- What is the primary characteristic of Amphibia?
- A) They are fully aquatic.
- B) They have a dry skin.
- C) They undergo metamorphosis.
- D) They have feathers.
Answer: C) They undergo metamorphosis.
- Which of the following is a subclass of Amphibia?
- A) Anura
- B) Reptilia
- C) Actinopterygii
- D) Chondrichthyes
Answer: A) Anura
- What type of skin do amphibians have?
- A) Scaly
- B) Smooth and moist
- C) Feathery
- D) Bumpy and dry
Answer: B) Smooth and moist
- Which of the following animals is NOT an amphibian?
- A) Frog
- B) Salamander
- C) Toad
- D) Lizard
Answer: D) Lizard
- What is the primary mode of respiration in adult amphibians?
- A) Gills
- B) Lungs
- C) Skin
- D) Both B and C
Answer: D) Both B and C
- Which life stage of amphibians typically has gills?
- A) Adult
- B) Egg
- C) Larva
- D) None
Answer: C) Larva
- What type of reproduction do most amphibians exhibit?
- A) Asexual
- B) External fertilization
- C) Internal fertilization
- D) Budding
Answer: B) External fertilization
- What is the main purpose of the amphibian’s moist skin?
- A) To provide insulation
- B) To facilitate respiration
- C) To protect against predators
- D) To absorb sunlight
Answer: B) To facilitate respiration
- Which of the following groups is included in the class Amphibia?
- A) Fish
- B) Reptiles
- C) Frogs
- D) Birds
Answer: C) Frogs
- What type of habitat do most amphibians prefer?
- A) Dry deserts
- B) Aquatic and semi-aquatic environments
- C) High altitudes
- D) Cold climates
Answer: B) Aquatic and semi-aquatic environments
- What is the common name for the order Anura?
- A) Salamanders
- B) Frogs and toads
- C) Caecilians
- D) Lizards
Answer: B) Frogs and toads
- What is a major threat to amphibian populations worldwide?
- A) Climate change
- B) Overfishing
- C) Habitat destruction
- D) Both A and C
Answer: D) Both A and C
- Which of the following structures helps amphibians with balance while swimming?
- A) Fins
- B) Webbed feet
- C) Tail
- D) All of the above
Answer: B) Webbed feet
- Which of the following amphibians is known for its ability to regenerate limbs?
- A) Frog
- B) Salamander
- C) Toad
- D) Caecilian
Answer: B) Salamander
- What is the role of the tympanic membrane in amphibians?
- A) Respiration
- B) Hearing
- C) Balance
- D) Digestion
Answer: B) Hearing
- Which of the following statements is true about amphibians?
- A) They are exclusively terrestrial.
- B) They do not have a larval stage.
- C) They can absorb water through their skin.
- D) They have no predators.
Answer: C) They can absorb water through their skin.
- How do amphibians typically communicate?
- A) Through visual displays
- B) Through vocalizations
- C) Through chemical signals
- D) All of the above
Answer: D) All of the above
- Which order of amphibians is known for being limbless?
- A) Anura
- B) Urodela
- C) Apoda
- D) Amphibia
Answer: C) Apoda
- What adaptation helps amphibians avoid desiccation?
- A) Scales
- B) Moist skin
- C) Thick fur
- D) Feathers
Answer: B) Moist skin
- Which amphibian is known for its distinctive vocal calls during mating season?
- A) Toad
- B) Salamander
- C) Frog
- D) Caecilian
Answer: C) Frog
- What type of circulatory system do amphibians possess?
- A) Open circulatory system
- B) Closed circulatory system
- C) Semi-open circulatory system
- D) None of the above
Answer: B) Closed circulatory system
- Which of the following is a method of defense used by some amphibians?
- A) Camouflage
- B) Toxic secretions
- C) Aposematism
- D) All of the above
Answer: D) All of the above
- What is the typical diet of adult amphibians?
- A) Herbivorous
- B) Carnivorous
- C) Omnivorous
- D) Both B and C
Answer: D) Both B and C
- How do amphibians generally absorb moisture?
- A) Through their mouths
- B) Through their skin
- C) Through their lungs
- D) Through their eyes
Answer: B) Through their skin
- Which of the following amphibians is often used as a model organism in scientific research?
- A) Bullfrog
- B) Tiger salamander
- C) Axolotl
- D) Common toad
Answer: C) Axolotl
- What does the term “ectothermic” mean in relation to amphibians?
- A) They generate their own body heat.
- B) They depend on external sources of heat.
- C) They have a constant body temperature.
- D) They can survive in extreme temperatures.
Answer: B) They depend on external sources of heat.
- What environmental changes significantly impact amphibian populations?
- A) Pollution
- B) Climate change
- C) Habitat destruction
- D) All of the above
Answer: D) All of the above
- What is the primary function of the skin glands in amphibians?
- A) Production of hormones
- B) Secretion of mucus and toxins
- C) Photosynthesis
- D) Digestion
Answer: B) Secretion of mucus and toxins
- Which amphibian is famous for its ability to live both on land and in water?
- A) Frog
- B) Shark
- C) Salmon
- D) Alligator
Answer: A) Frog
- What is the primary purpose of the amphibian’s cloaca?
- A) Excretion
- B) Reproduction
- C) Both A and B
- D) Digestion
Answer: C) Both A and B