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