A) Leg length B) Eye color C) Body shape D) Claw size
A) True crabs have more legs B) True crabs have a reduced abdomen tucked under the cephalothorax C) False crabs are larger D) False crabs live only in freshwater
A) Long and narrow B) Broad and flattened C) Round and bulbous D) Star-shaped
A) Prosoma B) Carapace C) Abdomen D) Cephalothorax
A) Uropods B) Pleopods C) Chelipeds D) Pereiopods
A) Five B) Three C) Six D) Four
A) Digging B) Reproduction C) Camouflage D) Swimming
A) By the shape of the abdominal flap B) By the color of the carapace C) By the size of the claws D) By the length of the legs
A) Male crab B) Hermaphrodite crab C) Juvenile crab D) Female crab
A) Immature crab B) Male crab C) Female crab D) Hybrid crab
A) Sensory perception B) Waste removal C) Food digestion D) Oxygen extraction
A) Externally, attached to the body B) On the abdomen C) Within the gill chambers beneath the carapace D) On the legs
A) Respiration B) Protection C) Locomotion D) Digestion
A) Brightly colored carapace B) Paddle-like swimming legs C) Large, symmetrical claws D) Long legs relative to their body size
A) Ghost crabs B) King crabs C) Hermit crabs D) Stone crabs
A) Hermit crab B) Fiddler crab C) Box crab D) Snow crab
A) Brightly colored walking legs B) The ability to climb trees C) A flattened, shovel-like carapace D) One greatly enlarged claw in males
A) Pea crab B) Coconut crab C) Mud crab D) Decorator crab
A) Ecdysis B) Regeneration C) Metamorphosis D) Osmoregulation
A) To shed parasites B) To change color C) To grow larger D) To reproduce
A) A misnomer, they are more closely related to spiders and scorpions. B) They were once classified as crabs but have since been reclassified. C) An accurate descriptor, it's a type of crab. D) A regional term for a certain type of true crab
A) Claw shape B) Carapace ornamentation C) Leg structure D) Internal organ structure
A) Branchial ridges B) Rostral spines C) Epipods D) Marginal setae
A) Omnivorous B) Carnivorous C) Herbivorous D) Detritivorous
A) Specialized lungs B) Ability to absorb oxygen through their skin C) Waterproof carapace D) Modified gill chambers
A) Swimming B) Sensing vibrations C) Feeding D) Defense
A) Spider crabs B) King crabs C) Hermit crabs D) Shore crabs
A) Zoea B) Megalopa C) Cyprid D) Nauplius
A) Dungeness crab B) Snow crab C) Blue crab D) Red king crab
A) Only through tactile signals B) Primarily through vocalizations C) Through visual and chemical signals D) They don't communicate |