coelomate
- Which of the following is NOT a class within the phylum Arthropoda?
- A) Insecta
- B) Arachnida
- C) Mollusca
- D) Crustacea
Answer: C) Mollusca
- What is the primary function of the arthropod exoskeleton?
- A) Respiration
- B) Locomotion
- C) Protection and support
- D) Digestion
Answer: C) Protection and support
- Which of the following arthropods undergoes metamorphosis?
- A) Crayfish
- B) Grasshopper
- C) Scorpion
- D) Spider
Answer: B) Grasshopper
- The jointed appendages of arthropods are primarily used for:
- A) Respiration
- B) Locomotion
- C) Sensation
- D) All of the above
Answer: D) All of the above
- Which class of arthropods is characterized by having four pairs of legs?
- A) Insecta
- B) Myriapoda
- C) Arachnida
- D) Crustacea
Answer: C) Arachnida
- In which class would you find organisms such as centipedes and millipedes?
- A) Crustacea
- B) Myriapoda
- C) Insecta
- D) Arachnida
Answer: B) Myriapoda
- Which of the following is the largest class within the phylum Arthropoda?
- A) Arachnida
- B) Crustacea
- C) Myriapoda
- D) Insecta
Answer: D) Insecta
- The respiratory structures in insects are called:
- A) Gills
- B) Book lungs
- C) Tracheae
- D) Spiracles
Answer: C) Tracheae
- Which of the following arthropods has a two-part body plan?
- A) Grasshopper
- B) Spider
- C) Crayfish
- D) Butterfly
Answer: C) Crayfish
- The development of arthropods is typically:
- A) Direct
- B) Indirect with a larval stage
- C) Through metamorphosis
- D) Both B and C
Answer: D) Both B and C
- What is the primary feeding structure of crustaceans?
- A) Mandibles
- B) Chelicerae
- C) Maxillae
- D) Pedipalps
Answer: A) Mandibles
- Which of the following arthropods is known for its ability to produce silk?
- A) Ant
- B) Spider
- C) Butterfly
- D) Beetle
Answer: B) Spider
- What is the term for the process of shedding the exoskeleton in arthropods?
- A) Metamorphosis
- B) Ecdysis
- C) Regeneration
- D) Fission
Answer: B) Ecdysis
- Which of the following structures is involved in the sensory perception of arthropods?
- A) Compound eyes
- B) Gills
- C) Antennae
- D) Both A and C
Answer: D) Both A and C
- The circulatory system of arthropods is primarily:
- A) Closed
- B) Open
- C) Lacking
- D) None of the above
Answer: B) Open
- Which of the following is NOT a method of locomotion in arthropods?
- A) Walking
- B) Flying
- C) Swimming
- D) Crawling
Answer: D) Crawling
- Which class of arthropods is characterized by having two pairs of antennae?
- A) Arachnida
- B) Insecta
- C) Crustacea
- D) Myriapoda
Answer: C) Crustacea
- Which of the following is a major ecological role of arthropods?
- A) Pollinators
- B) Decomposers
- C) Prey for other animals
- D) All of the above
Answer: D) All of the above
- What is the main advantage of an exoskeleton for arthropods?
- A) Increased mobility
- B) Enhanced respiration
- C) Protection from predators
- D) Improved sensory perception
Answer: C) Protection from predators
- Which of the following arthropods is known for its complex social structure?
- A) Butterfly
- B) Ant
- C) Scorpion
- D) Crab
Answer: B) Ant
- What type of eyes do most insects have?
- A) Simple eyes
- B) Compound eyes
- C) Ocelli
- D) Both B and C
Answer: D) Both B and C
- Which of the following groups of arthropods includes the horseshoe crab?
- A) Insecta
- B) Myriapoda
- C) Chelicerata
- D) Crustacea
Answer: C) Chelicerata
- How do aquatic arthropods typically breathe?
- A) Through lungs
- B) Through skin
- C) Through gills
- D) Through tracheae
Answer: C) Through gills
- In insects, the structure that connects the thorax and abdomen is known as the:
- A) Head
- B) Abdomen
- C) Petiole
- D) Thorax
Answer: C) Petiole
- What is the primary function of the malpighian tubules in arthropods?
- A) Respiration
- B) Digestion
- C) Excretion
- D) Circulation
Answer: C) Excretion
- Which of the following arthropods is an important bioindicator of environmental health?
- A) Grasshopper
- B) Dragonfly
- C) Cockroach
- D) Spider
Answer: B) Dragonfly
- What type of reproduction is common among many arthropods?
- A) Asexual reproduction
- B) Sexual reproduction
- C) Budding
- D) Parthenogenesis
Answer: B) Sexual reproduction
- Which of the following adaptations helps insects to survive in dry environments?
- A) Gills
- B) A waxy cuticle
- C) Spiracles
- D) Both B and C
Answer: D) Both B and C