- What is the common name for members of the class Monoplacophora?
- A) Limpets
- B) Tusk shells
- C) Chitons
- D) Neopilina Answer: D) Neopilina
- What type of shell do Monoplacophora typically possess?
- A) Coiled
- B) Conical
- C) Flat and cap-like
- D) Spiraled Answer: C) Flat and cap-like
- Which of the following is a characteristic feature of Monoplacophora?
- A) Segmentation
- B) Complex eyes
- C) A highly developed foot
- D) A soft body Answer: A) Segmentation
- Monoplacophora primarily inhabit which type of environment?
- A) Freshwater
- B) Terrestrial
- C) Marine
- D) Brackish water Answer: C) Marine
- What is the primary feeding mechanism of Monoplacophora?
- A) Filter feeding
- B) Predation
- C) Herbivory
- D) Detritivory Answer: A) Filter feeding
- What structure do Monoplacophora use for respiration?
- A) Gills
- B) Skin
- C) Mantle
- D) Foot Answer: A) Gills
- Which of the following is a common genus of Monoplacophora?
- A) Neopilina
- B) Dentalium
- C) Mytilus
- D) Nautilus Answer: A) Neopilina
- What type of symmetry do Monoplacophora exhibit?
- A) Bilateral symmetry
- B) Radial symmetry
- C) Asymmetry
- D) None of the above Answer: A) Bilateral symmetry
- What is the primary ecological role of Monoplacophora?
- A) Predators
- B) Herbivores
- C) Decomposers
- D) Parasites Answer: C) Decomposers
- Monoplacophora are most closely related to which other class of mollusks?
- A) Gastropoda
- B) Bivalvia
- C) Cephalopoda
- D) Polyplacophora Answer: D) Polyplacophora
- Which of the following structures is primarily used for excretion in Monoplacophora?
- A) Nephridia
- B) Gills
- C) Mantle
- D) Foot Answer: A) Nephridia
- How do Monoplacophora reproduce?
- A) Budding
- B) Asexual reproduction
- C) Sexual reproduction
- D) Fragmentation Answer: C) Sexual reproduction
- Which feature is notable about the nervous system of Monoplacophora?
- A) Highly developed
- B) Simplistic and decentralized
- C) Lacking any form of brain
- D) Very complex Answer: B) Simplistic and decentralized
- What is the main diet of Monoplacophora?
- A) Coral
- B) Algae and detritus
- C) Plankton
- D) Small fish Answer: B) Algae and detritus
- What type of circulatory system do Monoplacophora possess?
- A) Open circulatory system
- B) Closed circulatory system
- C) No circulatory system
- D) Hemocoel Answer: A) Open circulatory system
- Which of the following adaptations helps Monoplacophora survive in their environment?
- A) Camouflage
- B) Ability to burrow
- C) Protective shell
- D) Ability to swim Answer: C) Protective shell
- What is the larval stage of Monoplacophora called?
- A) Veliger
- B) Trochophore
- C) Nauplius
- D) Zoea Answer: B) Trochophore
- The shell of Monoplacophora is primarily composed of what material?
- A) Calcium carbonate
- B) Chitin
- C) Silica
- D) Keratin Answer: A) Calcium carbonate
- What do Monoplacophora use their foot for?
- A) Digestion
- B) Locomotion and anchoring
- C) Respiration
- D) Reproduction Answer: B) Locomotion and anchoring
- What kind of environment are Monoplacophora typically found in?
- A) Intertidal zones
- B) Deep sea
- C) Coral reefs
- D) Coastal waters Answer: B) Deep sea
- Monoplacophora are often considered to be:
- A) Primitive mollusks
- B) Highly evolved mollusks
- C) Parasites
- D) Decomposers Answer: A) Primitive mollusks
- Which of the following characteristics is common among Monoplacophora?
- A) They have a closed circulatory system
- B) They possess a radula
- C) They have complex eyes
- D) They are terrestrial Answer: B) They possess a radula
- What is the size range for most Monoplacophora species?
- A) 1-5 cm
- B) 5-10 cm
- C) 10-20 cm
- D) 20-30 cm Answer: A) 1-5 cm
- Which of the following is true about Monoplacophora’s habitat preferences?
- A) They prefer warm shallow waters
- B) They are exclusively freshwater species
- C) They live in deep oceanic environments
- D) They are only found on coral reefs Answer: C) They live in deep oceanic environments
- Which structure in Monoplacophora is primarily responsible for feeding?
- A) Foot
- B) Tentacles
- C) Radula
- D) Gills Answer: C) Radula
- What is the main reproductive strategy of Monoplacophora?
- A) External fertilization
- B) Internal fertilization
- C) Asexual reproduction
- D) Budding Answer: A) External fertilization
- Scavenging in Monoplacophora is primarily done by:
- A) Siphoning
- B) Crawling
- C) Filter feeding
- D) Both A and C Answer: D) Both A and C
- Monoplacophora are important for which aspect of the ecosystem?
- A) Nutrient cycling
- B) Coral growth
- C) Biodiversity
- D) Water purification Answer: A) Nutrient cycling
- The shell of Monoplacophora can be described as:
- A) Multi-chambered
- B) Smooth and shiny
- C) Flat and uncoiled
- D) Thick and heavy Answer: C) Flat and uncoiled
- Which of the following adaptations helps Monoplacophora in their detritivorous feeding?
- A) Long tentacles
- B) A complex digestive system
- C) A wide mouth
- D) A radula with scraping capabilities Answer: D) A radula with scraping capabilities