- What is the common name for members of the class Scaphopoda?
- A) Tusk shells
-
- B) Clams
- C) Chitons
- D) Sea slugs
Answer: A) Tusk shells
- What unique shape do Scaphopoda shells typically have?
- A) Spiral
- B) Conical
- C) Flat
- D) Oval
Answer: B) Conical
- What type of habitat do Scaphopoda primarily inhabit?
- A) Freshwater
- B) Terrestrial
- C) Marine
- D) Brackish water
Answer: C) Marine
- Scaphopods primarily feed on which type of organism?
- A) Plants
- B) Detritus
- C) Small fish
- D) Other mollusks
Answer: B) Detritus
- What structure do Scaphopoda use for feeding?
- A) Radula
- B) Tentacles
- C) Siphon
- D) Gills
Answer: A) Radula
- Which of the following is a key characteristic of Scaphopoda?
- A) Presence of gills
- B) Presence of a coiled shell
- C) Lack of a true shell
- D) Presence of a tubular shell
Answer: D) Presence of a tubular shell
- How do Scaphopoda respire?
- A) Through their skin
- B) Using gills
- C) Through a specialized respiratory structure
- D) Using their foot
Answer: A) Through their skin
- What is the primary mode of locomotion for Scaphopoda?
- A) Swimming
- B) Crawling
- C) Burrowing
- D) Floating
Answer: C) Burrowing
- What do Scaphopods use to anchor themselves in the sediment?
- A) Their foot
- B) Their tentacles
- C) Their shell
- D) Their siphon
Answer: A) Their foot
- Which of the following is a common genus of Scaphopoda?
- A) Dentalium
- B) Acanthochitona
- C) Mytilus
- D) Nautilus
Answer: A) Dentalium
- What is the main ecological role of Scaphopoda?
- A) Predators
- B) Herbivores
- C) Decomposers
- D) Parasites
Answer: C) Decomposers
- Which structure is primarily used for excretion in Scaphopoda?
- A) Nephridia
- B) Gills
- C) Mantle
- D) Foot
Answer: A) Nephridia
- How do Scaphopoda reproduce?
- A) Budding
- B) Asexual reproduction
- C) Sexual reproduction
- D) Fragmentation
Answer: C) Sexual reproduction
- What feature distinguishes Scaphopoda from other mollusks?
- A) A hard shell
- B) A soft body
- C) A tubular shell open at both ends
- D) A coiled shell
Answer: C) A tubular shell open at both ends
- Scaphopods are primarily found in which part of the ocean?
- A) Intertidal zone
- B) Deep sea
- C) Coastal waters
- D) Pelagic zone
Answer: B) Deep sea
- What is the primary diet of Scaphopoda?
- A) Coral
- B) Algae
- C) Plankton
- D) Detritus and microorganisms
Answer: D) Detritus and microorganisms
- Which of the following is a potential predator of Scaphopoda?
- A) Sea stars
- B) Crabs
- C) Fish
- D) All of the above
Answer: D) All of the above
- What is the reproductive strategy of many Scaphopoda?
- A) External fertilization
- B) Internal fertilization
- C) Asexual reproduction
- D) Budding
Answer: A) External fertilization
- Scaphopods lack which feature found in most other mollusks?
- A) A foot
- B) A shell
- C) A radula
- D) Gills
Answer: D) Gills
- What type of symmetry do Scaphopoda exhibit?
- A) Bilateral symmetry
- B) Radial symmetry
- C) Asymmetry
- D) None of the above
Answer: A) Bilateral symmetry
- The shell of Scaphopoda is primarily composed of what material?
- A) Calcium carbonate
- B) Chitin
- C) Silica
- D) Keratin
Answer: A) Calcium carbonate
- What is the function of the siphon in Scaphopoda?
- A) Digestion
- B) Respiration
- C) Excretion
- D) Feeding
Answer: D) Feeding
- Which of the following adaptations helps Scaphopoda survive in their environment?
- A) Camouflage
- B) Burrowing ability
- C) Ability to swim
- D) High reproductive rate
Answer: B) Burrowing ability
- The larval stage of Scaphopoda is called:
- A) Veliger
- B) Trochophore
- C) Nauplius
- D) Zoea
Answer: B) Trochophore
- Scaphopods are primarily classified under which phylum?
- A) Arthropoda
- B) Mollusca
- C) Annelida
- D) Echinodermata
Answer: B) Mollusca
- Which of the following characteristics is common among Scaphopoda?
- 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 Scaphopoda species?
- A) 1-5 cm
- B) 5-10 cm
- C) 10-20 cm
- D) 20-30 cm
Answer: A) 1-5 cm
- Scaphopods are generally characterized by having:
- A) A spiral shell
- B) A linear, tubular shell
- C) No shell
- D) A segmented body
Answer: B) A linear, tubular shell
- The ecological role of Scaphopoda includes:
- A) Predation
- B) Herbivory
- C) Nutrient cycling
- D) Parasitism
Answer: C) Nutrient cycling
- Which of the following adaptations helps Scaphopoda 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