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